Role Description We’re looking for a backend-heavy full-stack developer to partner with a design-first founder building custom software for service-industry clients. The current projects are mostly B2B workflow apps: - Dashboards - Intake flows - Technician/admin portals - QR-code-based forms - Status tracking - Photo/documentation workflows - Client-specific tools - Lightweight integrations The ideal person is a technical build partner who can: - Take a clear prototype and spec - Design the backend architecture - Build the Supabase infrastructure - Connect the frontend - Push back when something should be done differently The first engagement will likely start with a smaller QR-code workflow app for service companies, with potential to grow into larger projects and a long-term collaboration. Responsibilities - Design and build backend infrastructure using Supabase, PostgreSQL, Auth, RLS, Storage, Realtime, and Edge Functions. - Create clean database schemas with proper relationships, indexes, constraints, and migration planning. - Write secure Row Level Security policies for user-facing tables. - Set up authentication flows, permissions, sessions, and access logic where needed. - Build TypeScript/Deno Edge Functions for business logic, webhooks, scheduled jobs, and API integrations. - Integrate third-party tools such as Stripe, Twilio, OpenAI, SendGrid/Resend, Zapier/Make, or client-specific APIs. - Connect React/Tailwind frontends to the backend and help bridge the handoff between UI and infrastructure. - Review existing backend work and suggest improvements without overcomplicating the product. - Help turn prototypes into stable, scalable, production-ready applications. Qualifications - 3–6+ years of experience building production full-stack or backend-heavy web applications. - Deep hands-on experience with Supabase, including real shipped apps using RLS, Edge Functions, and Auth. - Strong PostgreSQL fundamentals: schema design, indexes, query optimization, constraints, and ability to read an EXPLAIN plan. - TypeScript / Node / Deno competence for building backend logic and Edge Functions. - Strong security instincts: RLS, input validation, permissions, and secrets management should be part of your default approach. - Clear written and spoken English for async handoff, documentation, and weekly Google Meet syncs. - Self-directed working style: able to take a spec doc and prototype, move independently, and surface questions in batches. - Strong communication skills, including the ability to explain tradeoffs and push back constructively when a better technical path exists. - A portfolio, case study, clickable prototype, or live/repo link that shows how you think and build. Nice to have - Experience with third-party API integrations such as Stripe, Twilio, OpenAI, SendGrid/Resend, Make/Zapier, or client-specific tools. - Comfort with React + Tailwind so you can help wire frontends to the backend. - Experience with service-industry tools, such as CRMs, scheduling systems, operations dashboards, intake forms, or field-service workflows. - A point of view on workflow and process design, including state flows, approval chains, dashboards, or operational logic. - Long-term, ongoing contractor relationship — not a one-off project. - Remote work, with LATAM timezone overlap preferred. - Flexible part-time setup: starting around a 20-hour monthly retainer, with potential to grow to 40–60 hours/month depending on fit and project flow. - High ownership and influence over technical direction. - Collaborative, low-bureaucracy environment.