Sr Python Backend Developer

Senior Python Backend Developer

Job Summary

Own the core processing engine and the services around it, the code that turns a day of financial events into millions of journal lines inside a fixed batch window. The most performance and correctness critical seat on the team.

• Experience: 5 - 10 Years
• Location: Bangalore
• Mode of Work: Hybrid
• Education Qualification: MCA/B.E/B.Tech/MTech
• Job Type: Full time

Key Responsibilities and Duties

• Own the processing engine: set-based SQL inside Python services, concurrent processing, dynamic work partitioning, dimension keys, ledger fan-out
• Own batch orchestration end to end: data-quality gate, currency translation, revaluation, snapshots, period close, every stage idempotent and resumable
• Own performance and concurrency: transaction boundaries, chunk sizing, deadlock handling with backoff, connection usage
• Design services, inter-service contracts, retry semantics and API versioning
• Design and implement REST APIs for processing, configuration and reporting
• Build accounting capability: manual journals, unposting, approval workflow, maker/checker rule lifecycle, suspense, year-end roll, GL export
• Integrate message queues with duplicate controls, dead-lettering and replay
• Write tests for data-intensive logic; mentor junior backend developers

Skills Preferred

• 5-10 years professional Python, including asynchronous programming
• Production depth in FastAPI, Django or Flask
• Expert SQL and strong PostgreSQL: set-based design, plan awareness, upserts, isolation levels, locking
• REST API design at scale and microservice architecture in practice
• Demonstrated high-volume batch engineering, has taken a workload from hours to minutes and can explain why it worked
• Correctness engineering: idempotency, exactly-once under retry, reconciliation, financial precision

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