Sigma Software

We are looking for a skilled Embedded Engineer to join our growing team and support customers in delivering IoT-driven solutions. As our Embedded department continues to expand, we are seeking professionals with strong analytical thinking and solid technical expertise.

In this role, you will collaborate with a team of experienced Embedded Engineers to design and implement high-quality solutions that address real-world challenges. This role suggests working with embedded systems, cloud connectivity, and modern communication technologies.

If you’re a motivated Embedded Developer ready to take the next step in your career, we would be excited to collaborate with you!

Requirements

• 4+ years of experience with C
• Experience with cloud connectivity applications, including monitoring and Firmware-Over-the-Air (FOTA) solutions
• Strong background in communication technologies such as LTE, BLE, OpenThread, MQTT, and cybersecurity
• Practical experience with Yocto Linux
• Practical experience with RTOS
• Experience in debugging and troubleshooting embedded systems, including software debugging on real devices (using J-Link, ST-Link) and resolving system-level issues
• Upper-Intermediate level of English

WOULD BE A PLUS:

• Hardware knowledge
• Experience with Docker, GitLab, and Jira

Responsibilities

• Design separate components, modules, classes, devices
• Code, debug, document, and maintain portions of software and hardware
• Perform different types of testing
• Participate in estimation and planning sessions
• Contribute to the development of technical project documentation and user documentation
• Provide assistance to test engineers and support personnel in solving technical issues of software installation and its operation
• Participate in conference calls and face-to-face meetings with the Customer and Customer partners
• Comply with the best engineering practices, technical standards, and quality criteria set forth on the project
• Report status and progress according to the project and company demands
• Spot current deficiencies in the development process, adopted procedures, and engineering practices, environment configurations, etc., and suggest improvements
• Escalate technical issues to the Architect, Team Lead, and Project Manager

We at Sigma Software are looking for a Middle Python Developer to join an exciting project for a global telecommunications leader. 

This is a full-time position based in Ukraine with the flexibility of remote work. You will be part of a skilled Agile team building a high-impact web application that manages and tracks hardware inventories for millions of users. 

At Sigma Software, we value innovation, professional growth, and work-life balance. You’ll enjoy working in a collaborative environment and contributing to impactful solutions.

CUSTOMER 
Our customer is a leading telecommunications company recognized for delivering innovative, large-scale technological solutions. Operating globally, they provide advanced communication services and infrastructure to millions of users and businesses. Known for their commitment to cutting - edge technology, scalability, and reliability, they offer a dynamic and forward-thinking work environment. 

PROJECT 
The project involves developing a web application to manage and track customers' hardware inventories. It supports the full lifecycle of hardware contracts and products, enabling efficient reporting, monitoring, and operational control. The application integrates with existing systems, leverages modern frameworks, and follows SAFe Agile methodology to ensure high-quality delivery. 

Key Technologies: Python, Django, Django REST Framework, PostgreSQL, Celery, AWS, Unix, Bash, Angular/React 

Job Description

• Design and implement well-structured, maintainable, and robust code solutions
• Develop new features and components, perform refactoring, debugging, and ongoing maintenance
• Conduct peer code reviews and adhere to established engineering practices
• Perform unit and integration testing to ensure code quality
• Analyze requirements and prepare detailed technical designs for features
• Create and maintain technical documentation
• Participate in customer meetings, including conference calls and face-to-face sessions

• Actively contribute to SAFe Agile ceremonies, including estimation, grooming, and planning sessions

   

Qualifications

• 3+ years of experience in Python
• Practical expertise with Django, Django REST Framework (DRF), and Django ORM
• Solid understanding of PostgreSQL
• Experience writing unit tests using Python’s testing frameworks (e.g., TestCase)
• Familiarity with Celery for task scheduling and asynchronous processing
• Experience with AWS and Unix-based systems
• Bash scripting skills
• Experience with Angular or React
• At least Upper - Intermediate level of English

WILL BE A PLUS:

• Experience with microservices architecture
• Knowledge of Docker/Kubernetes
• Familiarity with CI/CD pipelines
• Understanding of telecom industry specifics

PERSONAL PROFILE:

• Proactive and detail-oriented
• Strong communication skills
• Ability to work effectively in distributed teams
• Adaptable and open to feedback
• Collaborative mindset

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:

• 2+ years of experience with data analysis
• Strong understanding of log analysis, APIs, and client-server architecture
• Proficient in SQL, including BigQuery SQL
• Knowledge of HTML, JavaScript, and HTTP request methods
• Strong troubleshooting and problem-solving skills

• Experience in customer support, including direct communication with clients; professionalism and politeness are essential

   

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:

• Good English (speaking/writing)
• 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 our team as a Machine Learning Engineer, shaping the future of Generative AI with cutting-edge demos, scalable architectures, and hands-on development.

