Senior Python Developer

Join a world-class team of engineers at Grid Dynamics as we build mission-critical engineering tools. We are hiring an ownership-driven Backend Developer to architect the Python-based workflow engines and state machines that bridge the gap between complex hardware requirements and streamlined digital approvals.

Essential functions:

🌸Design and implement high-performance, asynchronous Python backend services using FastAPI and asyncio to power complex review workflows.

🌸Translate intricate business logic into robust state machines, managing requirement transitions from Draft through Active to Approved/Rejected states.

🌸Build and maintain the integration layer with JAMA Connect's REST API, ensuring seamless data synchronization and handling edge cases like rate limiting and retries.

🌸Serve as the primary architect for the client-server contract, collaborating with Swift/macOS engineers to define JSON schemas, error codes and status enums.

🌸Design relational database schemas in PostgreSQL that support comprehensive audit trails and versioned records for every approval decision.

🌸Maintain high code quality through rigorous pytest coverage and document the API lifecycle to ensure long-term maintainability for QA and future engineers.

Qualifications

💦Proven experience with async I/O patterns (FastAPI, asyncio, or aiohttp) and a deep understanding of writing non-blocking, scalable code.

💦Strong background in designing and consuming RESTful APIs, including experience with pagination, error handling, and third-party service integrations.

💦Advanced skills in PostgreSQL, specifically in schema design for version tracking, complex migrations, and high-integrity audit logs.

💦Demonstrated experience building state machines or complex workflow engines involving multi-step approvals and status transitions.

💦A "test-first" mindset with professional experience using pytest for unit and integration testing against both mock and live endpoints.

We offer:

☘️Opportunity to work on bleeding-edge projects

☘️Work with a highly motivated and dedicated team

☘️Competitive salary

☘️Flexible schedule

☘️Benefits package - medical insurance, sports

☘️Professional development opportunities

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