Sigma Software

Join Sigma Software as a Senior Test Engineer and help shape the quality of a cutting-edge social shopping platform that blends e-commerce with social networking. This role offers the opportunity to work on a high-impact product used by millions of fashion lovers worldwide.

You will be part of our Mobile & Web Solutions department, collaborating with talented professionals and applying the Quality Assistance model to ensure exceptional user experiences.

We at Sigma Software value innovation, teamwork, and professional growth. By joining us, you will gain access to diverse projects, supportive colleagues, and a culture that rewards initiative and expertise.
 

CUSTOMER
Global marketplace for fashion, combining e-commerce with social networking features. It enables users to sell customized or rare clothes and accessories, promoting sustainable consumption by recycling unwanted items for money.
 

PROJECT
The project is a social shopping platform where users create profile pages to post pictures and descriptions of items for sale, enhanced with hashtags for easier discovery. Focused on clothes retail, it aims to deliver an evocative buying and selling experience. Key tasks include payment system integration and accessibility feature implementation.
 

Responsibilities:

• Work as part of the product development team, collaborating closely with customer-side developers
• Follow and support the Quality Assistance process
• Plan and estimate testing activities
• Create and maintain test documentation
• Design and execute manual, snapshot, and UI tests for new features
• Perform Functional, Regression, and Compatibility testing across Web and Mobile platforms
• Conduct release validation, smoke testing, and post-deployment quality checks
• Provide clear and regular status and progress reports
• Collaborate with product owners, business analysts, and development teams to ensure product quality
• Identify, document, and communicate risks and issues constructively
 

Requirements:

• 5+ years of QA experience with end-to-end ownership of testing processes
• Strong exploratory testing skills beyond scripted test cases
• Experience testing mobile apps (iOS and Android), including release processes
• Ability to work autonomously across multiple cross-functional teams
• Familiarity with agile workflows, feature flags, and staged rollouts
• Strong requirements analysis skills, able to clarify edge/corner scenarios
• Comfortable with context switching and supporting multiple teams in parallel
• SQL - ability to write moderately complex queries
• API Testing - hands-on experience with REST APIs using tools like Postman
• Solid understanding of HTML, CSS, cookies, caching, browser behavior
• Experience deploying builds via Android Studio, Xcode, or similar tools
• Git - practical experience with branches, commits, code reviews, pull/merge requests
• Upper-Intermediate+ English proficiency

Приєднуйтесь до Sigma Software на позицію Senior Test Engineer та допоможіть формувати якість сучасної соціальної торговельної платформи, яка поєднує електронну комерцію та соціальні мережі. Ця роль надає можливість працювати над продуктом із високим впливом, яким користуються мільйони поціновувачів моди по всьому світу.

Ви станете частиною нашого департаменту Mobile & Web Solutions, співпрацюючи з талановитими фахівцями та застосовуючи модель Quality Assistance для забезпечення виняткового користувацького досвіду.

У Sigma Software ми цінуємо інновації, командну роботу та професійний розвиток. Приєднавшись до нас, ви отримаєте доступ до різноманітних проєктів, підтримку колег і культуру, яка заохочує ініціативність та експертність.

ЗАМОВНИК

Глобальний маркетплейс у сфері моди, який поєднує можливості електронної комерції та соціальних мереж. Платформа дозволяє користувачам продавати кастомізований або рідкісний одяг та аксесуари, сприяючи сталому споживанню через перепродаж непотрібних речей.

ПРОЄКТ

Проєкт являє собою платформу для соціального шопінгу, де користувачі створюють профілі, публікують фотографії та описи товарів для продажу, використовуючи хештеги для зручнішого пошуку. Основний фокус платформи — роздрібний продаж одягу та створення захопливого досвіду купівлі й продажу. Ключовими завданнями є інтеграція платіжних систем та впровадження функцій доступності.

Обов’язки:

• Працювати у складі команди розробки продукту, тісно співпрацюючи з розробниками з боку замовника
• Дотримуватися та підтримувати процес Quality Assistance
• Планувати та оцінювати тестові активності
• Створювати та підтримувати тестову документацію
• Проєктувати та виконувати ручні, snapshot та UI-тести для нових функціональностей
• Проводити функціональне, регресійне та кросплатформне тестування для Web та Mobile платформ
• Виконувати валідацію релізів, smoke-тестування та перевірки якості після розгортання
• Надавати зрозумілі та регулярні звіти щодо статусу та прогресу роботи
• Співпрацювати з Product Owner, Business Analyst та командами розробки для забезпечення якості продукту
• Виявляти, документувати та конструктивно комунікувати ризики й проблеми

Вимоги:

• 5+ років досвіду в QA з повною відповідальністю за тестові процеси від початку до завершення
• Сильні навички дослідницького (exploratory) тестування, що виходять за межі сценарних тест-кейсів
• Досвід тестування мобільних застосунків (iOS та Android), включно з релізними процесами
• Здатність автономно працювати з кількома кросфункціональними командами
• Знання Agile-процесів, feature flags та staged rollouts
• Сильні навички аналізу вимог та вміння опрацьовувати нестандартні й крайові сценарії
• Комфортна робота в умовах частого перемикання контексту та підтримки кількох команд одночасно
• SQL - вміння писати запити середнього рівня складності
• API Testing - практичний досвід тестування REST API за допомогою інструментів на кшталт Postman
• Ґрунтовне розуміння HTML, CSS, cookies, кешування та особливостей роботи браузерів
• Досвід розгортання збірок через Android Studio, Xcode або аналогічні інструменти
• Git - практичний досвід роботи з гілками, комітами, code review та pull/merge requests
• Рівень англійської мови Upper-Intermediate або вище

Are you passionate about building scalable, reliable data systems that power real-world solutions? We are looking for a Senior Data Engineer to join our team and work remotely from Europe, Ukraine, or LATAM.

At Sigma Software, we partner with innovative companies to deliver cutting-edge technology solutions. This role offers the opportunity to design and operate a canonical data platform that integrates diverse external data sources, ensuring high quality and flexibility.

Why join us? You’ll work with modern technologies, collaborate with talented professionals across multiple regions, and have the freedom to experiment and innovate while contributing to impactful projects in the AdTech domain.

CUSTOMER

Our client is a fast-growing AdTech company focused on solving real-world challenges in digital advertising and data-driven marketing. They specialize in building highly resilient and scalable systems that encourage experimentation and innovation. Their data platform is designed to be both powerful and flexible, enabling engineers to introduce new ideas and leverage the latest technologies to optimize advertising performance and audience insights.

PROJECT

The project involves developing and maintaining a canonical data platform that integrates multiple external data sources. It supports both full data loads and incremental updates, ensures high data quality, and leverages AI-assisted tools for monitoring and issue detection.

