I will build scalable rest apis in spring express fastapi

J
jayashanka_2000
J
jayashanka_2000
Deshan J
build scalable rest apis in spring express fastapi
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build scalable rest apis in spring express fastapi

About this gig

Hi! I'm a backend development specialist with extensive expertise in building production-grade server-side applications, REST APIs, and scalable systems. Whether you need a simple API for your startup, a complex multi-database system, or a complete enterprise backend infrastructure, I deliver clean, efficient, thoroughly tested, and well-documented code that's ready to scale with your business.


WHY CHOOSE THIS GIG? Production-ready code built with industry best practices Expert in Spring Boot (Java), Express.js (Node.js), FastAPI (Python) & more Fast communication, transparent process & on-time delivery Comprehensive testing, optimization & documentation included Available for revisions, debugging & ongoing support Custom solutions tailored to your specific requirements Portfolio of successful projects delivered to startups & enterprises


SPECIALIZATIONS: REST & GraphQL API development Database design & optimization JWT & OAuth authentication Real-time WebSocket features Performance optimization & caching Docker & cloud deployment CI/CD pipelines Payment & email integration Comprehensive testing API documentation


  • Programming language

    • TypeScript

  • Expertise

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

  • Frontend framework

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

  • Backend framework

    • Express.js
    • FastAPI
    • Flask
    • Node.js
    • Spring

  • AI & low/no code builders

    • Lovable
    • Bolt.new
    • Cursor

Get to know Deshan J

Deshan J

FullStack Engineer

  • FromSri Lanka
  • Member sinceMar 2026

  • Languages

    English
👋 Hey! I'm Deshan, a Full-Stack Engineer & AI Integration Specialist from Sri Lanka with 2+ years of professional experience building scalable web applications and intelligent systems. I specialize in ReactJS, Spring Boot, Node.js, and MongoDB — and I go beyond traditional development by embedding LLMs, computer vision, and AI-powered APIs into real-world products. I've delivered production-grade apps, cut API response times by 20%, and integrated IoT pipelines in live business environments. Let's build something intelligent. Message me! 🚀

My Portfolio

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