 We’re looking for a passionate Machine Learning Engineer to join our team and dive into the exciting world of Generative AI.  You’ll get hands-on experience with cutting-edge demos and proof of concepts (POCs), turning bold ideas into reality. The ideal candidate has solid Back-end engineering skills and is curious about Generative AI development. If you’re familiar with MLOps, large language models (LLMs), or concepts like Retrieval-Augmented Generation (RAG) is a plus, as is experience with Front-end languages! Experience in the Financial Services domain, particularly Banking, will be a big plus. 

You will be exposed to a variety of tasks, including: 

• Develop proof of concepts (PoC). Test and validate new ideas 
• Drive implementation. Optimize and transform data solutions to improve business outcomes 
• Help with proposals as a technical consultant.  

Job Description

• Assist in building and testing Generative AI demos and POCs 
• Support the design of simple, scalable architectures for Generative AI applications 
• Work with team members to integrate AI components into larger systems 
• Use MLOps practices to help automate parts of the model development process 
• Follow guidelines to ensure that Generative AI applications are secure and meet basic governance standards 
• Help deploy AI applications on cloud platforms or on-premises setups with team support 
• Adapt to a fast-paced environment with evolving project needs 
• Keep up with AI trends and apply them to projects with guidance 
• Advise clients. Understand their needs, analyze possible solutions, and present the best options 

Qualifications

• 4+ years of experience in IT industry, with at least 2-3 years of experience in machine learning 
• Solid Back-end engineering skills, particularly with Python (e.g., Django, Flask, or FastAPI). 
• Experience with pre-sales activities and opportunity processing 
• Basic experience with databases or tools like vector databases (e.g., Pinecone, Weaviate, Faiss) 
• Familiarity with AI frameworks such as TensorFlow, PyTorch, or Hugging Face 
• Understanding of CI/CD pipelines  
• Knowledge of RAG or AI application fundamentals (security, governance, etc.) 
• Experience with cloud platforms (AWS, Google Cloud, Azure) or on-premises setups 
• Ability to solve problems and handle shifting priorities with team support 
• Experience with client-facing roles 
• Ability to demonstrate ideas and solutions clearly and confidently 
• Bachelor's or Master's degree in computer science, machine learning, artificial intelligence, or a related field 

• Upper-Intermediate level of English 

   

  Would be a plus

• Knowledge of other programming languages, such as Java or Go 
• Experience with open-source projects or exposure to tools, such as Airflow or Spark 
• Familiarity with containers (e.g., Docker) or orchestration tools (e.g., Kubernetes) 
• Experience in the Banking and Financial Services domain  
• Experience with prompt engineering or fine-tuning LLMs 

We’re seeking a seasoned DevOps Engineer to a team responsible for managing our client’s cloud infrastructure, ML tools, and monitoring systems.

The role involves overseeing daily operations, improving existing processes, and contributing to the development of new solutions.

If you’re passionate about building top-tier desktop apps using cutting-edge technologies, we’d love to hear from you!

Customer

Our client is a rapidly growing technology leader in digital accessibility software that helps enterprises make their web and mobile offerings accessible to everyone. Its AI-enabled products save developer time and reduce risk via proprietary discovery and analysis algorithms that integrate directly into software development pipelines.

Requirements

• At least 4 years of hands-on experience with a modern SaaS environment (AWS, GCP, or Azure)
• Experience with Infrastructure as code (IaC)
• Experience with CI/CD methodologies, using relevant tools (e.g., CircleCI, GitHub Actions)
• Strong expertise in Docker, Kubernetes, and Helm
• Proven experience of managing live production environments, including monitoring and alerting
• At least Upper-Intermediate level of English

Would be a plus

• Experience with Data Lake and MLOps
• Experience with NoSQL and Big Data databases (e.g., Elasticsearch)

• Background in networking, security, and compliance

   

Personal Profile

• Independent, excellent problem solver and passionate about learning new stuff

• Great communicator and team player with a total commitment to providing the best services to all stakeholders

   

Responsibilities

• Design solutions and improve our product architecture
• Plan and execute complex, diverse, large-scale software delivery systems
• Research and integrate new technologies into our stack
• Monitor and implement strategies to improve the efficiency and cost-effectiveness of our solutions

If you want to start or continue your career in an international IT Company - here we are. Our support team is constantly growing and looking for new members to join and provide the best service for our customers. You’ll be part of a collaborative environment where your expertise will directly contribute to multiple innovative projects.

