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Niranjaan Munuswamy
Mid-level Full-Stack & Data Engineer specializing in AWS cloud and real-time streaming
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About
Backend engineer with experience at Cigna evolving REST API services backed by PostgreSQL, emphasizing reliability/correctness, scalability, and observability. Has hands-on production experience with FastAPI (contract-first design, Pydantic schemas), performance tuning (indexes, caching), and secure auth patterns (OAuth/JWT, RBAC, row-level security via Supabase), plus low-risk incremental rollouts using feature flags and dual writes.
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Key Strengths
- Evolved backend systems with clear architectural goals (reliability, performance, scalability, maintainability, observability)
- Strong tradeoff-driven design (e.g., strong vs eventual consistency based on operation type)
- FastAPI API design focused on predictable frontend integration (standardized responses, schemas, pagination)
- Performance optimization under load (indexing, query tuning, caching for hot reads)
- Secure API implementation (OAuth/JWT, RBAC, input validation, parameterized DB access)
- Safe incremental refactors/migrations (feature flags, backward-compatible migrations, validated backfills, dual-write/compare, gradual rollout)
- Improved robustness by preventing duplicate writes from retries (idempotency keys + unique constraints + transactions)
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