Key Technologies: Java, Scala, SQL, GCP Dataflow, REST APIs, AI-assisted tools, event-driven architectures

RESPONSIBILITIES

• Design, build, and maintain reliable data pipelines to ingest and process data from external systems
• Implement integrations using Scala, ensuring scalability and resilience
• Handle both full data loads and incremental updates efficiently
• Collaborate with engineering and product teams to align on integration and data needs
• Develop and maintain a unified internal data model
• Ensure data quality, detect and resolve incorrect or incomplete data
• Utilize AI-assisted tools to improve data quality and operational efficiency
• Monitor and optimize data pipelines for production readiness

QUALIFICATIONS

• At least 5 years of experience as a Data Engineer or Backend/Data Engineer
• Strong production experience with Scala
• Proven experience integrating external systems via REST APIs (pagination, rate limiting, token-based authentication)
• Strong data modelling skills with structured, relational data
• Solid SQL knowledge
• Experience with GCP Dataflow
• Experience operating data pipelines in production environments
• Strong communication skills and ability to collaborate across teams
• At least an Upper Intermediate level of English

WILL BE A PLUS

• Experience with event-driven architectures or messaging systems
• Designing canonical schemas across multiple data sources
• Experience with LLM (Large Language Models)

PERSONAL PROFILE

• Proactive and detail-oriented
• Thrives in collaborative environments
• Enjoys solving complex integration challenges
• Comfortable experimenting with new technologies
• Committed to improving data systems

Are you ready to take ownership of impactful initiatives that shape the future of our company and deliver real value to global industries? 

We are looking for a Senior Project Manager with proven experience in technology-focused project management to coordinate complex, multi-team initiatives and ensure successful outcomes.

In this role, you will collaborate closely with engineering, product, and customer success teams, driving projects from concept to completion. At Sigma Software, we value expertise, collaboration, and continuous improvement, creating an environment where your ideas are heard and your contributions make a difference.

Why join us? You will be part of a culture that empowers your career, offers professional growth opportunities, and provides access to cutting-edge projects, modern tools, and a supportive international community.

REQUIREMENTS

• 5+ years of commercial experience in Project Management with a technology focus
• Strong organizational skills and ability to manage complex, cross-functional projects
• Strong sense of ownership and accountability.
• Solid experience with SDLC methodologies (Agile, Scrum, Waterfall)
• Proven track record in setting up Scrum processes and coaching teams
• Strong knowledge of project management tools and processes (planning, estimation, monitoring, risk management)
• Hands-on experience with technical requirements management
• Expert-level knowledge of Jira and Confluence configuration
• Practical experience with BI tools
• Upper-Intermediate English or higher

WILL BE A PLUS:

• Experience in the AdTech domain
• Scrum Master and/or Product Owner certification
• Basic knowledge of SQL

PERSONAL PROFILE

• Skilled at fostering collaboration across diverse teams
• Experienced in coaching teams and driving maturity
• Capable of implementing structured processes that deliver measurable results
• Committed to continuous improvement and knowledge sharing

RESPONSIBILITIES

• Develop detailed project plans in collaboration with engineering leadership, including resource allocation and budget planning
• Coordinate, track, and deliver technical projects spanning multiple teams (engineering, product, threat intelligence, detection, customer success)
• Facilitate all Scrum ceremonies and Agile events to maintain team productivity and cohesion
• Ensure projects are delivered according to scope, schedule, budget, and quality standards
• Plan, manage, and monitor project execution; ensure on-time delivery within allocated budgets
• Conduct project risk analysis, proactively track and communicate risks to stakeholders and customers
• Create and maintain transparent, easy-to-read project documentation and reports
• Establish and continuously improve project management best practices, including tools, templates, and rules of engagement
• Drive change and efficiency in collaboration with internal and external partners
• Be a resource and people manager: participate in hiring planning with Recruiting, support onboarding, and ensure professional growth of team members
• Drive continuous improvements within the Competence Center, contribute to PMO activities and PM training initiatives, and share lessons learned and best practices to enhance project lifecycle efficiency
• Contribute to project lifecycle improvement through lessons learned and best‑practice sharing

Ти готовий (-ва) взяти на себе відповідальність за масштабні ініціативи, які формують майбутнє нашої компанії та приносять реальну цінність глобальним індустріям? 

Ми шукаємо Senior Project Manager з підтвердженим досвідом у технологічно орієнтованому управлінні проектами, щоб координувати складні багатокомандні ініціативи та забезпечувати успішні результати.

У цій ролі ти будеш тісно співпрацювати з командами engineering, product та customer success, ведучи проєкти від концепції до реалізації. У Sigma Software ми цінуємо експертизу, співпрацю та постійне вдосконалення, створюючи середовище, де твої ідеї будуть почуті, а твій внесок матиме значення.

Чому варто приєднатися? Ти станеш частиною культури, яка розвиває твою кар’єру, пропонує можливості професійного зростання та доступ до передових проєктів, сучасних інструментів і підтримуючої міжнародної спільноти.

ВИМОГИ:

• 5+ років комерційного досвіду в Project Management з технологічним фокусом
• Сильні організаційні навички та здатність управляти складними міжфункціональними проєктами
• Високий рівень відповідальності та залученості
• Досвід роботи з методологіями SDLC (Agile, Scrum, Waterfall)
• Підтверджений досвід налаштування Scrum-процесів та коучингу команд
• Ґрунтовні знання процесів та інструментів управління проєктами (планування, оцінка, моніторинг, управління ризиками)
• Практичний досвід роботи з технічним управлінням вимогами
• Експертні знання конфігурації Jira та Confluence
• Практичний досвід роботи з BI-інструментами

• Upper-Intermediate рівень англійської або вище

   

БУДЕ ПЛЮСОМ:

• Досвід у сфері AdTech
• Сертифікація Scrum Master та/або Product Owner

• Базові знання SQL

   

ПЕРСОНАЛЬНИЙ ПРОФІЛЬ:

• Вміння налагоджувати співпрацю між різними командами
• Досвід коучингу команд та підвищення їх зрілості
• Здатність впроваджувати структуровані процеси, що дають вимірювані результати

• Орієнтованість на постійне вдосконалення та обмін знаннями

   

ОБОВ’ЯЗКИ:

• Розробляти детальні плани проєктів у співпраці з engineering leadership, включаючи планування ресурсів та бюджету
• Координувати, відстежувати та забезпечувати виконання технічних проєктів, що охоплюють кілька команд (engineering, product, threat intelligence, detection, customer success)
• Проводити всі Scrum-церемонії та Agile-події для підтримки продуктивності та згуртованості команд
• Забезпечувати виконання проєктів відповідно до обсягу, графіку, бюджету та стандартів якості
• Планувати, управляти та контролювати виконання проєктів; забезпечувати своєчасну реалізацію в межах затверджених бюджетів
• Проводити аналіз ризиків проєкту, проактивно відстежувати та повідомляти про ризики стейкхолдерам і клієнтам
• Створювати та підтримувати прозору, зрозумілу документацію та звіти по проєкту
• Запроваджувати та постійно вдосконалювати найкращі практики управління проєктами, включаючи інструменти, шаблони та правила взаємодії
• Впроваджувати зміни та підвищувати ефективність у співпраці з внутрішніми та зовнішніми партнерами
• Бути ресурсним і people-менеджером: брати участь у плануванні найму з Recruiting, підтримувати onboarding та забезпечувати професійний розвиток членів команди
• Проводити безперервні покращення в межах Competence Center, брати участь у діяльності PMO та тренінгах для PM, а також ділитися уроками, отриманими з досвіду, та найкращими практиками для підвищення ефективності життєвого циклу проєкту
• Сприяти вдосконаленню життєвого циклу проєкту через lessons learned та обмін best practices

Are you a Senior AI Engineer passionate about building scalable AI-driven systems? Join us at Sigma Software to work on a cutting-edge platform that transforms how large-scale engineering organizations manage and analyze complex technical data.

This is a remote position with flexible locations across Europe, Ukraine, and LATAM. You will be part of an innovative team leveraging AI, semantic graphs, and distributed processing to deliver impactful solutions.

At Sigma Software, we value expertise, creativity, and collaboration. Why join us? You will work with advanced technologies, contribute to mission-critical projects, and be part of a company recognized for excellence and innovation.

CUSTOMER

Our customer operates in the EdTech industry, delivering advanced technology solutions that optimize advertising performance and audience targeting. While the name is confidential, the organization is known for leveraging cutting-edge AI and data-driven strategies to enhance campaign effectiveness and deliver measurable business impact.

PROJECT

We are developing a next-generation AI-powered Knowledge Base and Gap Analysis platform for SysML-based engineering environments. The system enables large-scale engineering organizations to ingest, structure, analyze, and reason over complex MBSE artifacts and technical documentation. It supports both cloud and secure classified environments, improving traceability, identifying gaps, and enhancing decision-making in mission-critical projects.

RESPONSIBILITIES

• Design and develop scalable AI-powered backend systems for SysML-based engineering environments
• Build and maintain distributed data ingestion and ETL pipelines for large-scale engineering artifacts and technical documentation
• Develop and optimize LLM-powered workflows for metadata extraction, semantic analysis, and entity resolution
• Implement AI agents and multi-agent orchestration workflows
• Design and improve RAG-based architectures and semantic retrieval pipelines
• Develop graph-based knowledge representation and traceability analysis solutions
• Work with graph databases, graph processing libraries, and semantic relationship modeling
• Build and optimize distributed data processing workflows using Apache Spark
• Collaborate with cross-functional engineering teams to integrate AI capabilities into platform services
• Design scalable and high-performance APIs and backend services
• Improve system reliability, scalability, observability, and performance across distributed environments
• Participate in architecture discussions and technical decision-making processes
• Contribute to cloud-native infrastructure and deployment workflows
• Support deployments in secure, air-gapped, or classified environments when required
• Create and maintain technical documentation and engineering best practices

REQUIREMENTS

• At least 5 years of commercial experience in software engineering, Data Engineering, or AI systems development
• Experience with Golang
• Hands-on experience building distributed and scalable systems
• Practical experience with LLM-based applications and AI integrations
• Experience building AI agents and multi-agent systems
• Strong understanding of RAG architectures and semantic retrieval workflows
• Strong understanding of ETL pipelines and large-scale data ingestion workflows
• Experience with cloud-native infrastructure and distributed environments
• Practical experience with backend platform development and API integrations
• Good understanding of semantic search, entity resolution, and metadata extraction
• Experience working with highly scalable and high-performance systems
• Strong problem-solving and communication skills
• Upper-Intermediate level of English

WILL BE A PLUS

• Background in Data Engineering
• Experience with  distributed data processing, Apache Spark, or Apache Beam
• Experience with Knowledge Graphs and graph-based semantic modeling
• Familiarity with MBSE or SysML environments
• Experience supporting air-gapped or classified environments
• Experience with vector databases and embedding pipelines
• Experience with Kubernetes and cloud platforms such as AWS, GCP, or Azure

PERSONAL PROFILE

• Analytical mindset with strong problem-solving skills
• Ability to work independently and in a distributed team
• Adaptability to secure and classified environments
• Strong communication and collaboration abilities
• Passion for AI-driven engineering solutions

Are you passionate about building secure, high-performance platforms? We are looking for a Senior Java Developer to join our team and work on a cutting-edge security platform. 

This is a remote role open to candidates across Europe and Ukraine.

At Sigma Software, we create innovative solutions for complex ecosystems, ensuring security, scalability, and compliance at every step. You will be part of a talented engineering group designing the unified access layer for distributed services.

Why join us? You will work on a mission-critical project with advanced security architecture, collaborate with skilled professionals, and contribute to a platform that supports global-scale operations.

CUSTOMER

Our customer is a leading EdTech company that uses AI and data-driven technologies to personalize learning experiences, optimize user engagement, and improve marketing effectiveness through advanced audience targeting and analytics.

PROJECT

The project focuses on developing a centralized platform access layer that combines API gateway capabilities, service orchestration, data composition, and fine-grained authorization mechanisms. The platform provides a secure foundation for governance across the ecosystem, supporting complex organizational hierarchies, regional compliance requirements, and consistent policy enforcement.

RESPONSIBILITIES

• Design and evolve the platform access architecture for a large-scale distributed ecosystem
• Build and maintain a unified API layer over multiple distributed services
• Implement fine-grained ABAC authorization at scale, supporting complex hierarchies and relationships
• Develop fail-closed security architectures with strict enforcement guarantees
• Manage regional compliance, data residency, and routing requirements
• Ensure consistent data visibility rules across all products and services
• Design high-performance authorization evaluation systems and policy engines
• Maintain auditability, traceability, and security transparency mechanisms
• Collaborate with platform and product teams on API and access design
• Contribute to architectural decisions and security standards

QUALIFICATIONS

• At least 5+ years of experience building distributed systems
• Strong expertise in Java development
• Experience designing API platforms or API gateways
• Solid background in security architecture and system design
• Experience with authorization systems (RBAC/ABAC or similar)
• Familiarity with cloud-native architectures and scalable, high-availability systems
• Understanding of multi-tenant architectures
• Experience operating complex distributed systems in production
• Strong architectural thinking and problem-solving skills

• Upper-Intermediate or higher English proficiency

   

WILL BE A PLUS

• Experience with Identity and Access Management (IAM) systems
• Experience building API gateways or service mesh architectures
• Work on security-critical or compliance-heavy systems
• Knowledge of policy engines (e.g., OPA)
• Experience with large-scale enterprise platforms
• Familiarity with cloud providers (e.g., GCP)
• Experience with data governance, audit, and compliance systems
• Background in regulated or high-security environments

PERSONAL PROFILE

• Proactive and detail-oriented
• Thrives in collaborative environments
• Enjoys solving complex integration challenges
• Comfortable experimenting with new technologies
• Committed to improving data systems

Are you a proactive and detail-oriented professional who thrives in structured environments and enjoys working with people? We at Sigma Software are looking for a Project Coordinator to join our delivery management team.

