Sigma Software Group

Backend Engineer

• Design, develop, and maintain scalable web applications and services across the full stack
• Build backend services and APIs using Python or Node.js, integrating with SQL/NoSQL databases and AWS services
• Implement AWS Lambda functions for serverless workflows
• Optimize application performance, ensuring high availability and scalability
• Collaborate with product managers, designers, and engineers to deliver high-quality solutions
• Write clean, maintainable, and testable code following best practices
• Troubleshoot and resolve technical issues across the stack
• Participate in code reviews and uphold coding standards
• Document APIs using OpenAPI (Swagger) for consistency and clear communication
• Develop unit tests to ensure code quality and reliability
• Stay current with emerging technologies and industry trends

Middle/Senior Python Developer

• Design, develop, and maintain scalable web applications and services across the full stack
• Build intuitive and responsive user interfaces using React.js with JavaScript/TypeScript
• Develop backend services and APIs using Python or Node.js, integrating with SQL/NoSQL databases and cloud services
• Implement AWS Lambda functions for scalable, serverless workflows
• Optimize application performance, ensuring high availability and scalability
• Collaborate with product managers, designers, and engineers to deliver high-quality solutions
• Write clean, maintainable, testable code following industry best practices
• Troubleshoot, debug, and resolve technical issues across the stack
• Participate in code reviews and uphold coding standards
• Design and document APIs using OpenAPI (Swagger)
• Develop unit tests to ensure code quality and reliability
• Stay current with emerging technologies and trends

Senior Full-Stack Developer, Python, React

• Design, develop, and maintain backend services using ASP.NET Core and C#
• Implement data access layers using Entity Framework and Dapper
• Optimize database queries and ensure data integrity in MS SQL Server
• Write and maintain unit tests using XUnit/NUnit/Moq to ensure code quality
• Collaborate with front-end developers, QA engineers, and business analysts to deliver high-quality solutions
• Participate in code reviews, provide constructive feedback, and follow best practices
• Work closely with the customer to clarify requirements and propose technical solutions
• Contribute to continuous improvement of development processes and tools

Middle .NET Developer

SDET

• Perform manual testing of web UI, APIs, and data
• Write and maintain test documentation
• Participate in grooming sessions and collaborate on specifications with the Product Manager

Senior Test Engineer – Food Delivery Platform

Frontend Engineer

• Own and drive the front-end technical vision and architecture ensuring scalability, performance, and long-term maintainability
• Define, evolve, and document front-end standards, frameworks, and best practices including design system direction
• Design and implement scalable front-end solutions leveraging APIs, webhooks, and system integrations
• Identify, analyze, and resolve performance and scalability bottlenecks in high-load, real-time environments
• Lead architectural and technical discussions, challenge assumptions, and influence decisions across Engineering, Product, and other stakeholders
• Collaborate closely with back-end, Product, and Design teams to deliver cohesive, customer-driven solutions
• Provide technical leadership and mentorship to front-end engineers and other technical team members
• Support team growth by contributing to technical interviews, candidate evaluation, and profile definition
• Take ownership in ambiguous or early-stage initiatives driving solutions from concept and prototypes to production

Staff Front-End Engineer – SaaS Video Platform

Staff Front-End Engineer, SaaS Video Platform

Full-stack Engineer

• Design, train, and deploy production-grade ML models (using AWS SageMaker, Bedrock, Comprehend) for predictive analytics, anomaly detection, recommendation engines, and automation.
• Own the entire ML model lifecycle, from training and versioning to secure, low-latency deployment (Model Serving) on AWS.
• Define and implement a company-wide data strategy, including governance, quality, lineage, and access control.
• Implement robust monitoring for model drift, bias, and performance.
• Develop and expose "explainability" endpoints for critical AI decisions (e.g., campaign rejection) to support governance and the Agentic Economy.
• Work with the Platform Back-End Dev to define data pipelines and API contracts for real-time model inference.

