I will fix nodejs backend bugs and optimize postgresql queries

G
gaganr489
G
gaganr489
Gagan
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fix nodejs backend bugs and optimize postgresql queries
Volledig scherm
fix nodejs backend bugs and optimize postgresql queries
Volledig scherm
Volledig scherm
fix nodejs backend bugs and optimize postgresql queriesfix nodejs backend bugs and optimize postgresql queriesfix nodejs backend bugs and optimize postgresql queries

Over deze dienst

Is your Node.js backend throwing errors, crashing, or getting slow as your users grow? I'll find the root cause and fix it.

I'm a backend engineer with 2.5 years on a production SaaS platform serving 500+ enterprise customers and 50K+ daily API requests. I've debugged real production incidents, including a critical SSO failure for a Fortune 500 client.

What I can fix:

  • Bugs, crashes and failing API endpoints
  • Slow PostgreSQL or MySQL queries, missing indexes, N+1 problems
  • Memory leaks, timeouts and high server load
  • Authentication and session issues (JWT, OAuth)
  • Redis caching to speed up heavy endpoints

What you get:

  • A clear explanation of what was wrong and why
  • The fix, tested, with clean code
  • Before and after performance numbers for optimization work
  • Tips to prevent the issue from coming back

Please message me with the error or problem before ordering so I can confirm I can fix it.

  • Programmeertaal

    • JavaScript

  • Expertise

    • Debuggen
    • Lokalisatie
    • Beveiliging
    • Databases
    • Testprocedures

  • Frontend-framework

    • Bootstrap
    • React.js
    • Three.js

  • Backend-framework

    • FastAPI
    • NestJS
    • Node.js

Maak kennis met Gagan

Gagan

Backend Engineer NodeJS NestJS GraphQL AWS

  • Afkomstig uitIndia
  • Lid sindsmrt 2021

  • Talen

    Kannada, Engels, Hindi
I build fast, reliable backends for SaaS products and startups. Backend engineer with 2.5 years building multi-tenant SaaS for 500+ enterprise customers and 50K+ daily API requests: GraphQL APIs, AWS fraud detection, Temporal and Kafka workflows. I've also launched two products of my own with paying users. I can help with: • REST and GraphQL APIs (Node.js, NestJS, FastAPI) • PostgreSQL and Redis design and optimization • Auth, payments and AI/LLM integrations • Docker, CI/CD and AWS deployment Message me with what you're building!

Mijn portfolio

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