As a Project Coordinator, you will play a key role in ensuring seamless communication between clients, managers, and teams, contributing to the success of diverse and dynamic projects. You will gain valuable experience in project management, people coordination, and cross-team collaboration.

Why join us? Sigma Software offers opportunities to work with international clients across multiple industries, exposure to cutting-edge technologies, and a supportive environment where your growth is a priority.

     Requirements

• Proven experience as a Project Coordinator or Project Assistant in the IT industry for at least 1 year
• Strong proficiency with Microsoft tools: Outlook, Excel, Word, PowerPoint, and Teams
• Experience with SharePoint or similar platforms is a plus
• Skilled in creating clear, efficient, and professional reports
• Familiarity with Agile methodologies (theoretical knowledge required)
• Well-developed soft skills: communication, adaptability, problem-solving
• At least 1 year of experience in people management or similar areas, including coaching, mentoring, conflict resolution, motivation, and team building
• Upper-Intermediate or higher level of spoken and written English
  
  Responsibilities
• Support Project Managers and Account Managers in coordinating and monitoring project execution
• Facilitate effective communication between clients, stakeholders, and internal teams
• Assist in people management activities, including hiring planning, supporting professional growth, conducting one-on-one meetings, and collaborating with HR
• Prepare and deliver project status reports and presentations for customers and supervisors
• Maintain and update project management documentation in accordance with company processes
• Assist with project start-up, closure, and handover activities
• Participate actively in hiring processes and conduct interviews
• Support organizational initiatives, including team-building activities
• Manage time reporting and ensure data accuracy

We at Sigma Software are looking for a Senior Java Engineer to join an exciting project in the domain of audience segmentation and engagement. This is a remote role open to candidates from Ukraine and Europe, offering the opportunity to work with cutting-edge technologies and high-scale systems.

You will be part of a team building a real-time platform that powers communications, personalization, automation, and customer engagement across diverse ecosystems. At Sigma Software, we value innovation, collaboration, and technical excellence.

Why join us? You’ll work on challenging tasks, contribute to architectural decisions, and have the freedom to experiment with new technologies while improving data systems at scale.
 

Customer

Our customer is a leading EdTech company that uses AI and data-driven technologies to personalize learning experiences, optimize user engagement, and improve marketing effectiveness through advanced audience targeting and analytics.
 

Project

The project is a real-time platform that enables product teams and business stakeholders to define and manage dynamic user groups based on user attributes, relationships, behavioral events, and historical activity.

Responsibilities

• Design and implement core components of the audience segmentation platform
• Develop and evolve a flexible segment definition language supporting complex targeting scenarios
• Build scalable evaluation engines for processing large-scale entity and relationship data
• Implement relationship-based audience resolution across multiple entity types
• Optimize incremental recomputation for continuous data changes
• Create event-driven pipelines for real-time segment accuracy
• Ensure governance, auditability, and lifecycle traceability of segments
• Design low-latency resolution services for high-scale operations
• Develop caching strategies for dynamic segments and snapshots
• Optimize system performance, scalability, and operational efficiency
• Collaborate with product and engineering teams to define platform capabilities and architecture
• Provide technical leadership and contribute to architectural decisions

Requirements

• At least 5+ years of backend engineering experience
• Strong Java expertise
• Proven experience building distributed systems
• Knowledge of query engines, search platforms, rules engines, segmentation platforms, or analytics systems
• Strong understanding of data modeling and domain-driven design principles
• Experience with event-driven architectures
• Skilled in designing scalable APIs and backend services
• Strong problem-solving and performance optimization skills
• Experience with cloud-native architectures
• Ability to drive technical decisions and contribute to system architecture
• Upper-Intermediate+ English level
   

Will be a plus

• Experience with recommendation engines
• Knowledge of Quarkus
• Experience building Customer Data Platforms (CDP)
• Experience with marketing automation systems
• Expertise in audience segmentation or personalization platforms
• Familiarity with graph-based data models and relationship traversal
• Experience with search technologies (Elasticsearch, OpenSearch)
• Experience with stream processing technologies
• Experience with Google Cloud Platform
• Experience with large-scale analytics systems

Join a project where scalability, resiliency, and real-time communication are at the core of the engineering challenge. We are looking for a Senior Java Developer to help build a high-load multi-channel communications platform used to deliver critical notifications to millions of users worldwide.

As part of Sigma Software, you will work remotely in an international engineering environment and contribute to the development of distributed, event-driven systems with complex delivery pipelines and fault-tolerant architecture.

We at Sigma Software offer the opportunity to influence architectural decisions, work on long-term product development, and collaborate with experienced engineering teams building modern cloud-native solutions.

Customer

Our customer is a leading EdTech company that uses AI and data-driven technologies to personalize learning experiences, optimize user engagement, and improve marketing effectiveness through advanced audience targeting and analytics.

Project

The project focuses on building a modern multi-channel communications platform capable of delivering critical notifications across email, SMS, voice, and push channels at massive scale. The system supports automated workflows, emergency broadcasts, consent management, reporting and analytics, provider failover strategies, and real-time event processing.

Responsibilities

• Design and implement a scalable event-driven communications platform
• Build highly reliable and fault-tolerant message delivery systems
• Manage large-scale real-time event processing pipelines
• Design and implement multi-channel delivery pipelines across email, SMS, voice, and push channels
• Handle compliance requirements, consent management, and communication policies
• Support emergency and high-priority notification workflows
• Implement provider failover and resiliency strategies to ensure delivery continuity
• Build tracking systems for delivery status, retries, and engagement events
• Design and implement observability, reporting, and analytics infrastructure
• Develop event processing and message orchestration workflows
• Implement provider integrations and external messaging service adapters
• Ensure system scalability, throughput, and performance under high load
• Collaborate with product and engineering teams on communication flows and requirements
• Contribute to architectural decisions and long-term platform evolution
• Ensure operational stability, reliability, and maintainability of the system

Requirements

• At least 5 years of  software development experience
• Strong expertise in Java development
• Experience with distributed systems
• Strong experience with event-driven architectures
• Experience with messaging systems, queues, streams, and brokers
• Experience designing high-scale APIs and backend services
• Strong understanding of system reliability and fault tolerance

• Upper-Intermediate English level

   

Will be a plus:

• Experience with email or SMS delivery systems
• Experience with telecom or messaging infrastructure
• Experience with marketing automation platforms
• Experience with notification or engagement systems
• Experience with workflow engines
• Experience with compliance-heavy systems, including consent and GDPR-like regulations
• Experience with high-throughput event processing systems
• Experience with cloud-native platforms, preferably GCP

Join Sigma Software as a Senior Test Engineer and help shape the quality of a cutting-edge social shopping platform that blends e-commerce with social networking. This role offers the opportunity to work on a high-impact product used by millions of fashion lovers worldwide.
 

