Sigma Software

Are you a Senior Backend 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 AdTech 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
• Strong production experience with Go, Rust, Scala or Python
• 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
• Hands-on experience with graph technologies, graph libraries, or graph databases
• Experience with Apache Spark and distributed data processing
• 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 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

Do you thrive on ensuring organizations meet the highest standards in security, privacy, and quality? At Sigma Software, we are looking for a skilled professional to deliver top-tier compliance management expertise to our clients.
 

In this role, you will focus on key compliance areas:

• information security management systems and processes
• privacy and personal data protection
• business continuity management
• quality management systems and processes
• IT service management systems and processes
   

Sigma Software is a global IT service provider delivering high-quality solutions to customers in diverse industries. We combine technical excellence with deep domain expertise, offering innovative approaches and ensuring our projects meet the highest standards. Joining our team means working in an environment that supports professional growth, encourages collaboration, and values continuous improvement.

Requirements:
 

• IT background or experience in the IT industry
• 3-5 years of experience as a Compliance Manager, Quality Manager, Process Analyst/Engineer, Information Security Expert, or similar
• In-depth knowledge of ISO 27000, ISO 9001, and EU GDPR
• Upper-Intermediate level of English or higher
• Experience in passing external certifications
• Proficiency in standard office software, especially Excel
• Strong document management skills
• Accurate record-keeping abilities
• Exceptional communication and interpersonal skills
• Advanced analytical and research skills
• Experience in employee training
   

Will be a plus:

• Knowledge of ISO 13485 and/or ASPICE, TISAX, HIPAA standards
• Training certificate in Management Systems Internal Audit
• Understanding of ITIL/ITSM, CMMI for Services, OWASP SAMM or similar frameworks
• Proficiency in GRC/compliance software

Responsibilities:
 

• Implement, develop, and support management systems within the company, such as ISMS and QMS
• Research, implement, and support privacy requirements (GDPR or other) to ensure alignment with data protection regulations
• Develop and implement comprehensive policies and procedures that align with regulatory requirements, and monitor and assess compliance managers’ documented policies
• Lead and conduct thorough audits to identify areas of risk, non-compliance, and opportunities for improvement
• Lead the identification of non-conformities and provide recommendations for corrective actions
• Collaborate with relevant stakeholders to identify and assess risks and manage regular risk assessments
• Develop, update, and implement advanced compliance training programs for employees across all levels while managing compliance managers’ support for the awareness program
• Investigate, resolve, and provide guidance on complex requests and complaints, ensuring appropriate corrective actions are taken
• Investigate and implement automation of compliance processes

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 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

• 4+ years of commercial experience in Project Management with a technology focus
• Strong organzational 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 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:

• 4+ 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 ready to lead infrastructure strategy for a cutting‑edge AI‑driven SaaS platform? We are looking for a Principal Site Reliability Engineer with a proven track record in scaling, optimizing, and securing cloud‑based systems. This senior role offers the opportunity to shape the reliability and performance of a platform used by finance teams worldwide.

In this role, you will be part of a dynamic engineering environment where your expertise will directly influence product stability and growth. You will work with advanced cloud technologies, automation tools, and AI-driven solutions, contributing to projects that push the boundaries of innovation.

If you are ready to take on strategic responsibility and make a tangible impact, apply now and join us in building the future of reliable, scalable systems.

Customer

Sigma Software is partnering with a fast‑growing AI‑driven SaaS platform serving finance and accounting teams in high‑growth businesses. The platform automates critical workflows — from billing and collections to revenue recognition and reporting, ensuring compliance and accelerating cash flow. Leveraging advanced AI, it reduces manual work, increases operational efficiency, and supports scalability for customers worldwide.

Project

The project focuses on building and scaling an AI-powered SaaS solution for finance automation. It integrates advanced machine learning models with robust cloud infrastructure to deliver secure, compliant, and high‑performance services. The engineering culture emphasizes automation, resilience, and operational excellence.

