Senior Full-Stack Developer

SD Solutions is searching for a Senior Full-Stack Developer (backend-oriented) with a proven track record of building scalable backend systems and APIs to work on behalf of Atlas Invest. You will play a key role in designing, developing, and maintaining our core backend services, with a focus on performance, reliability, and scalability. Responsibilities include: Designing, developing, and maintaining backend services using TypeScript, Node.js, and Python Architecting and optimizing RESTful APIs and integrating with external/internal systems Working with PostgreSQL, MongoDB, GraphQL to manage and optimize data models and queries Implementing scalable WebSocket-based communication and message queues Collaborating with product, frontend, and data teams to deliver high-quality solutions Ensuring smooth CI/CD pipelines and contributing to infrastructure-as-code and deployment strategies Driving performance tuning, security hardening, and system monitoring for backend services Troubleshooting complex issues and leading root cause analysis and resolution Writing clean, maintainable, and well-tested code with a strong emphasis on quality and performance