We are looking for an experienced DevOps Engineer who will start new projects and help with existing ones.

Requirements

• 3+ years of experience in DevOps or related roles
• Automation scripting skills (Python, Bash, Batch, Groovy, Shell)
• Solid understanding of CI/CD, automated testing, and disciplined software development practices
• Private cloud configuration experience (OpenStack — priority)
• Experience with CI tools (Jenkins, Zuul, or similar)
• Knowledge of tools and techniques such as Ansible, Docker, Kubernetes
• Strong Intermediate level of English or higher

Would be a plus

• Experience with Linux distributions (Ubuntu, CentOS)
• Monitoring experience with DataDog and/or ELK Stack (Elasticsearch, Logstash, Kibana)
• Experience working in agile environments (Scrum, Kanban, SAFe)

Responsibilities

• Configure, implement, and automate CI/CD pipelines for software delivery, including test automation frameworks
• Continuously improve speed, efficiency, scalability, and stability of integration systems and environments
• Capture demand and trends from development teams into IT processes

We are looking for a Senior Go Developer to join our dynamic team and work on cutting-edge AdTech solutions. This role offers the opportunity to experiment with AI, LLMs, and emerging technologies while solving complex challenges in large-scale data processing.

Customer

Our customer is a global leader in contextual advertising with more than 500 employees worldwide. They specialize in delivering highly relevant ads by leveraging AI, real-time technology, and large-scale data processing. Operating in the AdTech industry, they are recognized for innovation in Connected TV (CTV) advertising. The team you will join works with the agility of a startup while benefiting from the resources of a global organization.

Project

You will contribute to the development of a smart advertising platform that processes terabytes of data to understand audiences and deliver precise, contextual ads. The platform combines AI, LLMs, and emerging technologies to push the boundaries of CTV advertising. In this role, you will own innovation end-to-end — from research and prototyping to delivering production-ready solutions.

Requirements

• 5+ years of hands-on experience using Golang
• Strong experience with system architecture, deployment, and monitoring
• Hands-on experience working with large-scale data workflows
• Solid understanding of scalability, performance, and reliability principles
• Familiarity with the RTB / CTV advertising ecosystem
• Ability to translate business requirements into robust technical solutions
• Strong analytical and problem-solving skills
• Ability to manage multiple priorities and meet deadlines
• Good communication and collaboration skills
• Upper-Intermediate or higher English level

Would be a plus

• Experience in AdTech or contextual advertising
• Knowledge of real-time streaming systems
• Experience with microservices and distributed systems
• Hands-on work with high-throughput data pipelines
• Experience with Python or Node.js / JavaScript

Personal Profile

• Proactive problem solver who thrives in fast-paced environments
• Passion for experimenting with emerging technologies
• Strong sense of ownership and accountability
• Team-oriented with open communication style
• Continuous learner with a drive for self-improvement
   

Responsibilities

• Design, develop, and maintain high-performance backend services using Go
• Participate in architecture design and technical decision-making
• Build and improve solutions for contextual targeting and audience understanding
• Experiment with AI, LLMs, and emerging technologies to support product innovation
• Develop and optimize workflows and data pipelines for large-scale processing
• Collaborate with product managers and team members to define requirements and user stories
• Translate business needs into scalable and reliable technical solutions
• Prototype new ideas and evolve them into production-ready systems
• Monitor, troubleshoot, and improve system performance and stability

Are you a Senior Software Developer passionate about building scalable, high-performance automation solutions? 

Join us at Sigma Software and work on a project that replaces manual processes with robust, Python-driven pipelines.

This is a full-time role open to specialists based in Ukraine, Europe, Armenia, Georgia, and Uzbekistan. You will be part of our Data & Cloud Solutions unit, collaborating remotely with a highly skilled team.

At Sigma Software, we value innovation, ownership, and technical excellence.

Why join us? You’ll have the opportunity to work with cutting-edge technologies, contribute ideas, and see them implemented in real-world solutions impacting thousands of businesses globally.

Customer

Our customer is ConnectWise, a US-based software company specializing in IT management solutions for Managed Service Providers (MSPs). ConnectWise offers a suite of tools helping MSPs deliver services such as remote monitoring, cybersecurity, backup/restore, and administrative management for small and medium-sized businesses. Founded in 1982 and headquartered in Tampa, Florida, the company serves thousands of MSPs worldwide and is recognized for its focus on automation, integration, and enabling service providers to scale efficiently.

