Full-stack developer (Next.js, TypeScript, Supabase)

Build features in a large Next.js and Supabase app that runs on Cloudflare.

• Freelance
• Remote
• Product and engineering
• Posted 26 Oct 2026

OIO is small and grows step by step. We read every application and get in touch when your role opens or a project fits.

OIO is one product with many parts: projects, tickets, documents, invoices, forms, file review. It is built with Next.js, TypeScript and Supabase (Postgres with row level security) and runs on Cloudflare. We need a developer who can ship careful, tested features into it.

What you would do

• Build features end to end: database migration, API route, UI
• Write row level security policies and tests for every new table
• Fix bugs reported by users, with a test that would have caught them
• Keep pages fast on phones and on slow connections

What we look for

• Production experience with Next.js App Router and TypeScript
• Postgres and Supabase, including row level security
• Habit of writing tests and reading code before changing it
• Nice to have: Cloudflare Workers, React Query, Stripe

How it works

• Apply with your GitHub or a project you built and your rate.
• If it fits, a short call, then a small paid task in the real codebase.
• Remote, async, per task or a set number of hours a week.

Pay

Your rate. Tell us what you charge when you apply; we agree it before any work starts.

OIO is small and grows step by step. We read every application and get in touch when your role opens or a project fits.