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 robust 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

Disclaimer: This job posting has been aggregated from external source. Role details, content, and availability are subject to change. Applicants are advised to confirm the latest information directly on the company website before applying.

📌 Sr Python Backend Developer (Bengaluru)
🏢 Wissen Infotech
📍 Bengaluru