Project

You will be working on an Automated Storage Capacity & Lifecycle Pipeline — a system designed to predict storage capacity risks and hardware End-of-Life (EoL) impacts across distributed environments. The project aims to replace manual, Excel-based reporting processes with Python-driven ETL pipelines, integrate with monitoring systems, and ensure data is aggregated, normalized, and stored for historical tracking.

Responsibilities

• Design, develop, and maintain Python-based ETL pipelines for infrastructure and capacity data
• Implement robust data access layers using SQLAlchemy and psycopg2
• Integrate with monitoring and metrics systems (Prometheus / VictoriaMetrics) and inventory sources (NetBox)
• Develop aggregation and normalization logic for capacity data across regions and node types
• Persist and manage historical datasets in PostgreSQL
• Collaborate with Data Engineers and stakeholders to define forecasting and reporting requirements
• Improve reliability, performance, and maintainability of automated pipelines
• Replace manual, Excel-based workflows with scalable, auditable, automated solutions

Requirements

• At least 5 years of professional experience in Python development, including data processing and automation
• Strong hands-on experience with SQLAlchemy and psycopg2 for building and maintaining database interaction layers
• Solid background in working with SQL and relational databases, preferably PostgreSQL
• Practical experience with monitoring and metrics systems such as Prometheus or VictoriaMetrics
• Proven ability to take ownership of solutions from design through to production delivery
• Excellent communication skills for collaboration with both technical and non-technical stakeholders

• Upper-Intermediate level of English

   

Will be a plus:

• Experience with data visualization tools such as Grafana, Kibana, or PowerBI
• Familiarity with NetBox or other CMDB/inventory management tools
• Knowledge of storage systems, capacity planning, or infrastructure lifecycle management
• Background in working with time-series data or forecasting-related solutions
• Proven track record in designing or maintaining ETL pipelines in production environments
• Understanding of data aggregation, normalization, and historical tracking processes
• Experience with cloud or hybrid infrastructure environments

Personal profile:

• Self-driven and proactive
• Strong analytical and problem-solving skills
• Comfortable working in collaborative, cross-functional teams
• Able to communicate complex technical ideas clearly

We are looking for a skilled Embedded Engineer to join our growing team and support customers in delivering IoT-driven solutions. As our Embedded department continues to expand, we are seeking professionals with strong analytical thinking and solid technical expertise.

In this role, you will collaborate with a team of experienced Embedded Engineers to design and implement high-quality solutions that address real-world challenges. This role suggests working with embedded systems, cloud connectivity, and modern communication technologies.

If you’re a motivated Embedded Developer ready to take the next step in your career, we would be excited to collaborate with you!

Requirements

• 4+ years of experience with C
• Experience with cloud connectivity applications, including monitoring and Firmware-Over-the-Air (FOTA) solutions
• Strong background in communication technologies such as LTE, BLE, OpenThread, MQTT, and cybersecurity
• Knowledge of Embedded Linux
• Practical experience with Zephyr RTOS
• Experience in debugging and troubleshooting embedded systems, including software debugging on real devices (using J-Link, ST-Link) and resolving system-level issues
• Upper-Intermediate level of English

WOULD BE A PLUS:

• Hardware knowledge
• Experience with Docker, GitLab, and Jira

Responsibilities

• Design separate components, modules, classes, devices
• Code, debug, document, and maintain portions of software and hardware
• Perform different types of testing
• Participate in estimation and planning sessions
• Contribute to the development of technical project documentation and user documentation
• Provide assistance to test engineers and support personnel in solving technical issues of software installation and its operation
• Participate in conference calls and face-to-face meetings with the Customer and Customer partners
• Comply with the best engineering practices, technical standards, and quality criteria set forth on the project
• Report status and progress according to the project and company demands
• Spot current deficiencies in the development process, adopted procedures, and engineering practices, environment configurations, etc., and suggest improvements
• Escalate technical issues to the Architect, Team Lead, and Project Manager

Company Description

Are you ready to take ownership of mission-critical backend systems in a high-load, transaction-heavy environment? We are looking for a Senior Java Developer to join our Payments Domain team in Warsaw.

This is a hybrid role with 3 days per week in the office, giving you the perfect balance between collaboration and flexibility. At Sigma Software, we value engineering excellence, multicultural teamwork, and delivering secure, high-performance solutions.

Why join us? You’ll work on a platform processing millions of transactions daily, contribute to architectural decisions, and be part of a company where innovation and ownership are encouraged.

CUSTOMER

Our customer is a well-established international company in the iGaming industry, known for its engineering-driven culture and multicultural team distributed across multiple countries. Operating multiple brands across various markets, the company delivers secure, high-performance digital platforms recognized for reliability and scalability.

