Founding Dev - Full Stack SAAS

Founding Dev — Full-Stack (TypeScript / Postgres / APIs) Type: 8-week paid contract → full-time Reports to: Founder What we're building A multi-tenant SaaS for SMB (Micro niche) in India. Businesses spend a lot per month on Meta and Google ads. The leads arrive on WhatsApp. Then they rot — nobody replies at 9pm, follow-up is a receptionist with a notebook, and most enquiries never become appointments. We handle the complete cycle from Running Ads to AI Lead Handling , AI Dead Leads Revival & Reporting Stack Decided, up for a rewrite: Next.js (App Router) + TypeScript Postgres via Supabase — RLS for tenant isolation Redis + BullMQ for queues and scheduled sends Docker, self-hosted on Hetzner Meta WhatsApp Cloud API, Meta Marketing API, Google Ads API Anthropic API for the qualification loop You will have opinions about parts of this. Bring them. But we are shipping on this stack. What you'll own Most of it. This is a two-person engineering team where the other person is the founder, who also has to sell. You will make architectural decisions alone and live with them. If that sounds stressful rather than appealing, this isn't the role. Must have 4+ years production TypeScript. Next.js App Router specifically — not "I've used React." Postgres at depth. RLS policies, index strategy, reading query plans, knowing why your query got slow. OAuth 2.0 implemented from scratch — authorisation code flow, refresh, revocation, and the failure modes. Queues in production — BullMQ, SQS, Celery, whatever. Retries, idempotency, dead letters, backoff. Webhook ingestion at volume — ordering, deduplication, replay. Multi-tenant data isolation. You have enforced it, and you can explain what breaks when you get it wrong. Strong plus Meta Graph / Marketing API, or Google Ads API (either — both is rare) WhatsApp Cloud API, especially Coexistence An LLM in production, handling real users, not a demo Worked on a team of 1–3 where you owned entire systems Built something that held other people's credentials and didn't leak them Not required Marketing domain knowledge. We'll teach you. A degree from anywhere in particular. Open source contributions. Nice, not necessary. Compensation Contract phase (8 weeks) Full-time, on conversion We convert at week 8 or we part ways cleanly. The contract is a real evaluation in both directions — you're assessing us too. Terms Code lives in our GitHub org from the first commit. Our Meta Business Manager, our Google MCC, our Supabase project, our Hetzner account. IP assignment signed before you start. You get full access to everything. We're not going to hire a senior engineer and then hide the codebase from them. Answers to these are MUST (Kindly DM / drop in comments here) Your GitHub, or code you can share One system you built that you're proud of, and one thing about it you'd do differently now Your availability and notice period We read every application. If your answers to questions 1–3 are good, we'll talk within a week. Please don't send a generic cover letter. The screening answers are the application. If they're good, nothing else matters much. If they're not, nothing else saves it.