You will be part of our Mobile & Web Solutions department, collaborating with talented professionals and applying the Quality Assistance model to ensure exceptional user experiences.

We at Sigma Software value innovation, teamwork, and professional growth. By joining us, you will gain access to diverse projects, supportive colleagues, and a culture that rewards initiative and expertise.
 

Customer

Global marketplace for fashion, combining e-commerce with social networking features. It enables users to sell customized or rare clothes and accessories, promoting sustainable consumption by recycling unwanted items for money.
 

Project

The project is a social shopping platform where users create profile pages to post pictures and descriptions of items for sale, enhanced with hashtags for easier discovery. Focused on clothes retail, it aims to deliver an evocative buying and selling experience. Key tasks include payment system integration and accessibility feature implementation.

 

Requirements

• 4,5+ years of QA experience with end-to-end ownership of testing processes
• Strong exploratory testing skills beyond scripted test cases
• Experience testing mobile apps (iOS and Android), including release processes
• Ability to work autonomously across multiple cross-functional teams
• Familiarity with agile workflows, feature flags, and staged rollouts
• Strong requirements analysis skills, able to clarify edge/corner scenarios
• Comfortable with context switching and supporting multiple teams in parallel
• SQL — ability to write moderately complex queries
• API Testing — hands-on experience with REST APIs using tools like Postman
• Solid understanding of HTML, CSS, cookies, caching, browser behavior
• Experience deploying builds via Android Studio, Xcode, or similar tools
• Git — practical experience with branches, commits, code reviews, pull/merge requests
• Upper-Intermediate+ English proficiency
   

Responsibilities

• Work as part of the product development team, collaborating closely with customer-side developers
• Follow and support the Quality Assistance process
• Plan and estimate testing activities
• Create and maintain test documentation
• Design and execute manual, snapshot, and UI tests for new features
• Perform Functional, Regression, and Compatibility testing across Web and Mobile platforms
• Conduct release validation, smoke testing, and post-deployment quality checks
• Provide clear and regular status and progress reports
• Collaborate with product owners, business analysts, and development teams to ensure product quality
• Identify, document, and communicate risks and issues constructively

Are you passionate about building cutting-edge, AI-ready data platforms from the ground up? We are looking for a Senior Data Engineer to join our Data Engineering Team and lead high-impact, greenfield initiatives.

You will work on building modern cloud-native data platforms, migrating on-premises legacy systems to the cloud, and laying the architectural foundation for AI-ready data infrastructure.

In this role, you will collaborate closely with Machine Learning, Data Science, and Product teams, serving as a key technical contributor and thought leader. You will also drive R&D efforts around agentic AI architectures, event-driven systems, and LLM-ready data pipelines — turning architectural concepts into production-grade solutions.

Responsibilities:

• Design and build scalable, cloud-native data platforms from greenfield to production
• Implement near-real-time ingestion pipelines using event-driven patterns
• Define and enforce platform standards, including Data Lake / Lakehouse principles, medallion architecture, and data contracts
• Refactor and optimise existing Spark and PySpark scripts for performance and maintainability
• Introduce best practices for code quality, testing, and CI/CD across data pipelines
• Drive adoption of AI tooling and agentic workflows within the data engineering team
• Ensure data quality, observability, and reliability across all pipelines and platforms

• Develop self-service tooling and microservices to simplify platform usage for other teams

   

Requirements:

• 5+ years of professional experience in Data Engineering
• Strong Python and SQL development skills for pipeline development and optimisation
• Proficiency in Apache Spark / PySpark, including query optimisation and performance tuning
• Hands-on experience with Databricks (preferred) or Snowflake
• Experience with at least one major cloud provider: Azure (preferred), AWS, or GCP
• Experience with stream processing technologies (Kafka, Spark Structured Streaming)
• Solid understanding of ETL/ELT patterns, data modelling (dimensional, Data Vault), and data warehousing
• Experience with orchestration tools (Apache Airflow, Azure Data Factory, or equivalent)
• Knowledge of Infrastructure as Code (Terraform or equivalent)
• Understanding of production-grade system requirements: reliability, scalability, observability, and performance

• Upper-Intermediate English level

   

Will be a plus

• Familiarity with RAG pipeline design and LLM integration patterns
• Knowledge of data governance frameworks and tools (Unity Catalog, Apache Atlas, or similar)
• Experience with dbt for data transformation and modelling

• Familiarity with MLflow, Feature Stores, or ML platform integration

   

Personal profile

• Self-driven and proactive in identifying improvements
• Comfortable working in a fast-paced, innovative environment
• Strong problem-solving mindset with attention to detail
• Open to experimenting with emerging technologies and approaches

_____________________________________________________________

Ти захоплюєшся створенням передових, AI-ready дата-платформ з нуля? Ми шукаємо Senior Data Engineer, щоб ти приєднався(-лася) до нашої команди Data Engineering та очолив(-ла) масштабні, інноваційні ініціативи з нуля.

Ти працюватимеш над побудовою сучасних хмарних дата-платформ, міграцією локальних (on-premises) легасі-систем у хмару та створенням архітектурного фундаменту для AI-ready дата-інфраструктури.

У цій ролі ти тісно співпрацюватимеш з командами Machine Learning, Data Science та Product, виступаючи ключовим технічним експертом та лідером думок. Також ти вестимеш R&D-роботи над agentic AI-архітектурами, подієво-орієнтованими системами та LLM-ready дата-пайплайнами — перетворюючи архітектурні концепції на готові до продакшену рішення.