PROJECT

You will be part of the Payments Domain team, responsible for developing and maintaining a large-scale payments platform built on modern microservices architecture. The platform processes millions of secure transactions daily, supporting multiple brands and geographies. The work focuses on scalability, reliability, and performance in a high-load environment, covering everything from integration with payment providers to transaction monitoring and compliance.

Job Description

• Design, develop, and maintain backend services for the payments platform using Java and Spring Boot
• Ensure high availability, scalability, and performance of transaction processing systems
• Collaborate with cross-functional teams to define technical requirements and deliver solutions end-to-end
• Implement integrations with payment service providers and internal systems
• Participate in architectural discussions and contribute to system evolution in a microservices environment
• Monitor, troubleshoot, and optimize services in production
• Ensure compliance with security, regulatory, and operational standards
• Drive continuous improvement in code quality, testing, and deployment practices
• 3 days per week working from the office

Qualifications

• 5+ years of commercial experience with Java and Spring Boot
• Strong experience with MySQL and Kafka
• Proven track record working with microservices architecture in high-traffic, high-load systems
• Experience developing high-performance backend solutions for transaction-heavy platforms
• Ownership mindset with ability to deliver services end-to-end
• Excellent communication skills in English (C1 level), both written and verbal
• Experience with Kotlin

We at Sigma Software are looking for a skilled Senior Data Engineer to join an exciting short-term project with a US-based customer. This is a remote position, offering you the flexibility to work from anywhere while contributing to a high-impact data platform.

In this role, you will take ownership of designing and optimizing the data foundation for an automated storage capacity forecasting platform. You’ll work with modern technologies, collaborate with experienced engineers, and have the opportunity to influence both technical and process decisions.

Why join us? At Sigma Software, you’ll work in a culture that values innovation, encourages knowledge sharing, and offers the chance to make a real impact on projects used by thousands of businesses worldwide.

CUSTOMER
Our customer is ConnectWise — a US-based software company providing business automation solutions for Managed Service Providers (MSPs). ConnectWise offers a suite of tools for IT service management, cybersecurity, remote monitoring, and business process automation. Their solutions are used globally by thousands of MSPs to streamline operations, improve service delivery, and enhance security for small and medium-sized businesses (SMBs).

PROJECT
The project focuses on building an automated storage capacity forecasting platform for MSPs. The platform will model historical infrastructure data, enable predictive insights, and support lifecycle planning for hardware and storage resources.
It will integrate PostgreSQL, Python-based ETL pipelines, and PowerBI analytics to deliver accurate capacity forecasts and actionable reports for an 18-month planning horizon. The work environment encourages technical ownership, process improvement, and collaborative problem-solving with the customer’s engineering team.

Project duration is 3-4 months

RESPONSIBILITIES

• Design and optimize PostgreSQL data models for historical capacity and lifecycle tracking
• Build and maintain robust ETL pipelines using Python for structured and semi-structured (JSON) data
• Aggregate and structure data by Region, Node Type, and time dimensions
• Support time-series analysis and capacity forecasting use cases
• Develop and enable PowerBI datasets, models, and reports based on clean, reliable data
• Ensure data quality, performance, and scalability across the pipeline
• Translate infrastructure and business requirements into scalable data solutions

• Collaborate closely with software developers and stakeholders on end-to-end data workflows

   

REQUIREMENTS

• At least 5 years of experience as a Data Engineer or in a similar data-focused role
• Strong proficiency in SQL and relational databases, preferably PostgreSQL
• Solid experience with Python for data transformation and pipeline development
• Hands-on experience working with JSON and semi-structured data formats
• Proven track record of building and optimizing ETL processes
• Practical experience with PowerBI, including dataset modeling and report creation
• Experience working with time-series and historical datasets
• Strong understanding of data modelling principles for analytics and forecasting

• Upper-Intermediate level of English 

   

WILL BE A PLUS:

• Experience with Kibana or other BI/visualization tools
• Familiarity with monitoring, infrastructure, or capacity planning data
• Exposure to forecasting techniques or growth trend analysis
• Experience integrating data from metrics and inventory systems

Are you a seasoned Java expert ready to lead a high-performing team in building secure, scalable, and impactful enterprise systems?

At Sigma Software, we value shared ownership, technical excellence, and continuous improvement. As a Senior Software Developer/Team Lead, you will guide a cross-functional team, shape the system architecture, and deliver solutions for regulated environments.

You’ll work in a collaborative environment, gain exposure to complex projects, and enjoy professional growth supported by modern engineering practices.

Sounds like you? Take your chance, and let’s grow up together.

