Backend Python Developer

5 days ago

Dehra Dūn, India Whatjobs IN C2 Full time

Join our backend team to architect and scale low-latency FX trading services. You’ll build FastAPI microservices, model real-time market data in PostgreSQL, and engineer an idempotent stream consumers across Kafka/Redpanda/RabbitMQ/SQS. ■ Responsibilities - Develop & maintain FastAPI microservices (auth, market ingestion, order flow, reporting) - Design PostgreSQL schemas for tick/quote/OHLCV data - Implement UPSERT logic with deduplication & idempotency - Build queue/stream consumers with robust exactly-once/at-least-once semantics - Optimize: async I/O, connection pooling, indexing, partitioning - Write resilient tests (e.G., property-based for rounding, contract tests for APIs) - Deploy observability: metrics, logs, tracing, alerting ✔■ Must-Have Skills - 2–3 years of Python in production (FastAPI, async, typing, Pydantic) - Solid PostgreSQL knowledge (indexes, query plans, partitioning, ACID/transactions) - Strong with stream/queue systems (Kafka, RabbitMQ, SQS) - Proven track record of idempotent upserts & retry-safe processing - Proficiency with Docker, Git, CI/CD pipelines ■ Nice-to-Have - Experience with FX/market data (ticks, OHLCV, timezones, rounding) - ETL tools (Pandas, NumPy, Arrow), Redis, K8s, Terraform - Security-aware (authN/authZ, rate-limiting, secret handling) ■ Stack You’ll Touch - Python 3.11+ - FastAPI, Pydantic - PostgreSQL 14+ - Kafka/Redpanda (or RabbitMQ/SQS) - Docker, pytest - Prometheus, Grafana

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