Backend Engineer - Python

Job Description :

• Design and own Python / FastAPI microservices (async I / O, WebSockets) for real-time voice / data workflows.
• Model and operate MongoDB / Atlas : schema design, indexing, aggregation pipelines, query tuning, TTL / archival, change streams.
• Integrate third-party APIs / services (auth, webhooks, retries, idempotency, observability) and productionize them.
• Contribute to LLM features : tool / function calling, structured outputs (Pydantic / JSON Schema), RAG, evaluations, safety / guardrails.
• Create and maintain deployment pipelines; add metrics, logs, and traces; drive incident response and postmortems.
• Collaborate with frontend, AI, and QA; write documents and runbooks; communicate clearly; and work as a supportive team member.
• 5+ years of backend experience with Python (strong) and FastAPI (or similar async frameworks).
• MongoDB proficiency : schema design, indexes, aggregation, profiling, performance tuning; operational know-how on Atlas.
• CI / CD (GitHub Actions / GitLab CI or similar) and Docker.
• Strong debugging across distributed systems; excellent communication and teamwork.
• Proven third-party integration experience (auth, rate limits, pagination, webhooks).
• Server-side integration with providers (e.g., OpenAI / Azure OpenAI / Bedrock) and streaming responses.
• RAG pipelines (chunking, embeddings, vector stores), prompt versioning, structured outputs.
• Evaluation & safety basics (offline eval sets, regression tests, guardrails / PHI redaction, latency & cost tracking).
• Node.js / TypeScript for tools / edge services.
• PostgreSQL / Redis; event / messaging Real-time comms (SIP / WebRTC), audio streaming, STT / TTS.
• Security / compliance awareness (SOC 2, HIPAA), secrets management.
• Hands-on AWS : IAM & VPC basics, S3, SQS / SNS, API Gateway / ALB, CloudWatch; deploy via ECR + ECS / EKS or Lambda.

(ref : hirist.tech)