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Muhammad Midhat

Senior Full-Stack/Backend Engineer specializing in APIs, distributed systems, and AI integrations

Freelance Full Stack / Backend Engineer9 years experienceSeniorTechnologyWeb DevelopmentSaaS
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About

AI/backend engineer who has built and scaled production LLM-powered SaaS features (document assistant + compliance review agent) on a Node.js/TypeScript + Postgres/Redis stack deployed to GCP Kubernetes. Demonstrates strong production reliability chops—async queueing, autoscaling, observability, and database tuning—with quantified wins (p95 latency -60%, query 4s to <200ms) and robust AI guardrails (strict RAG, schema validation, citations, HITL).

Experience

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Education

University Malaysia Pahangmaster, Computing (Research) (2026)
Government College University Faisalabadbachelor, Computer Science (2017)

Key Strengths

  • Built and operated AI-enabled backend on GCP/Kubernetes serving ~20k+ monthly users
  • Diagnosed and reduced p95 latency ~60% via async queueing, indexing, caching, and autoscaling
  • Designed scalable async processing with BullMQ, retries/backoff, dead-letter handling, and queue-lag alerting
  • End-to-end ownership of LLM application features (RAG, prompt orchestration, vector storage, monitoring, evals)
  • Strong AI reliability/accuracy guardrails: strict RAG, schema validation, citations, confidence scoring, feedback loops
  • Designed robust agent/workflow systems with plan/execute/verify separation and bounded, idempotent execution
  • Production operations maturity: correlation IDs, structured logs, metrics, feature-flag rollouts and rapid rollback
  • Database performance tuning: partial indexes + materialized views improving query latency from ~4s to <200ms

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Languages

EnglishUrdu

Skills

API DesignAPI DocumentationAPI SecurityAsync ProcessingAudit TrailsAuthenticationAuthorizationBackground JobsCI/CDCommand ParsingComputer VisionCRM IntegrationsCRM/ERP SystemsData Exchange OptimizationData Synchronization Pipelines