Requirements

• At least 8 years of experience in Site Reliability Engineering or DevOps roles, including 2+ years in a Principal or Lead position
• Proven experience in infrastructure modernization and scaling initiatives for high‑growth environments
• Strong proficiency in Python
• Deep expertise in cloud platforms and container orchestration tools such as AWS ECS and EKS
• Solid experience in CI/CD pipeline design and optimization using tools like GitHub Actions and Buildkite
• Proficiency in infrastructure‑as‑code tools such as Terraform
• Strong knowledge of monitoring, observability, and performance optimization practices

• Upper-Intermediate level of spoken and written English

   

Would be a plus:

• Experience with monorepos (Turborepo, pnpm)
• Familiarity with modern TypeScript tools (swc, biome, oxc)

• Knowledge of NestJS, NextJS, and testing frameworks (Jest, Vitest)

   

Personal Profile

• Excellent leadership, communication, and decision‑making abilities
• Ability to work independently and make pragmatic build‑vs‑buy decisions in fast‑paced environments

Responsibilities

• Define and lead infrastructure and reliability strategy across the platform
• Design scalable, resilient systems in collaboration with engineering teams
• Optimize build, testing, and deployment processes for speed and stability
• Establish and uphold best practices for CI/CD, monitoring, and observability
• Lead incident response and drive continuous improvement post‑incident
• Automate workflows to reduce operational toil and risk
• Mentor engineers and foster a culture of operational excellence
• Make strategic build‑vs‑buy decisions balancing speed, quality, and sustainability

Готовий(-а) очолити інфраструктурну стратегію для передової AI-керованої SaaS-платформи? Ми шукаємо Principal Site Reliability Engineer із підтвердженим досвідом масштабування, оптимізації та забезпечення безпеки хмарних систем. Це старша позиція, яка дає можливість визначати надійність і продуктивність платформи, якою користуються фінансові команди по всьому світу.

У цій ролі ти станеш частиною динамічного інженерного середовища, де твій досвід безпосередньо впливатиме на стабільність і розвиток продукту. Ти працюватимеш із передовими хмарними технологіями, інструментами автоматизації та AI-рішеннями, беручи участь у проєктах, що розширюють межі інновацій.

Якщо ти готовий(-а) взяти на себе стратегічну відповідальність і зробити відчутний внесок — подавайся та приєднуйся до нас у створенні майбутнього надійних і масштабованих систем.

Замовник
Sigma Software співпрацює зі швидкозростаючою AI-керованою SaaS-платформою, яка обслуговує фінансові та бухгалтерські команди в компаніях із високими темпами зростання. Платформа автоматизує критично важливі бізнес-процеси — від виставлення рахунків і обробки платежів до визнання доходів і фінансової звітності, забезпечуючи відповідність вимогам і прискорюючи грошові потоки. Використовуючи передові AI-технології, вона зменшує обсяг ручної роботи, підвищує операційну ефективність і підтримує масштабованість для клієнтів по всьому світу.

Проєкт
Проєкт спрямований на розробку та масштабування AI-керованого SaaS-рішення для автоматизації фінансових процесів. Він поєднує передові моделі машинного навчання з надійною хмарною інфраструктурою, щоб забезпечити безпечні, відповідні нормативним вимогам і високопродуктивні сервіси. Інженерна культура робить акцент на автоматизації, відмовостійкості та операційній досконалості.

Вимоги

• Мінімум 8 років досвіду в Site Reliability Engineering або DevOps, включно з 2+ роками на позиції Principal або Lead
• Підтверджений досвід модернізації інфраструктури та масштабування у високодинамічних середовищах
• Впевнене володіння Python
• Глибокі знання хмарних платформ і інструментів оркестрації контейнерів, таких як AWS ECS та EKS
• Досвід проєктування та оптимізації CI/CD пайплайнів із використанням GitHub Actions і Buildkite
• Досвід роботи з Infrastructure as Code, зокрема Terraform
• Ґрунтовні знання практик моніторингу, спостережуваності та оптимізації продуктивності
• Рівень англійської — Upper-Intermediate (усний і письмовий)

Буде плюсом:

• Досвід роботи з монорепозиторіями (Turborepo, pnpm)
• Знання сучасних інструментів TypeScript (swc, biome, oxc)
• Знання NestJS, Next.js та тестових фреймворків (Jest, Vitest)