Обовʼязки:

• Проєктувати та створювати масштабовані, хмарні дата-платформи від концепції до продакшену
• Реалізовувати пайплайни для майже реального часу (near-real-time ingestion) з використанням подієво-орієнтованих патернів
• Визначати та впроваджувати стандарти платформи, включно з принципами Data Lake / Lakehouse, медальйонною архітектурою та дата-контрактами
• Рефакторити та оптимізувати наявні скрипти на Spark та PySpark для підвищення продуктивності та зручності підтримки
• Запроваджувати найкращі практики якості коду, тестування та CI/CD для дата-пайплайнів
• Сприяти впровадженню AI-інструментів та agentic-підходів у команді дата-інженерів
• Забезпечувати якість, спостережуваність (observability) та надійність усіх пайплайнів і платформ

• Розробляти self-service інструменти та мікросервіси, що спрощують використання платформи іншими командами

   

Вимоги:

• 5+ років комерційного досвіду в Data Engineering
• Сильні навички розробки на Python та SQL для створення та оптимізації пайплайнів
• Впевнене володіння Apache Spark / PySpark, включно з оптимізацією запитів та налаштуванням продуктивності
• Практичний досвід роботи з Databricks (бажано) або Snowflake
• Досвід роботи з принаймні одним великим хмарним провайдером: Azure (бажано), AWS або GCP
• Досвід роботи з технологіями потокової обробки даних (Kafka, Spark Structured Streaming)
• Глибоке розуміння ETL/ELT-патернів, моделювання даних (dimensional, Data Vault) та побудови дата-складів
• Досвід роботи з інструментами оркестрації (Apache Airflow, Azure Data Factory або аналогами)
• Знання Infrastructure as Code (Terraform або аналогів)
• Розуміння вимог до продакшен-рішень: надійність, масштабованість, спостережуваність, продуктивність

• Рівень англійської — Upper-Intermediate

   

Буде плюсом:

• Знайомство з проєктуванням RAG-пайплайнів та патернами інтеграції LLM
• Знання фреймворків і інструментів для data governance (Unity Catalog, Apache Atlas або подібних)
• Досвід роботи з dbt для трансформації та моделювання даних

• Знайомство з MLflow, Feature Stores або інтеграцією з ML-платформами

   

Особистий профіль:

• Самомотивованість та проактивність у пошуку покращень
• Комфортна робота у швидкому та інноваційному середовищі
• Сильне аналітичне мислення та увага до деталей
• Відкритість до експериментів з новими технологіями та підходами

Чи захоплює вас перетворення даних на практичні інсайти? Ми шукаємо Senior BI Engineer, який приєднається до нашої команди Data & Analytics і допоможе формувати звітність, створювати дашборди та розвивати підхід до прийняття рішень на основі даних у різноманітних бізнес- та потенційно державних проєктах.

Це роль рівня Senior із можливістю гібридного або віддаленого формату роботи, що забезпечує гнучкість та можливість співпрацювати з талановитими професіоналами з усього світу. Ідеальний кандидат має значний практичний досвід роботи з BI-інструментами, поглиблені знання SQL, моделювання даних та досвід тісної взаємодії з бізнес-стейкхолдерами. Ця роль вимагає не лише технічної експертизи, але й здатності розуміти потреби бізнесу, трансформувати їх у зрозумілі рішення для звітності та забезпечувати точність і надійність даних.

У Sigma Software ми цінуємо інноваційність, точність і командну роботу та створюємо підтримуюче середовище, де ваші знання та досвід можуть мати реальний вплив.

Чому варто приєднатися до нас? Ви працюватимете над важливими проєктами, отримаєте досвід у різних доменах та матимете доступ до переваг, таких як можливості професійного розвитку, міжнародна командна культура та сучасні технології.

Обов’язки:

— Проєктувати, створювати та підтримувати BI-звіти та дашборди
— Аналізувати бізнес-вимоги та перетворювати їх на звітні рішення
— Працювати зі стейкхолдерами для визначення KPI, метрик та логіки даних
— Писати та оптимізувати SQL-запити
— Перевіряти точність даних та досліджувати невідповідності
— Підтримувати покращення моделювання даних та звітного шару
— Співпрацювати з Data Engineers, Business Analysts, PMs та стейкхолдерами з боку замовника
— Готувати документацію для звітів, метрик та джерел даних
— Вносити вклад у розвиток BI best practices у межах юніту

Вимоги:

— 5+ років досвіду у BI, data analytics або data engineering
— Досвід роботи з Power BI, Tableau, Looker чи подібними інструментами буде плюсом
— Просунуті навички роботи з SQL
— Досвід моделювання даних, роботи зі структурами даних та data warehousing
— Розуміння процесів ETL/ELT та data pipelines
— Досвід очищення, валідації та контролю якості даних
— Вміння працювати з великими наборами даних та складною бізнес-логікою
— Добре розуміння бізнес-звітності, KPI та дизайну дашбордів
— Досвід прямої роботи зі стейкхолдерами для збору вимог та уточнення звітних потреб
— Рівень англійської Upper-Intermediate+

Буде плюсом:

— Досвід роботи з урядовими, державними, медичними, фінансовими або іншими регульованими доменами
— Досвід роботи з Azure, AWS, Snowflake, BigQuery, Databricks або Redshift
— Python або R для аналізу даних
— Досвід роботи з dbt, Airflow, Dagster чи подібними інструментами
— Знання data governance, access control та звітності, пов’язаної з комплаєнсом
— Досвід роботи за Agile

Are you passionate about turning data into actionable insights? We are looking for a Senior BI Engineer to join our Data & Analytics team and help shape reporting, dashboarding, and data-driven decision-making across diverse business and potentially government-related projects.

This is a Senior-level role with hybrid or remote work options, offering flexibility and opportunities to collaborate with talented professionals worldwide. The ideal candidate has strong hands-on experience with BI tools, advanced SQL, data modeling, and close collaboration with business stakeholders. This role requires not only technical expertise but also the ability to understand business needs, translate them into clear reporting solutions, and ensure data accuracy and reliability.

At Sigma Software, we value innovation, precision, and teamwork, and we provide a supportive environment where your expertise can make a real impact.

Why join us? You’ll work on meaningful projects, gain exposure to different domains, and enjoy benefits such as professional growth opportunities, a global team culture, and access to cutting-edge technologies.

Responsibilities:

— Design, build, and maintain BI reports and dashboards
— Analyze business requirements and translate them into reporting solutions
— Work with stakeholders to define KPIs, metrics, and data logic
— Write and optimize SQL queries
— Validate data accuracy and investigate inconsistencies
— Support data modeling and reporting layer improvements
— Collaborate with Data Engineers, Business Analysts, PMs, and customer-side stakeholders
— Prepare documentation for reports, metrics, and data sources
— Contribute to BI best practices within the unit

Requirements:

— 5+ years of experience in BI, data analytics, or data engineering-related roles
— Strong experience with Power BI, Tableau, Looker, or similar tools
— Advanced SQL skills
— Experience with data modeling, data structures, and data warehousing
— Understanding of ETL/ELT processes and data pipelines
— Experience with data cleaning, validation, and data quality control
— Ability to work with large datasets and complex business logic
— Good understanding of business reporting, KPIs, and dashboard design
— Experience working directly with stakeholders to gather requirements and clarify reporting needs
— Upper-Intermediate+ English level

Will be a plus:

— Experience with government, public sector, healthcare, finance, or other regulated domains
— Experience with Azure, AWS, Snowflake, BigQuery, Databricks, or Redshift
— Python or R for data analysis
— Experience with dbt, Airflow, Dagster, or similar tools
— Knowledge of data governance, access control, and compliance-related reporting
— Experience with Agile delivery

Чи захоплює вас перетворення даних на практичні інсайти? Ми шукаємо Senior BI Engineer, який приєднається до нашої команди Data & Analytics і допоможе формувати звітність, створювати дашборди та розвивати підхід до прийняття рішень на основі даних у різноманітних бізнес- та потенційно державних проєктах.