AI Software Architect – AdTech

• Contribute to investigations of new technologies and the design of complex solutions
• Develop well-structured technical solutions and write robust code
• Collaborate and communicate professionally with the customer’s team
• Take ownership of delivering major solution features
• Participate in the requirements gathering and clarification process
• Develop core modules and platform functions
• Perform code reviews, write unit and integration tests

Senior Scala Developer, Online Shopping Platform

• Develop software components using C and Rust
• Contribute to the development of technical project documentation and user documentation
• 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 on status and progress according to the project and company demands
• Spot current deficiencies in the development process, adopted procedures, engineering practices, environment configurations, etc., and suggest improvements
• Escalate technical issues to the Architect, Team Lead, and Project Manager
• Improve your qualification within the areas of expertise by attending various training courses, seminars, and/or other educational organizations

Middle/Senior Embedded Developer, Rust

Program Manager

• Ensure internal and external customer management through effective communication at the level required by general business ethics standards
• Oversee service and project delivery through active leadership of the PM team
• Ensure that projects are initiated, aligned, and delivered in accordance with the most appropriate delivery model and project management best practices
• Provide high-quality portfolio risk analysis, tracking, acting upon, and communicating risks appropriately to Customers
• Monitor KPIs such as profitability, revenue, utilization, and attrition
• Be a resource and people manager
• Develop customer relationships and business insight
• Participate in the pre-sale and up-sale for current accounts
• Take corrective actions required to deliver the full scope with the desired quality, on time, and within the budget

Middle/Senior Embedded Developer, Rust, IoT

DevOps Engineer

• Migrate existing SonarCloud integrations to self-hosted SonarQube projects
• Update and maintain Azure DevOps pipelines (YAML and Classic) for integration with SonarQube
• Configure SonarQube project properties, tokens, and connection settings for CI/CD builds
• Manage the project lifecycle in SonarQube (creation, renaming, key management, and quality gates/profiles)
• Ensure the correct execution of analysis for branches, pull requests (PRs), and mainline builds, including ALM decoration
• Validate agent capabilities and resolve issues related to the build and test execution environments
• Modify C# code or test configurations as needed to support successful builds and analysis
• Troubleshoot and resolve compilation, testing, or analysis failures resulting from pipeline or configuration changes
• Contribute to the documentation of the migration process, best practices, and configuration standards

Middle/Senior DevOps Engineer – SonarCloud, SonarQube

• Design and implement large or complex parts of the software
• Develop unit, integration, and automated end-to-end tests
• Participate in requirements clarification sessions and raise questions regarding task inputs and requirements
• Peer-review design and code with senior specialists; proactively request reviews
• Promote clean code practices and good design principles (modularity, reuse, extensibility) and mentor others
• Participate in project/team meetings and contribute relevant input
• Join conference calls and face-to-face meetings with the Customer
• Be available for business trips to the Customer’s office in the EU region

Senior/Principal Full Stack Engineer, Automotive

QA Automation Engineer

• Design and program PLC-based automation systems
• Develop HMI/SCADA interfaces and monitoring tools
• Integrate sensors, pumps, VFDs, and instrumentation for water-cleaning processes
• Implement energy-optimized control strategies adapted to renewable power sources
• Create system documentation (FDS, control narratives, test plans, electrical diagrams)
• Lead FAT, on-site commissioning, troubleshooting, and optimization
• Ensure compliance with safety, quality, and electrical standards
• Coordinate with process, mechanical, and electrical teams throughout the project

Middle/Senior Python Developer

Senior Full-Stack Developer, Python, React

Middle .NET Developer

Senior Test Engineer – Food Delivery Platform

Senior Test Engineer – Food Delivery Platform

Staff Front-End Engineer – SaaS Video Platform

Staff Front-End Engineer, SaaS Video Platform

AI Software Architect – AdTech

Senior Scala Developer, Online Shopping Platform

Middle/Senior Embedded Developer, Rust

Program Manager

Middle/Senior Embedded Developer, Rust, IoT

Middle/Senior DevOps Engineer – SonarCloud, SonarQube

Senior/Principal Full Stack Engineer, Automotive

Principal PLC/Automation Engineer