Senior Full-Stack Developer(.Net + React)
Company Description
Are you a Senior Full-Stack Developer looking to work on impactful projects in the automotive industry? Join Sigma Software and contribute to cutting-edge solutions that help prevent production faults before they happen. This is a Senior role with a Remote work format, offering full-time engagement and direct collaboration with Customer teams. At Sigma Software, we value innovation, ownership, and engineering excellence — and we’ve been delivering high-quality solutions for over 20 years. Why join us? You’ll work with a modern tech stack, cloud-native environments, and AI-assisted development tools, all while contributing to solutions that make a real difference in production quality. CUSTOMER Our Customer is a well-known German automotive manufacturer with a global presence and a strong reputation for innovation, quality, and engineering excellence. Sigma Software has been collaborating with this Customer for over five years, delivering high-impact software solutions that support their production processes and operational efficiency. PROJECT The engagement involves three interconnected web-based solutions. The primary system aggregates data from multiple Customer systems, processes it, and transforms it into actionable insights. This data — covering organizational, technical, and operational aspects — is used preventively to detect and address potential faults in automotive production lines. In case of a fault, the system provides detailed information to facilitate root cause analysis.
Job Description
Work directly with Customer engineering and product teams to understand business needs, clarify requirements, and propose effective technical solutions Take ownership of end-to-end feature delivery from technical analysis and design to implementation, testing, and production support Design, develop, and maintain high-quality full-stack solutions using .NET, React.js, and cloud technologies Participate in architecture discussions, technical decision-making, and delivery planning Identify and recommend technical improvements, risk mitigation strategies, and optimization opportunities Develop scalable, reliable, and maintainable applications following engineering best practices Work with containerized environments and Kubernetes-based deployments Apply AI-assisted development approaches to improve productivity and code quality Collaborate closely with distributed teams (developers, QA, product owners, architects) Contribute to code reviews, technical documentation, and knowledge sharing Maintain transparent communication and strong alignment with Customer expectations
Qualifications
At least 5 years of professional software development experience Strong hands-on expertise with .NET / C# and modern web technologies Proven background in complex business domains and large-scale enterprise applications Solid experience with ASP.NET Core / Web API, Entity Framework Core, database design and optimization Strong front-end skills with React.js, Redux, Material UI, TypeScript, and modern JavaScript practices Practical experience with cloud platforms (AWS, Azure, GCP) Knowledge of CI/CD processes, automated delivery pipelines, and code quality practices Experience working with containerized environments and Kubernetes Familiarity with AI-assisted development tools and practices Good understanding of software architecture principles, design patterns, and clean code Experience working in Agile teams Upper-Intermediate English level or higher Additional Information PERSONAL PROFILE Proactive, ownership-driven, and capable of working independently Strong analytical and problem-solving skills Comfortable collaborating with distributed, cross-functional teams Adaptable to changing requirements and priorities