Are you passionate about making the internet a safer place? We are looking for a Middle Security Operations Researcher to join our team and help protect enterprise clients from harmful bots and online threats. This is a remote, full-time role that offers the opportunity to work directly with global customers, analyzing traffic patterns and neutralizing malicious activity.

At Sigma Software, we value expertise, ownership, and proactive communication. You will collaborate with a diverse international team while enjoying the flexibility of working from anywhere.

Why join us? You will work on impactful cybersecurity projects, gain exposure to cutting-edge analytics tools, and contribute to safeguarding digital ecosystems worldwide.

CUSTOMER
Our customer is a global provider of comprehensive security solutions, protecting individuals, organizations, and communities from a wide range of risks, particularly in the digital space. Their enterprise-focused products specialize in bot defense and invalid traffic detection, helping clients safeguard critical systems and maintain operational integrity.

PROJECT
The project focuses on real-time threat detection and bot mitigation for enterprise-scale clients. Security Operations Researchers collaborate directly with customers, leveraging advanced analytics platforms to identify malicious traffic patterns and neutralize online threats. This dynamic environment requires both technical expertise and strong communication skills.

JOB DESCRIPTION:

• Provide Tier 2 technical support to customers in real time, delivering clear and professional responses
• Analyze logs, graphs, and dashboards, isolating and investigating data using tools like Kibana
• Manage and organize cases, tickets, and requests in Salesforce
• Perform back-office tasks, including writing and maintaining suspicious field expressions
• Write and optimize SQL queries for data retrieval, analysis, and manipulation in BigQuery
• Communicate with global customers, ensuring timely responses and effective issue resolution
• Work in a shift-based schedule, including weekend shifts

QUALIFICATION:

• 3+ years of experience in data analysis, including working with logs and dashboards
• Experience working with web traffic data, including HTTP traffic, logs, request analysis, and traffic pattern investigation
• Strong SQL skills: Common Table Expressions (CTE), aggregations, GROUP BY, ORDER BY, filters, window functions (e.g., RANK()), and subqueries
• Experience with SIEM systems. Nice to have: experience with the Elastic Stack
• Technical understanding of web technologies and client–server architecture (APIs, HTTP, basic HTML/JavaScript)
• Strong troubleshooting and problem-solving skills
• Experience in customer support, including direct communication with clients; professionalism and politeness are essential

• Strong English communication skills

   

WILL BE A PLUS:

• Experience in a Cybersecurity Analyst/Researcher role, ideally supporting external customers in threat detection and response
• Experience in web security and security research: web application security, bot management, fraud detection
• Basic Python skills
• Experience with Kibana

PERSONAL PROFILE:

• High level of responsibility and ownership
• Ability to work independently with minimal supervision
• Planning and decision-making skills with considerations for multiple integrated systems
• Proactive communicator who keeps stakeholders informed without being prompted

Work schedule: 40 hours per week, 5 days per week. Workdays can be adjusted to start earlier or later, including weekends if necessary.

Join Sigma Software’s Stellar team — a dedicated business unit specializing in Advertising Technology solutions. Stellar is a vibrant community of 300+ experts who have been partnering with the world’s largest AdTech companies and innovative startups since 2008. We help our clients envision, build, and support cutting-edge advertising technology, from concept to thriving business.

We are building a Competence Center focused on deep domain expertise to become best-in-class specialists in the AdTech industry.

Job Description

• Collaborate closely with the Program Manager and Resource Manager to ensure smooth project delivery and optimal team performance
• Drive people management activities: monitor team spirit and motivation, conduct face-to-face meetings, act as a coach in people-related matters, support performance reviews, and work with career roadmaps
• Coordinate recruitment processes in alignment with business needs
• Prepare and maintain project documentation, including status reports, schedules, agendas, and meeting minutes
• Facilitate effective communication and collaboration among team members, stakeholders, and vendors
• Organize and coordinate meetings and workshops, prepare presentations, and document decisions and action items
• Participate in process improvement initiatives and contribute to the development of project management best practices

Qualifications

• Excellent communication and interpersonal skills
• Strong organizational and time management abilities, with the capacity to multitask and prioritize effectively
• Ability to work independently with minimal supervision
• Strong analytical and problem-solving mindset
• Experience in people management, including recruitment and team development
• Collaborative approach and team-oriented mindset
• Positive attitude with a passion for continuous learning and improvement
• Upper-intermediate level of English or higher

Are you passionate about turning data into actionable insights? We are looking for a Senior BI Engineer to join our Data & Analytics team and help shape reporting, dashboarding, and data-driven decision-making across diverse business and potentially government-related projects.

This is a Senior-level role with hybrid or remote work options, offering flexibility and opportunities to collaborate with talented professionals worldwide. The ideal candidate has strong hands-on experience with BI tools, advanced SQL, data modeling, and close collaboration with business stakeholders. This role requires not only technical expertise but also the ability to understand business needs, translate them into clear reporting solutions, and ensure data accuracy and reliability.

At Sigma Software, we value innovation, precision, and teamwork, and we provide a supportive environment where your expertise can make a real impact.

Why join us? You’ll work on meaningful projects, gain exposure to different domains, and enjoy benefits such as professional growth opportunities, a global team culture, and access to cutting-edge technologies.

Responsibilities:

— Design, build, and maintain BI reports and dashboards
— Analyze business requirements and translate them into reporting solutions
— Work with stakeholders to define KPIs, metrics, and data logic
— Write and optimize SQL queries
— Validate data accuracy and investigate inconsistencies
— Support data modeling and reporting layer improvements
— Collaborate with Data Engineers, Business Analysts, PMs, and customer-side stakeholders
— Prepare documentation for reports, metrics, and data sources
— Contribute to BI best practices within the unit

Requirements:

— 5+ years of experience in BI, data analytics, or data engineering-related roles
— Strong experience with Power BI, Tableau, Looker, or similar tools
— Advanced SQL skills
— Experience with data modeling, data structures, and data warehousing
— Understanding of ETL/ELT processes and data pipelines
— Experience with data cleaning, validation, and data quality control
— Ability to work with large datasets and complex business logic
— Good understanding of business reporting, KPIs, and dashboard design
— Experience working directly with stakeholders to gather requirements and clarify reporting needs
— Upper-Intermediate+ English level

Will be a plus:

— Experience with government, public sector, healthcare, finance, or other regulated domains
— Experience with Azure, AWS, Snowflake, BigQuery, Databricks, or Redshift
— Python or R for data analysis
— Experience with dbt, Airflow, Dagster, or similar tools
— Knowledge of data governance, access control, and compliance-related reporting
— Experience with Agile delivery

Чи захоплює вас перетворення даних на практичні інсайти? Ми шукаємо Senior BI Engineer, який приєднається до нашої команди Data & Analytics і допоможе формувати звітність, створювати дашборди та розвивати підхід до прийняття рішень на основі даних у різноманітних бізнес- та потенційно державних проєктах.

