Refilio
Solo — design, build & App Store release
An iOS trip-cost tracker that turns quick fill-up logs into a clear picture of driving habits and fuel spend — built and shipped end-to-end.
Available for select freelance work · Remote · GMT+8
Full-stack software engineer with 6+ years turning ideas into live products — from the frontend UI down to backend services, databases, media pipelines, and App Store releases. I own the whole thing, so you don't have to stitch it together.
7 products shipped for founders & startup teams
Worked with teams & founders at
Products I've designed, built, and shipped end-to-end — three are live on the App Store. Tap a featured project for the full case study.
Solo — design, build & App Store release
An iOS trip-cost tracker that turns quick fill-up logs into a clear picture of driving habits and fuel spend — built and shipped end-to-end.
Solo — design, build & App Store release
Teachers point their phone camera at bubble answer sheets for instant grading — plus class organization and student insights, powered by an on-device CV pipeline.
Full-stack engineer — real-time & AI
Real-time translation across web & mobile: join by QR, speak, and read each other instantly — speech-to-text, AI translation, live chat, and credit-based billing.
AI-assisted content platform for sermon clips, dubbing, downloads, and creator workflows.
Live transcription & streaming-support platform with real-time audio, text, and media workflows.
Web product contributions — UI implementation and product engineering across the stack.
Marketplace-style web product — user-facing flows, data handling, and ongoing development support.
Three ways teams bring me in — each owned end-to-end, from first pixel to production.
Native-feeling React Native / Expo apps — designed, built, tested on real devices, and shipped through App Store review. Three live so far.
End-to-end web apps in React or SvelteKit with Node / NestJS back ends, Postgres, Redis and clean deploys — UI down to the database, one owner.
The hard stuff: live transcription, dubbing, RTMP / FFmpeg pipelines, WebSocket streaming and AI workflows — built to stay up under real load.
I'm a full-stack engineer who likes owning a feature from the first pixel to the production deploy — so you get one person accountable for the result, not a relay race.
Over the last six years I've worked across startup teams and freelance engagements, shipping web and mobile products end-to-end — React & Svelte on the frontend, React Native / Expo on mobile, and Node.js / NestJS on the backend, all in TypeScript.
Lately I've been deep in creator-focused media tooling: live transcription, dubbing, RTMP / FFmpeg pipelines, real-time audio and text, and the cloud infrastructure that keeps it all running.
SermonShots / SermonLive
Creator tools for sermon clips, live transcription, dubbing, downloads & media workflows. Full-stack across SvelteKit, NestJS, PostgreSQL, Redis, WebSocket and RTMP / FFmpeg pipelines. Own product quality end-to-end.
Mamamia Inc.
Client-facing web features, UI improvements, bug fixes and third-party integrations — shipping production-ready updates under tight startup timelines.
Hibuddy
Marketplace-style features — frontend flows, data handling and user-facing improvements, with iterative performance work.
Skydev Solutions
Web apps, internal tools and client-facing features across frontend and backend, translating product requirements into reliable interfaces.
Twist Resources
Web & mobile features with ReactJS and React Native / Expo — reusable UI components, API integrations and mobile screens, with hands-on agile delivery and QA.
The stack I reach for, top to bottom.
✦ The bottom line
No hand-offs, no "that's a different team." Design, build, release, and the fixes after — owned by one person who's done it across web, mobile, and the App Store.
Hire meA few words from people I've shipped with. (Placeholders — swap in your real client quotes; see README.)
Mart owned the build from design to App Store release and just handled it — clear updates, shipped on time, and the quality held up on real devices.
He took a vague idea and came back with a working product. Owned the whole stack so we didn't have to coordinate three contractors.
Reliable on the hard real-time and media work where other devs stalled. Tested edge cases, reproduced the gnarly bugs, and validated before shipping.