I will build backend systems, web apps, and mobile apps

V
vinrsr
V
vinrsr
Kevin Ramadhan
build backend systems, web apps, and mobile apps
Full Screen
build backend systems, web apps, and mobile apps
Full Screen
build backend systems, web apps, and mobile appsbuild backend systems, web apps, and mobile apps

About this gig

Hi, I'm Kevin, a senior software engineer with 7 years of experience building backend systems, web applications, and API integrations for fintech and SaaS companies.


What I can build for you:


Backend APIs and microservices (Go, Node.js, TypeScript)

Full-stack web applications (Next.js, React)

Database design and integration (PostgreSQL, MySQL, Redis)

AI agent and RAG integrations using the Claude API


Some of my recent work:


Built loan approval systems processing thousands of applications, cutting approval time from 7 days to 2

Designed RBAC systems and event-driven pipelines used across multiple production platforms

Built CekHarga, an AI agent that verifies pricing fairness using live web search and RAG, tested against a labeled evaluation set


I write clean, well-documented, production-ready code and communicate clearly throughout the project, from requirements to delivery. Whether you need a single API endpoint or a complete backend system, I'll make sure it's built right the first time.


Send me a message with your project details and I'll get back to you quickly.


  • Programming language

    • Go

  • Expertise

    • Performance
    • Security
    • Design
    • Databases
    • Testing procedures

  • Frontend framework

    • Flutter
    • Next.js
    • React.js
    • Tailwind CSS
    • Three.js

  • Backend framework

    • Express.js
    • Gin
    • Node.js

  • AI & low/no code builders

    • Claude

Get to know Kevin Ramadhan

Kevin Ramadhan

Senior Software Engineer and AI Engineer

  • FromIndonesia
  • Member sinceFeb 2023
  • Avg. response time1 hour

  • Languages

    English
Hi, I'm Kevin, a senior software engineer with 7 years of experience building high-performance backend systems and distributed architectures for fintech and SaaS companies. I specialize in Go and TypeScript, with hands-on experience designing microservices, event-driven pipelines, and scalable database systems, taking complex features from design to production. Recently I've expanded into AI-integrated systems, building multi-step AI agents with RAG and evaluation pipelines. I care about clean, production-ready code and clear communication. Let's talk about what you're building.

My Portfolio

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