Job Description:

• Lead a cross-functional team of 2–7 engineers, fostering ownership, quality, collaboration, and continuous improvement
• Stay hands-on with code while guiding technical decisions and system architecture evolution
• Design, review, and evolve system architecture with a focus on scalability, performance, and maintainability
• Collaborate with Product Owner, Business Analysts, DevOps, and other delivery teams to align solutions with business goals
• Mentor developers, conduct regular code and technical reviews, and support individual growth through 1:1 sessions
• Influence and improve development processes, engineering best practices, and team workflows
• Manage the full development lifecycle, including sprint planning, estimation, delivery tracking, and retrospectives
• Contribute to long-term technical vision and grow towards broader technical leadership or architectural roles
• Ensure security and data protection requirements are met in regulated environments
• Represent the technical team in stakeholder discussions, communicating progress, risks, and trade-offs

Qualifications:

• 6+ years of commercial software development experience
• 1–3 years in a Team Lead or Technical Lead role, or readiness to step into leadership
• Strong expertise in Java and at least one modern JavaScript framework (React, Angular, Vue)
• Solid understanding of software architecture patterns (microservices, event-driven systems)
• Experience with CI/CD pipelines and containerized environments
• Background in building enterprise, FinTech, or other complex distributed systems
• Strong communication skills with the ability to explain technical decisions and mentor others
• At least an Upper-Intermediate level of English

Will be a plus:

• Experience in regulated or security-sensitive environments
• Exposure to GovTech or FinTech domains
• Familiarity with AI or data analytics integrations in enterprise systems
• Motivation to grow beyond the current role and influence technical direction at scale

Ви досвідчений Java експерт, готовий очолити високоефективну команду та створювати безпечні, масштабовані й значущі корпоративні системи?
Ви працюватиме у командній атмосфері, матиме доступ до складних проєктів та можливість професійного зростання, підтриманого сучасними інженерними практиками.

Обовʼязки:

• Керувати кросфункціональною командою з 2 −7 інженерів, підтримуючи відповідальність, якість, співпрацю та постійне вдосконалення
• Бути залученим до написання коду, водночас спрямовуючи технічні рішення та розвиток архітектури системи
• Проєктувати та вдосконалювати архітектуру з фокусом на масштабованість, продуктивність та підтримуваність
• Співпрацювати з Product Owner, Business Analysts, DevOps та іншими командами для узгодження рішень із бізнес-цілями
• Менторити розробників, проводити регулярні code review та технічні огляди, підтримувати індивідуальний розвиток через 1:1
• Впливати на процеси розробки, впроваджувати інженерні best practices та вдосконалювати робочі процеси команди
• Керувати повним циклом розробки, включно з плануванням спринтів, оцінюванням, відстеженням виконання та ретроспективами
• Робити внесок у довгострокове технічне бачення та рухатися до ширших ролей технічного лідерства або архітектора
• Забезпечувати виконання вимог безпеки та захисту даних у регульованих середовищах
• Представляти технічну команду на зустрічах зі стейкхолдерами, комунікувати прогрес, ризики та компроміси

Вимоги:

• 6+ років комерційного досвіду у розробці ПЗ
• 1–3 роки досвіду на позиції Team Lead або Technical Lead, або готовність перейти в лідерську роль
• Глибокі знання Java та щонайменше одного сучасного JavaScript-фреймворку (React, Angular, Vue)
• Чітке розуміння шаблонів архітектури ПЗ (microservices, event-driven systems)
• Досвід роботи з CI/CD-пайплайнами та контейнеризованими середовищами
• Досвід створення корпоративних, FinTech або інших складних розподілених систем
• Сильні комунікаційні навички, здатність пояснювати технічні рішення та менторити інших
• Рівень англійської не нижче Upper-Intermediate

Буде плюсом:

• Досвід роботи в регульованих або чутливих до безпеки середовищах
• Знання доменів GovTech або FinTech
• Ознайомленість з інтеграціями AI або data analytics у корпоративних системах
• Мотивація розвиватися за межі поточної ролі та впливати на технічний напрямок у масштабі

Are you ready to take ownership of mission-critical backend systems in a high-load, transaction-heavy environment? 

We are looking for a Senior Java Developer to join our Payments Domain team in Warsaw.

This is a hybrid role with 3 days per week in the office, giving you the perfect balance between collaboration and flexibility. 

At Sigma Software, we value engineering excellence, multicultural teamwork, and delivering secure, high-performance solutions.

Why join us? You’ll work on a platform processing millions of transactions daily, contribute to architectural decisions, and be part of a company where innovation and ownership are encouraged.
 

