Selected work
The problem
Small companies need one system for attendance, payroll and overtime — but most tools assume constant internet and one check-in method. This one had to run at a shared gate device, on employees' own phones, and keep working offline on both.
What I built
Three linked apps on one Supabase backend: an offline-capable attendance terminal (FaceScan or ID+PIN), an admin panel with live review and automatic payroll, and a self-service employee portal.
Challenges I solved
- Offline-first recording — check-ins save locally and sync automatically once the connection returns, so a dropped signal never costs a record.
- Automatic day-by-day payroll — a status-driven engine handles five owner-authorization states, auto-pays holidays and off-days, and applies a 2.0× overtime rate, recalculating live as records are reviewed.
- No reliable holiday API existed — built a simple import flow so an owner loads a full year of national holidays in seconds.
- A 7MB face-recognition model was too slow on weak mobile data — scoped FaceScan to the shared gate terminal only, and used a lightweight ID+PIN flow for personal devices.
The problem
Launching a video-editing service meant needing a marketing site, an intake flow, and a dashboard clients could log into to check project status — without paying for servers or a database before the business had its first client.
What I built
A 100% static, serverless site: a multi-step "free sample" request wizard, a code-based client portal, and a service agreement page — deployed on Cloudflare with no server to maintain.
Challenges I solved
- Client login without a backend — designed a lightweight client-code system so clients check project status with no database or auth server.
- A trust-first funnel — built the whole "sample first, pay later" journey end to end: request → free sample delivered → payment only after the client approves.
- Zero infrastructure cost — fully static, so it redeploys to any static host in minutes with nothing to keep running.
