I will develop scalable nodejs nestjs backend with rest api mysql

K
kds_eth
K
kds_eth
Koudous Salifou
develop scalable nodejs nestjs backend with rest api mysql
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develop scalable nodejs nestjs backend with rest api mysql
Full Screen
develop scalable nodejs nestjs backend with rest api mysqldevelop scalable nodejs nestjs backend with rest api mysql

About this gig

Need a production-grade backend that scales? Senior Backend Developer with 3+ years shipping Node.js APIs in production for SaaS, social networks, marketplaces, and Web3 platforms.


WHAT I BUILD

REST APIs (Node.js, NestJS, Express, AdonisJS) with clean architecture

Authentication systems (JWT, OAuth2, SIWE, role-based access)

Database design (PostgreSQL, MySQL, MongoDB, Redis)

Real-time features (WebSocket, Socket.io, Server-Sent Events)

Background jobs / queues (BullMQ, Redis, cron)

Third-party integrations (Stripe, OAuth, Twilio, Firebase, Supabase)

Cloud deployment (AWS, Docker, GitHub Actions CI/CD)

Web3 integrations (optional): on-chain indexing, RPC handling, oracle data


MY STANDARDS

Clean architecture (DDD-friendly when scope justifies)

80-90%+ test coverage (Jest)

OpenAPI / Swagger documentation

Database migrations & seeders

Error monitoring, structured logging

Production-ready deploy with CI/CD


EXPERIENCE

3+ years production Node.js. Shipped backends for: a social network platform (Node.js + MySQL + AWS), a multi-source crypto monitoring backend (NestJS + PostgreSQL syncing CoinMarketCap, Alchemy, NFTScan, OpenSea), and Metasender (multi-chain dApp infrastruct

  • Programming language

    • TypeScript

  • Expertise

    • Algorithms & Data structures
    • Debugging
    • Performance
    • Security
    • Databases

  • Frontend framework

    • Next.js
    • Nuxt.js
    • React.js
    • Tailwind CSS
    • Vue.js

  • Backend framework

    • Express.js
    • Fastify
    • NestJS
    • Next.js
    • Node.js

  • AI & low/no code builders

    • Cursor

Get to know Koudous Salifou

Koudous Salifou

Full Stack Developer

  • FromBenin
  • Member sinceApr 2025

  • Languages

    English, French
Senior Full-Stack & Blockchain Developer with 3+ years building production websites, dApps, smart contracts, and APIs. Founder & developer of Metasender — a multi-chain dApp live on Ethereum, Polygon, BNB, Avalanche, Base, Arbitrum, Optimism, Solana, and Tron. I deliver: React/Next.js frontends (landing pages, SaaS dashboards, dApps), Solidity smart contracts (ERC-20/721/1155, DeFi, NFT collections), multi-chain dApps (presale, staking, launchpad), and Node.js backends (REST APIs, NestJS, PostgreSQL, AWS). EN & FR. Available 30+ hrs/week.

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