Особистий профіль

• Відмінні навички лідерства, комунікації та прийняття рішень

• Здатність працювати самостійно та приймати прагматичні 

  рішення типу build-vs-buy у динамічних середовищах

Обов’язки

• Визначати та очолювати стратегію інфраструктури й 

     надійності платформи

• Проєктувати масштабовані та відмовостійкі системи у співпраці з інженерними командами
• Оптимізувати процеси збірки, тестування та деплойменту для швидкості й стабільності
• Впроваджувати та підтримувати найкращі практики CI/CD, моніторингу та спостережуваності
• Очолювати реагування на інциденти та впроваджувати покращення за результатами постмортемів
• Автоматизувати процеси для зменшення операційного навантаження та ризиків
• Менторити інженерів і розвивати культуру операційної досконалості
• Приймати стратегічні рішення build-vs-buy, балансуючи швидкість, якість і сталість

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

Приєднуйтесь до Sigma Software на позицію Senior Test Engineer та долучіться до формування якості інноваційної social shopping платформи, яка поєднує e-commerce із соціальними мережами. Ця роль відкриває можливість працювати над продуктом із великим впливом, яким користуються мільйони поціновувачів моди по всьому світу.

Ви станете частиною нашого Mobile & Web Solutions департаменту, співпрацюватиме з талановитими професіоналами та застосовуватиме підхід Quality Assistance, щоб забезпечити винятковий досвід користувачів.

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

Клієнт
Глобальний маркетплейс для моди, який поєднує e-commerce з функціоналом соціальних мереж. Дозволяє користувачам продавати кастомізований або рідкісний одяг та аксесуари, сприяючи сталому споживанню шляхом переробки непотрібних речей за гроші.
 

Проєкт
Соціальна шопінг-платформа, де користувачі створюють профільні сторінки, публікують фото та описи товарів для продажу, додаючи хештеги для зручного пошуку. Зосереджена на роздрібній торгівлі одягом, платформа прагне створити емоційний досвід купівлі та продажу. Основні завдання — інтеграція платіжної системи та впровадження функцій доступності.
 

Вимоги

• 4,5+ років досвіду в QA із повною відповідальністю за процес тестування 
• Сильні навички exploratory testing, що виходять за межі скриптованих тест-кейсів
• Досвід тестування мобільних застосунків (iOS та Android), включно з процесами релізів
• Здатність працювати автономно у кількох крос-функціональних командах
• Знання agile-процесів, feature flags та staged rollouts
• Вміння аналізувати вимоги та уточнювати edge/corner сценарії
• Комфортна робота з context switching та підтримкою кількох команд паралельно
• SQL - вміння писати помірно складні запити
• API Testing - практичний досвід роботи з REST API через інструменти на кшталт Postman
• Добре розуміння HTML, CSS, cookies, caching, поведінки браузерів
• Досвід деплойменту збірок через Android Studio, Xcode або подібні інструменти
• Git - практичний досвід роботи з branches, commits, code reviews, pull/merge requests
• Рівень англійської - Upper-Intermediate+
   

Обов’язки

• Працювати у складі команди розробки продукту, тісно співпрацюючи з розробниками зі сторони замовника
• Дотримуватись та підтримувати процес Quality Assistance
• Планувати та оцінювати тестові активності
• Створювати та підтримувати тестову документацію
• Розробляти та виконувати manual, snapshot та UI тести для нових функцій
• Виконувати Functional, Regression та Compatibility тестування для Web та Mobile платформ
• Проводити release validation, smoke testing та post-deployment перевірки якості
• Надавати чіткі та регулярні звіти про статус і прогрес
• Співпрацювати з product owners, business analysts та командами розробки для забезпечення якості продукту
• Виявляти, документувати та конструктивно комунікувати ризики й проблеми

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 Java or 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

Requirements

• At least 5 years of experience as a Data Engineer or Backend/Data Engineer
• Strong production experience with Java or 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

Join Sigma Software and become part of a team where innovation meets impact. We are looking for a Middle Product Analyst to work remotely from Ukraine or Europe, contributing to cutting-edge AdTech solutions.

