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Santhos Kamal Arumugam Balamurugan
Junior Software Developer specializing in LLMs, RAG pipelines, and web applications
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Backend engineer (Encore) who led the evaluation and redesign of a high-volume, low-latency real-time retrieval/ranking and inference platform on AWS, shifting from tightly coupled services to a modular architecture for better fault isolation and independent scaling. Strong focus on production reliability, observability, and security (JWT/RBAC, multi-tenant scoping, Postgres/Supabase RLS), with disciplined migration playbooks (feature flags, shadow traffic, dual writes/reconciliation).
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Key Strengths
- Designed and evolved high-volume, low-latency backend platforms with strict reliability requirements
- Led architectural shift from tightly coupled services to modular backend services for fault isolation and independent scaling
- Production-grade API reliability practices (schemas, health checks, timeouts/retries, circuit breaking, observability)
- Security-first API development (JWT auth, RBAC, secret management, input validation, data-leakage prevention)
- Risk-managed migrations using parallel run, feature flags, shadow traffic, incremental rollout
- Data integrity during migrations via dual writes and reconciliation checks
- Identifies subtle failure modes (stale/inconsistent results, retry storms, cache invalidation issues) and hardens systems with graceful degradation
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