Hey, I'm Sigit

I'm a software engineer and indie maker based in Jakarta, Indonesia. For the past six years and counting, I've been building web products end to end, from the interface all the way down to the infrastructure, mostly with React, TypeScript, and Node.js.

I got into engineering for that moment an idea turns into something real that people actually use. That pull has taken me from early-stage Indonesian startups to one of the country's largest digital wallets, and to clients across the US and the rest of the world.

At LinkAja, a digital wallet serving more than eight million people, I spent close to five years on the Merchant and Loyalty teams. I architected the internal React UI-Kit that standardized how dozens of web products looked and shipped, built the merchant web portal and onboarding flow, and launched customer-facing webviews that millions of people touched inside the app.

Along the way I've worked with teams like Keller Williams (the world's largest real estate franchise), Sorabel, and a long list of Upwork clients, building everything from a full warehouse management system to design-system libraries, CMS platforms, and AI/LLM-powered SaaS.

These days I take on freelance full-stack work, and on the side I run my own small SaaS products: Clipnote, HookRelay, and Sumi. I like small bets with real users and my hands on the keyboard.

I care about craft: clean design systems, accessible interfaces, and code that's easy to live with. Lately a lot of my work is AI-augmented, pairing with Claude and Claude Code to move faster without cutting corners.