You will collaborate with skilled professionals in an agile environment, where your expertise will help shape products that drive measurable business results.

Customer

Our customer is an international technology company specializing in high‑load platforms for data processing and analytics. Their flagship product enables businesses to manage vast volumes of data, build predictive models, and extract actionable insights. Operating globally, they serve clients in the marketing and advertising domain, leveraging cutting-edge technologies, microservices architecture, and cloud‑based solutions to deliver scalable and innovative AdTech systems.

Project

The project focuses on enhancing a data-driven AdTech platform that processes large datasets to optimize marketing campaigns and audience targeting. It integrates advanced analytics, machine learning models, and BI frameworks to deliver measurable business impact. The team works in an agile environment, collaborating closely with Data Scientists, Product Managers, and stakeholders to ensure continuous improvement and innovation in product features.

Key Technologies: Python, Databricks, PySpark, Confluence, Matplotlib

Responsibilities

• Collaborate with Data Scientists to design and refine product features powered by analytics
• Analyze complex datasets to identify trends, anomalies, and opportunities for optimization
• Translate business needs into actionable analytical tasks and solutions
• Support feature launches through testing, feedback gathering, and performance monitoring
• Evaluate feature usage and assess their business impact
• Acquire domain expertise in AdTech to propose enhancements and new ideas
• Participate in data science initiatives, contributing to research and innovation efforts

Requirements

• 3–4 years of experience in solving business problems and delivering actionable insights
• Good knowledge of Python and SQL
• Proven track record in delivering analytics projects using EDA and data analysis tools
• Experience with large datasets and ensuring data integrity
• Proficiency in data visualization tools (Tableau, Power BI, or similar)
• Experience working within Agile frameworks and collaborating with cross-functional teams
• Excellent time management and prioritization skills
• Upper-Intermediate level of English or higher

• Bachelor’s or Master’s degree in engineering or MBA

   

WILL BE A PLUS:

• Experience with Databricks and PySpark
• Familiarity with AdTech domain
• Understanding of cloud-based solutions

Company Description

Are you a seasoned engineer passionate about building scalable, high-performance systems? This Senior-level role offers the opportunity to work remotely with talented teams across Europe, Ukraine, and LATAM.

At Sigma Software, we deliver cutting-edge solutions for global customers, combining technical excellence with a service-minded approach. In this role, you will join a distributed team to architect and evolve an advanced Ads platform, contributing to both innovation and stability.

Why join us? You will work on complex, high-impact systems, collaborate with international experts, and enjoy the freedom to shape architecture and technical patterns that drive long-term success.

CUSTOMER

We partner with a leading company in the AdTech space, delivering high-performance, scalable solutions that empower advertisers to manage campaigns, optimize targeting, and analyze results in real time. The Customer values innovation, reliability, and long-term collaboration, and operates globally with distributed teams in Europe, LATAM, and other regions.

PROJECT

The project focuses on building and evolving core systems for an advanced Ads platform integrated into a product for the interior decor industry. This product enables users to preview and visualize home items before purchase, enhancing shopping experiences both online and in-store.

Job Description

• Design, develop, and maintain APIs and services supporting ad campaign management, targeting, delivery, attribution, and reporting
• Architect scalable, reliable, and high-performance distributed systems
• Optimize systems for high-throughput and low-latency event/data processing
• Drive architectural decisions and establish development patterns
• Collaborate with distributed teams to ensure seamless integration and delivery
• Mentor and guide other engineers, fostering technical excellence

• Ensure code quality, maintainability, and alignment with long-term product goals

   

Qualifications

• At least 5 years of commercial experience in building scalable, high-performance systems
• Hands-on experience with AdTech solutions such as DSP, SSP, ad exchange, prebid, Google Ad Manager, or openRTB
• Strong proficiency in Python, preferably with the Django framework
• Solid knowledge of computer science fundamentals, including data structures, algorithms, and distributed systems
• Good understanding of distributed system architecture with a focus on data availability, reliability, and performance
• Practical experience with Kubernetes, PostgreSQL, and AWS

• Upper-Intermediate level of English

   

WILL BE A PLUS

• Experience with dbt and Redshift

• Familiarity with interior decor industry solutions

   

Additional Information

PERSONAL PROFILE

• Attention to detail and quality
• Excellent communication skills
• Leadership mindset, proactiveness

Ready to work on cutting-edge solutions in the telecom domain? We are looking for a Junior Full Stack Developer to join our team and contribute to a high-impact project in data management and system integration.