Customer

Our customer is a well-established international company in the iGaming industry, known for its engineering-driven culture and multicultural team distributed across multiple countries. Operating multiple brands across various markets, the company delivers secure, high-performance digital platforms recognized for reliability and scalability.
 

Project

You will be part of the Payments Domain team, responsible for developing and maintaining a large-scale payments platform built on modern microservices architecture. The platform processes millions of secure transactions daily, supporting multiple brands and geographies. The work focuses on scalability, reliability, and performance in a high-load environment, covering everything from integration with payment providers to transaction monitoring and compliance.

Requirements:

• 5+ years of commercial experience with Java and Spring Boot
• Strong experience with MySQL and Kafka
• Proven track record working with microservices architecture in high-traffic, high-load systems
• Experience developing high-performance backend solutions for transaction-heavy platforms
• Ownership mindset with the ability to deliver services end-to-end
• Excellent communication skills in English (C1 level), both written and verbal
• Experience with Kotlin
   

Responsibilities:

• Design, develop, and maintain backend services for the payments platform using Java and Spring Boot
• Ensure high availability, scalability, and performance of transaction processing systems
• Collaborate with cross-functional teams to define technical requirements and deliver solutions end-to-end
• Implement integrations with payment service providers and internal systems
• Participate in architectural discussions and contribute to system evolution in a microservices environment
• Monitor, troubleshoot, and optimize services in production
• Ensure compliance with security, regulatory, and operational standards
• Drive continuous improvement in code quality, testing, and deployment practices

Are you a Senior Data Engineer passionate about building scalable, secure, and high-performance data solutions? Join our Data Engineering Center of Excellence at Sigma Software and work on diverse projects that challenge your skills and inspire innovation.

At Sigma Software, we value expertise, continuous learning, and a supportive environment where your career path is shaped around your strengths. You’ll be part of a collaborative team, gain exposure to cutting-edge technologies, and work in an inclusive culture that fosters growth and innovation.

Project

Our Data Engineering Center of Excellence (CoE) is a specialized unit focused on designing, building, and optimizing data platforms, pipelines, and architectures. We work across diverse industries, leveraging modern data stacks to deliver scalable, secure, and cost-efficient solutions.

Job Description

• Collaborate with clients and internal teams to clarify technical requirements and expectations
• Implement architectures using Azure or AWS cloud platforms
• Design, develop, optimize, and maintain squad-specific data architectures and pipelines
• Discover, analyze, and organize disparate data sources into clean, understandable data models
• Evaluate new tools for analytical data engineering or data science
• Suggest and contribute to training and improvement plans for analytical data engineering skills, standards, and processes

Qualifications

• 5+ years of experience with Python and SQL
• Hands-on experience with AWS services (API Gateway, Kinesis, Athena, RDS, Aurora)
• Proven experience building ETL pipelines for analytics/internal operations
• Experience developing and integrating APIs
• Solid understanding of Linux OS
• Familiarity with distributed applications and DevOps tools
• Strong troubleshooting/debugging skills
• English level: Upper-Intermediate
• WILL BE A PLUS:
• 2+ years with Hadoop, Spark, or Airflow
• Experience with DAGs/orchestration tools
• Experience with Snowflake-based data warehouses
• Experience developing event-driven data pipelines
• Personal Profile

PERSONAL PROFILE:

• Passion for data processing and continuous learning
• Strong problem-solving skills and analytical thinking
• Ability to mentor and guide team members
• Effective communication and collaboration skills

Are you a skilled Test Automation Engineer passionate about building robust testing frameworks and ensuring top-notch product quality? We are looking for a Test Automation Engineer to join our team working with ConnectWise.

At Sigma Software, we value innovation, collaboration, and continuous improvement. You’ll be part of a dynamic Scrum team, working closely with a US-based Customer on a long-term project.

Why join us? You’ll have the opportunity to influence technical processes, work with modern technologies, and grow professionally with access to training programs, certifications, and a supportive team culture.

CUSTOMER
ConnectWise is a US-based software company specializing in IT service management solutions for Managed Service Providers (MSPs). Founded in 1982 and headquartered in Tampa, Florida, ConnectWise serves thousands of MSPs globally with products like Manage, Automate, and BrightGauge. Their tools help IT service providers automate business processes, manage client networks, and deliver efficient technical support.

PROJECT
BrightGauge is a ConnectWise product that enables IT service providers to visualize and track key business metrics through dashboards and reports. The project focuses on enhancing automation capabilities for quality assurance across web UI, APIs, and integrations.