Це роль рівня Senior із можливістю гібридного або віддаленого формату роботи, що забезпечує гнучкість та можливість співпрацювати з талановитими професіоналами з усього світу. Ідеальний кандидат має значний практичний досвід роботи з BI-інструментами, поглиблені знання SQL, моделювання даних та досвід тісної взаємодії з бізнес-стейкхолдерами. Ця роль вимагає не лише технічної експертизи, але й здатності розуміти потреби бізнесу, трансформувати їх у зрозумілі рішення для звітності та забезпечувати точність і надійність даних.

У Sigma Software ми цінуємо інноваційність, точність і командну роботу та створюємо підтримуюче середовище, де ваші знання та досвід можуть мати реальний вплив.

Чому варто приєднатися до нас? Ви працюватимете над важливими проєктами, отримаєте досвід у різних доменах та матимете доступ до переваг, таких як можливості професійного розвитку, міжнародна командна культура та сучасні технології.

Обов’язки:

— Проєктувати, створювати та підтримувати BI-звіти та дашборди
— Аналізувати бізнес-вимоги та перетворювати їх на звітні рішення
— Працювати зі стейкхолдерами для визначення KPI, метрик та логіки даних
— Писати та оптимізувати SQL-запити
— Перевіряти точність даних та досліджувати невідповідності
— Підтримувати покращення моделювання даних та звітного шару
— Співпрацювати з Data Engineers, Business Analysts, PMs та стейкхолдерами з боку замовника
— Готувати документацію для звітів, метрик та джерел даних
— Вносити вклад у розвиток BI best practices у межах юніту

Вимоги:

— 5+ років досвіду у BI, data analytics або data engineering
— Досвід роботи з Power BI, Tableau, Looker чи подібними інструментами буде плюсом
— Просунуті навички роботи з SQL
— Досвід моделювання даних, роботи зі структурами даних та data warehousing
— Розуміння процесів ETL/ELT та data pipelines
— Досвід очищення, валідації та контролю якості даних
— Вміння працювати з великими наборами даних та складною бізнес-логікою
— Добре розуміння бізнес-звітності, KPI та дизайну дашбордів
— Досвід прямої роботи зі стейкхолдерами для збору вимог та уточнення звітних потреб
— Рівень англійської Upper-Intermediate+

Буде плюсом:

— Досвід роботи з урядовими, державними, медичними, фінансовими або іншими регульованими доменами
— Досвід роботи з Azure, AWS, Snowflake, BigQuery, Databricks або Redshift
— Python або R для аналізу даних
— Досвід роботи з dbt, Airflow, Dagster чи подібними інструментами
— Знання data governance, access control та звітності, пов’язаної з комплаєнсом
— Досвід роботи за Agile

Are you a Senior AI Engineer passionate about building scalable AI-driven systems? Join us at Sigma Software to work on a cutting-edge platform that transforms how large-scale engineering organizations manage and analyze complex technical data.

This is a remote position with flexible locations across Europe, Ukraine, and LATAM. You will be part of an innovative team leveraging AI, semantic graphs, and distributed processing to deliver impactful solutions.

At Sigma Software, we value expertise, creativity, and collaboration. Why join us? You will work with advanced technologies, contribute to mission-critical projects, and be part of a company recognized for excellence and innovation.

Customer

Our customer operates in the EdTech industry, delivering advanced technology solutions that optimize advertising performance and audience targeting. While the name is confidential, the organization is known for leveraging cutting-edge AI and data-driven strategies to enhance campaign effectiveness and deliver measurable business impact.

Project

We are developing a next-generation AI-powered Knowledge Base and Gap Analysis platform for SysML-based engineering environments. The system enables large-scale engineering organizations to ingest, structure, analyze, and reason over complex MBSE artifacts and technical documentation. It supports both cloud and secure classified environments, improving traceability, identifying gaps, and enhancing decision-making in mission-critical projects.

Requirements

• At least 5 years of commercial experience in software engineering, Data Engineering, or AI systems development
• Experience with Golang
• Hands-on experience building distributed and scalable systems
• Practical experience with LLM-based applications and AI integrations
• Experience building AI agents and multi-agent systems
• Strong understanding of RAG architectures and semantic retrieval workflows
• Strong understanding of ETL pipelines and large-scale data ingestion workflows
• Experience with cloud-native infrastructure and distributed environments
• Practical experience with backend platform development and API integrations
• Good understanding of semantic search, entity resolution, and metadata extraction
• Experience working with highly scalable and high-performance systems
• Strong problem-solving and communication skills
• Upper-Intermediate level of English

WILL BE A PLUS

• Background in Data Engineering
• Experience with  distributed data processing, Apache Spark, or Apache Beam
• Experience with Knowledge Graphs and graph-based semantic modeling
• Familiarity with MBSE or SysML environments
• Experience supporting air-gapped or classified environments
• Experience with vector databases and embedding pipelines
• Experience with Kubernetes and cloud platforms such as AWS, GCP, or Azure

Personal Profile

• Analytical mindset with strong problem-solving skills
• Ability to work independently and in a distributed team
• Adaptability to secure and classified environments
• Strong communication and collaboration abilities
• Passion for AI-driven engineering solutions

Responsibilities

• Design and develop scalable AI-powered backend systems for SysML-based engineering environments
• Build and maintain distributed data ingestion and ETL pipelines for large-scale engineering artifacts and technical documentation
• Develop and optimize LLM-powered workflows for metadata extraction, semantic analysis, and entity resolution
• Implement AI agents and multi-agent orchestration workflows
• Design and improve RAG-based architectures and semantic retrieval pipelines
• Develop graph-based knowledge representation and traceability analysis solutions
• Work with graph databases, graph processing libraries, and semantic relationship modeling
• Build and optimize distributed data processing workflows using Apache Spark
• Collaborate with cross-functional engineering teams to integrate AI capabilities into platform services
• Design scalable and high-performance APIs and backend services
• Improve system reliability, scalability, observability, and performance across distributed environments
• Participate in architecture discussions and technical decision-making processes
• Contribute to cloud-native infrastructure and deployment workflows
• Support deployments in secure, air-gapped, or classified environments when required
• Create and maintain technical documentation and engineering best practices