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Manjory saran - Senior Software Engineer – Backend & Infrastructure

Manjory saran

Senior Backend & Infrastructure Engineer specializing in cloud-native distributed systems

WalmartSan José State University5 Years ExperienceSenior LevelWorks On-Site

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About

LLM infrastructure engineer who built a production-critical real-time personalization and memory retrieval system for a user-facing product, adding <100ms P99 latency while improving relevance ~20–25% and holding SLA through 3x traffic. Experienced designing tiered retrieval backends (Redis + vector store), deploying on Kubernetes with autoscaling/circuit breakers, and running rigorous observability, incident response, and agent evaluation (shadow traffic, A/B tests, regression/replay).

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Key Strengths

  • Built and deployed production-critical real-time LLM personalization/memory retrieval with <100ms added P99 latency
  • Improved response relevance by ~20–25% while maintaining SLA under 3x traffic growth
  • Strong system design for scale (tiered hot/cold retrieval paths; stateless prompt-assembly gateway; offline embeddings/backfills)
  • Pragmatic tradeoff-making (prompt-time retrieval vs fine-tuning; latency predictability over maximum recall; eventual consistency for context)
  • Reliability/incident leadership: diagnosed cache TTL misconfiguration causing P99 spike (120ms→1.5s) and recovered within ~20 minutes via rollback, caps, resizing, and scaling
  • Deep observability practice (golden signals, distributed tracing, custom LLM quality/coverage metrics, decision-point logging)
  • Designed and evaluated agent-based workflows with structured loops, layered state, and online/offline evaluation (A/B, shadow runs, regression/replay)

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Experience

Senior Software Engineer – Backend & InfrastructureWalmart Global Tech · Sep 2024 – Feb 2025
Backend Developer – Data & Application ServicesProscore Technology LLC · Mar 2024 – Sep 2024
Software Engineer – Cloud & Distributed SystemsVMware · May 2022 – Feb 2024
Software Developer – High-Scale Backend SystemsAmazon · Sep 2020 – Mar 2022
Software Developer3D Robotics LLC · Mar 2020 – Sep 2020

Education

San José State Universitymaster, Industrial Systems & Machine Learning (2019)
Institute of Engineering and Rural Technology, Allahabadbachelor, Electronics Engineering (2010)

Languages

English

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Manjory saranSenior Backend & Infrastructure Engineer specializing in cloud-native distributed systems