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Arnav Singh
Junior Software Engineer specializing in full-stack web, cloud data, and applied ML
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About
Backend engineer who evolved the X-Ray gaming analytics platform, leading a zero-downtime MongoDB→AWS DocumentDB migration with dual-write, checksum-based validation, and Kubernetes canary rollouts while maintaining real-time monitoring for millions of concurrent sessions. Strong in FastAPI/Python API scaling and performance tuning (cut latency from ~2s to <150ms and reduced DB load 90%) plus production-grade auth/RLS security patterns (JWT, Supabase Auth, PostgreSQL RLS).
Experience
Education
Key Strengths
- zero-downtime database migration (MongoDB to AWS DocumentDB) for millions of concurrent sessions
- designed hybrid analytics approach (offloaded historical queries to Snowflake) trading minor freshness for stability
- built containerized checksum validation pipeline achieving 100% data integrity during cutover
- debugged API/version drift and BSON type mismatches via a normalization layer
- scaled FastAPI services with async I/O, OAuth2/JWT auth, and Kubernetes autoscaling
- eliminated N+1 query bottleneck with eager loading/aggregation + Redis caching (latency ~2s to <150ms; DB load -90%)
- managed risk with dual-write + Kubernetes canary rollout (10% traffic increments) and rapid rollback/mitigation
- identified and fixed indexing/performance regression during rollout (sparse index behavior; improved P99 latency)
- implemented database-enforced security with PostgreSQL RLS and role-based policies (Supabase-style)
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