CUSTOMER
Our customer is a global leader in Information and Communication Technology (ICT), serving telecom service providers worldwide. They deliver innovative products and services for mobile and fixed communication networks, radio systems, and transmission infrastructure. Recognized for driving innovation in connectivity, the company enables next-generation communication solutions and operates in over 100 countries.

PROJECT
The team will work on a Product Information Service — a scalable, cloud-native system designed to manage product-related data and enable integration across multiple systems. The solution focuses on data management, APIs, and system integration, ensuring reliable and efficient information flow between platforms.

Key Technologies: Python, React, PostgreSQL, Next.js

RESPONSIBILITIES:

• Develop and support backend and frontend parts of the Product Information Service
• Implement REST APIs and help integrate them with other systems
• Work with PostgreSQL databases (design and basic maintenance)
• Build simple and responsive user interfaces using React
• Write unit and basic end-to-end tests to support code quality
• Take part in code reviews and follow team development practices
• Create and maintain technical documentation
• Collaborate with the customer via conference calls and meetings

• Engage in SAFe Agile ceremonies including estimation, grooming, and planning sessions

   

REQUIREMENTS:

• 1.5+ years of professional software development experience using Python
• Experience in implementing RESTful APIs and contributing to their design
• Hands-on experience with PostgreSQL
• Strong skills in React for building responsive UIs
• Understanding of backend system design principles

• Intermediate level of English or higher

   

WILL BE A PLUS:

• Experience with Next.js

   

PERSONAL PROFILE:

• Strong problem-solving skills and attention to detail
• Ability to work collaboratively in a distributed team environment
• Proactive communication and willingness to engage with stakeholders
• Adaptability to changing requirements and priorities

Are you an active and passionate game developer with experience in iGaming? Are you interested in delivering top-notch quality products? If you are ready to take on new projects, lead teams, and deliver exceptional software solutions, we have a great opportunity to join our dynamic team to apply and develop your skills in game development (in the gaming industry).

Our projects focus on quality visuals, graphics and animation which are an important part of the success of the project.

Interesting tasks and a friendly team are waiting for you!

CUSTOMER
Our customer is a leading provider of innovative gambling solutions, specializing in web-based games with high-end visuals and seamless gameplay. They are known for delivering engaging player experiences and pushing the limits of browser-based entertainment.

PROJECT
The project focuses on developing high-end gambling games for both desktop and mobile platforms. These games feature cutting-edge graphics, smooth animations, and optimized performance. You will collaborate closely with artists, developers, and other specialists to create immersive gameplay experiences.

RESPONSIBILITIES
— Develop high-quality slot games from concept to release
— Collaborate closely with game designers, artists, animators, server developers, and QA teams
— Integrate visual assets into the game engine and optimize for performance and memory usage
— Apply AI tools to streamline workflows and enhance creativity
— Provide mentorship and technical guidance to junior developers and artists
— Ensure adherence to best practices and maintain organizational discipline to meet delivery timelines
— Contribute to internal competence centers and innovation initiatives

REQUIREMENTS
— Proven experience in video slot game development
— Strong proficiency in JavaScript / TypeScript / HTML / CSS
— Minimum 3 years’ hands-on experience with PixiJS, Phaser, or similar game engines
— Experience working at the intersection of development and art (Technical Artist or similar role)
— Proficiency with Spine, Adobe Photoshop, Adobe Animate
— Solid understanding of OOP, SOLID principles, and game programming patterns (Game Loop, Update Method, State)
— Familiarity with design patterns (MVC, Singleton, Observer, Decorator, Chain of Responsibility, Abstract Factory)
— Understanding of QA/QC processes, including test cases and test suites
— Upper-Intermediate level of English

