§ 01Selected work

Work, in detail.

Four products. Each page says what I built, how it fits together and what I did not do, because the honest version is the useful one.

01Social trading · MobileLive on Google Play and the App Store

What it is: OpiGo is a Mumbai-based social trading platform. People share market opinions, create polls and follow stock-market insight from other traders.
My role: React Native developer
Engineering: Ship JavaScript without waiting on a store review · Notifications on more than one channel · Web and mobile stay in step
Stack: React Native · TypeScript · Firebase · Microsoft CodePush · Google Play · App Store

OpiGo

02Telecom · MobileLive on Google Play and the App Store

What it is: by.U is Indonesia's first all-digital telecom service, operated by Telkomsel. Ordering a SIM, choosing a number, building a plan and topping up all happen in the app.
My role: React Native developer
Engineering: Two platforms, one feel · Live account state · Continuous delivery
Stack: React Native · TypeScript · Firebase Cloud Messaging · OTA updates · Google Play · App Store

03Community finance · WebLive on Vercel

What it is: Collective Ledger runs the money of small savings communities. Members pay a monthly installment, the server works out any late fee, and the admin records what is invested, so every figure is something any member can check.
My role: Design and full-stack development
Engineering: Money in whole paise · Late fees as a server rule · Approval and election flows · Everything scoped to a community
Stack: Next.js (App Router) · React · TypeScript · Tailwind CSS · Zustand · Framer Motion · Recharts · Node.js · Express · MongoDB · Mongoose · JWT · Email one-time code · Vercel

04Classifieds marketplace · MobileDeveloped · not yet published

What it is: SELA is a mobile-first classifieds marketplace in the spirit of OLX. People buy, sell and trade products near them: they browse listings around their location, chat with the seller, and manage what they have posted.
My role: Sole React Native developer
Engineering: Performance on image-heavy lists · Location without exposing the seller · A short path to posting
Stack: React Native · GPS · Real-time chat · Image upload · Image caching