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$
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I will build an ai agent or rag system for your application
Kevin Ramadhan
About this gig
Hi, I'm Kevin, a senior software engineer with 7 years of backend experience, now specializing in building AI agents and RAG systems.
What I can build for you:
AI agents with tool use and multi-step reasoning
RAG systems for grounding AI responses in your own data
Custom chatbots and AI-powered features for your product
LLM integration into existing backend systems (Go, Node.js, TypeScript)
Recent work: I built CekHarga, an agentic AI tool that verifies whether a price is fair by autonomously searching the web and retrieving past checks via RAG, built with the Claude API. I tested it against a labeled evaluation set and documented a 74% accuracy rate with failure analysis, real rigor most AI side projects skip.
I combine 7 years of production backend experience with hands-on AI engineering, so what I build isn't just a demo, it's designed to run reliably in a real system.
I write clean, well-documented code and communicate clearly throughout the project. Send me your requirements and I'll get back to you with a clear plan.
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
FAQ
Do you only work with Claude, or can you use other LLMs like GPT or Gemini?
My proven experience is with the Claude API, but the underlying architecture (RAG, tool use, agent design) transfers across LLM providers. Message me with your requirements and I can confirm fit for your specific stack.
What exactly is a RAG system, and do I need one?
RAG (Retrieval-Augmented Generation) lets an AI answer using your own data instead of just its general training, useful if you need accurate, up-to-date, or domain-specific responses. If you're not sure your project needs it, message me and I can help you figure out the right approach.
Can you show proof this actually works, not just a demo?
Yes, I built CekHarga, an AI agent tested against a labeled evaluation set with a documented 74% accuracy rate and failure analysis. I can share the details and approach.
I have an existing app. Can you integrate AI into it without rebuilding everything?
Yes, that's a common request. I have 7 years of backend experience, so I can integrate AI features into your existing system rather than starting from scratch.
What if I'm not sure exactly what I need yet?
No problem, message me with a description of your idea or problem and I'll help scope it into something concrete before you order.