WILL BE A PLUS
— Experience with shader development (GLSL or similar)
— Expertise in optimizing 2D graphics, animations, and rendering pipelines
— Experience in crash game development
— Ability to create tools/pipelines to improve collaboration between developers and artists
— Portfolio or pet projects showcasing both technical and artistic skills

Ти активний і енергійний розробник ігор з досвідом роботи в iGaming? Хочеш створювати продукти найвищої якості? Якщо ти готовий братися за нові проєкти, керувати командою та створювати унікальні програмні рішення, у нас є чудова можливість приєднатися до нашої динамічної команди, щоб застосувати та розвинути свої навички в розробці ігор (в сфері ігрової індустрії).

Наші роботи зосереджені на якісній візуалізації, графіці та анімації, які є важливою складовою успіху проєкту. 

На тебе чекають цікаві завдання та дружня команда!

КЛІЄНТ
Наш клієнт — провідний постачальник інноваційних рішень у сфері азартних ігор, який спеціалізується на веб-іграх з високоякісною графікою та плавним геймплеєм. Він відомий тим, що створює захоплюючий досвід для гравців та розширює можливості браузерних розваг.

ПРОЕКТ
Проєкт спрямований на розробку високоякісних азартних ігор для настільних та мобільних платформ. Ці ігри вирізняються передовою графікою, плавними анімаціями та оптимізованою продуктивністю. Ти будеш тісно співпрацювати з художниками, розробниками та іншими спеціалістами, щоб створювати захоплюючі ігрові світи.

ОБОВ’ЯЗКИ
— Розробляти високоякісні слот-ігри від концепції до релізу
— Тісно співпрацювати з геймдизайнерами, художниками, аніматорами, серверними розробниками та QA-командами
— Інтегрувати візуальні ресурси в ігровий рушій та оптимізувати їх для продуктивності та використання пам’яті
— Використовувати AI-інструменти для оптимізації робочих процесів та підвищення креативності
— Надавати наставництво та технічну підтримку молодшим розробникам і художникам
— Дотримуватись найкращих практик та підтримувати організаційну дисципліну для виконання планів у встановлені терміни
— Брати участь у внутрішніх competence centers та інноваційних ініціативах

ВИМОГИ
— Підтверджений досвід розробки відео слот-ігор
— Впевнене володіння JavaScript / TypeScript / HTML / CSS
— Мінімум 3 роки практичного досвіду роботи з PixiJS, Phaser або іншими ігровими рушіями
— Досвід роботи на перетині розробки та мистецтва (Technical Artist або подібна роль)
— Володіння Spine, Adobe Photoshop, Adobe Animate
— Ґрунтовне розуміння принципів ООП, SOLID та шаблонів програмування ігор (Game Loop, Update Method, State)
— Знання шаблонів проєктування (MVC, Singleton, Observer, Decorator, Chain of Responsibility, Abstract Factory)
— Розуміння основ QA/QC-процесів, включно з тест-кейсами та тест-сюітами
— Англійська на рівні Upper-Intermediate

БУДЕ ПЛЮСОМ
— Досвід розробки шейдерів (GLSL або подібні)
— Експертиза в оптимізації 2D-графіки, анімацій та рендеринг-пайплайнів
— Досвід розробки crash-ігор
— Здатність створювати інструменти/пайплайни для покращення співпраці між розробниками та художниками
— Портфоліо або pet-проєкти, що демонструють як технічні, так і художні навички

Are you passionate about building scalable, high-load systems and tackling complex engineering challenges? Join Sigma Software’s team as a Senior/Principal TypeScript Full Stack Engineer with a strong backend focus - NodeJS, and work on a modern, high-impact product alongside a distributed, collaborative team.

This role is open to candidates based in LATAM and Europe, offering the flexibility to work in a global environment and contribute to cutting-edge architecture while enhancing your expertise in backend development.

At Sigma Software, we value innovation, technical excellence, and career growth. You’ll be part of a project where your work directly influences product performance, scalability, and user experience.