Responsibilities:

• Extend existing web UI and API test automation frameworks (Python + Selenium, TypeScript + Cypress) with new tests
• Collaborate with the team during the product migration to a new platform
• Design and build new Python-based test automation frameworks for the new platform, including technology stack selection
• Integrate new test automation frameworks into CI/CD pipelines
• Develop, automate, and support tests within the created frameworks
• Collaborate with development and QA teams to triage issues and refine test strategies
• Participate in sprint planning, backlog refinement, and quality metrics reporting
• Mentor junior testers and share knowledge across the team

Requirements:

• 4+ years of experience in test automation
• Strong Python skills with a focus on maintainable, scalable test code
• Strong Selenium and Pytest experience
• Strong TypeScript / JavaScript
• Strong experience with modern UI automation tools like Cypress and Playwright
• Experience with Robot Framework
• Strong experience with Web API testing (REST, HTTP)
• Solid understanding of test design techniques
• Strong knowledge of code design patterns and principles
• Prior experience building automation frameworks from scratch
• Strong experience across multiple test types, including functional, regression, smoke/sanity, UI, integration, E2E, API, localization, and cross-browser testing.
• Good AWS experience and understanding of cloud-based architectures
• Good CI/CD experience using GitHub Actions or GitLab CI
• Strong Git workflows and collaboration practices
• Upper-Intermediate English level

Ти досвідчений Test Automation Engineer, який захоплюється створенням надійних фреймворків для тестування та забезпечення високої якості продукту? Ми шукаємо Test Automation Engineer, щоб приєднатися до нашої команди, яка працює з ConnectWise над продуктом BrightGauge.

 
У Sigma Software ми цінуємо інновації, співпрацю та постійний розвиток. Ти станеш частиною динамічної Scrum-команди, яка тісно співпрацює з замовником із США над довгостроковим проєктом.

Чому варто приєднатися до нас? Ти матимеш можливість впливати на технічні процеси, працювати з сучасними технологіями та професійно зростати, отримуючи доступ до навчальних програм, сертифікацій та підтримки дружньої команди.

КЛІЄНТ
ConnectWise - американська софтверна компанія, що спеціалізується на рішеннях для управління IT-послугами для Managed Service Providers (MSPs). Заснована у 1982 році, головний офіс розташований у Тампі, штат Флорида. ConnectWise обслуговує тисячі MSP по всьому світу, пропонуючи продукти Manage, Automate та BrightGauge. Їхні інструменти допомагають IT-провайдерам автоматизувати бізнес-процеси, керувати мережами клієнтів та надавати ефективну технічну підтримку.

ПРОЄКТ
BrightGauge - продукт компанії ConnectWise, який дозволяє IT-провайдерам візуалізувати та відстежувати ключові бізнес-показники за допомогою дашбордів та звітів. Проєкт спрямований на вдосконалення можливостей автоматизації для забезпечення якості у веб-інтерфейсі, API та інтеграціях.

ОБОВ’ЯЗКИ:

• Підтримувати та масштабувати фреймворки автоматизації тестування веб-інтерфейсу та API (Python + Selenium, TypeScript + Cypress)
• Співпрацювати з командою під час міграції продукту на нову платформу
• Проєктувати та створювати нові фреймворки автоматизації тестування на Python для нової платформи, включно з вибором технологічного стеку
• Інтегрувати нові фреймворки автоматизації тестування в CI/CD-пайплайни
• Розробляти, автоматизувати та підтримувати тести в межах створених фреймворків
• Співпрацювати з командами розробки та QA для тріажу дефектів і вдосконалення тестових стратегій
• Брати участь у плануванні спринтів, уточненні беклогу та звітуванні за метриками якості
• Менторити молодших тестувальників і ділитися знаннями з командою

ВИМОГИ:

• 4+ роки досвіду в автоматизації тестування
• Сильні знання Python з фокусом на підтримуваний і масштабований тестовий код
• Впевнений досвід роботи з Selenium та Pytest
• Сильні знання TypeScript / JavaScript
• Досвід роботи з сучасними інструментами автоматизації UI-тестування, такими як Cypress та Playwright
• Досвід роботи з Robot Framework
• Сильний досвід API-тестування (REST, HTTP)
• Глибоке розуміння технік проєктування тестів
• Сильні знання патернів і принципів проєктування коду
• Досвід створення фреймворків автоматизації з нуля
• Досвід роботи з різними типами тестування: функціональне, регресійне, smoke/sanity, UI, інтеграційне, E2E, API, локалізаційне та кросбраузерне
• Хороший рівень знань AWS і розуміння хмарних архітектур
• Досвід роботи з CI/CD (GitHub Actions або GitLab CI)
• Впевнене володіння Git та практиками командної роботи
• Рівень англійської - Upper-Intermediate