Requirements

• 5+ years of experience in software engineering
• Strong proficiency in TypeScript with deep backend expertise
• Solid understanding of relational databases and caching systems
• Preferred technologies and tools: NestJS, Turborepo, monorepo environments (pnpm or similar)
• Knowledge of cloud environments (AWS preferred) and CI/CD practices
• Familiarity with frontend frameworks (React, Next.js)
• Strong understanding of software architecture principles and scalability strategies
• Excellent problem-solving skills and ability to work in a collaborative, agile environment

• Upper-Intermediate English level or higher

   

Will be a plus

• Familiarity with monorepo environments (pnpm or similar)

   

Personal Profile

• Enjoys solving complex challenges
• Collaborative mindset in distributed teams
• Strong problem-solving abilities

• Committed to code quality and scalability

   

Responsibilities

• Design, develop, and optimize backend services and APIs for high-load, distributed systems
• Contribute to frontend components using React and Next.js when required
• Ensure scalability, reliability, and security across all services
• Apply best practices in software architecture, code quality, and testing
• Participate in code reviews, mentoring, and technical discussions
• Collaborate with product managers, designers, and other engineers to deliver end-to-end features

Are you passionate about building intelligent systems that can think, act, and adapt? We are looking for a AI-augmented Software Developer to join our team remotely from Albania, Europe, or Ukraine. 

At Sigma Software, we work on innovative AI-driven solutions that push the boundaries of technology. In this role, you will design, build, and optimize cutting-edge agentic AI systems, from autonomous agents to complex orchestration layers, for both greenfield products and established platforms. 

Why join us? You will have the opportunity to work with advanced AI tools, collaborate with top-tier engineers, and contribute to projects that redefine how AI interacts with the world — all while enjoying flexibility, professional growth, and a supportive global team. 

Job Description

DESIGN & DEVELOPMENT

• Build and maintain AI SDLC pipelines, tooling, and automation logic across the development lifecycle
• Implement agentic AI patterns, multi-agent workflows, and intelligent task automation
• Work with tools such as Claude Code, Cursor, Microsoft Copilot, and other AI engineering environments

RESEARCH & EXPERIMENTATION

• Evaluate emerging agentic AI models, frameworks, and toolkits
• Build POCs and prototypes to benchmark scalability, reliability, and architecture fit
• Propose optimal designs based on hands-on research and clear analysis of trade-offs

CONSULTING & COLLABORATION

• Work with product teams, architects, and clients to define requirements and shape agentic AI solutions
• Communicate complex technical concepts clearly to non-technical stakeholders
• Guide clients on AI tool adoption (both greenfield and brownfield) 

Qualifications

• 3–5+ years as a Software Engineer, including 1 year of extensive AI Agentic Systems experience 
• Strong practical development experience — JavaScript/TypeScript preferred; Python, Java, Go also acceptable 
• Hands-on experience implementing agentic AI architectures, AI orchestration frameworks, autonomous agents & multi-agent systems, MCP integrations 
• Solid understanding of AI model lifecycle, prompting, evaluation loops, and continuous improvement 
• Ability to work independently and own end-to-end technical delivery 
• Consulting experience or strong client-facing communication skills 
• Curiosity and experimentation mindset 
• Experience running POCs, technical evaluations, or benchmarking approaches 

WILL BE A PLUS

• Experience with vector databases, RAG, and embeddings 
• Background in backend engineering, MLOps, or system design 
• Understanding of LLM fine-tuning or model customization 
• Experience integrating AI into production-grade applications 

PERSONAL PROFILE

• Self-driven engineer with strong programming skills 
• Consulting mindset with ability to advise clients 
• Passion for experimenting with cutting-edge AI frameworks 
• Strong communication skills for cross-functional collaboration 
• Ability to deliver robust, scalable AI solutions 

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.

Are you passionate about building scalable, reliable data systems that power real-world solutions? We are looking for a Senior Scala Developer 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 Java or 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

Requirements

• At least 5 years of experience as a Software Engineer
• Strong production experience with Java or Scala
• Experience with Spark
• 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 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 Java or 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

Requirements

• At least 5 years of experience as a Data Engineer or Backend/Data Engineer
• Strong production experience with Java or 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