Founding Engineer (Travel Product)

About the role

We are a fast‑scaling travel startup building Marlow AI, an AI‑assisted trip‑planning platform that hands off to human advisors for final booking. As a Founding Engineer you will be one of the first technical hires, shaping the architecture and delivering end‑to‑end features that power both traveler‑facing and advisor‑facing experiences.

Key responsibilities

• Design and implement full‑stack features from database schema through server functions, UI/UX, event tracking and production deployment.
• Develop and evolve Postgres schemas using Supabase, including Row‑Level Security policies and GRANTs.
• Integrate and maintain third‑party APIs for flights (Kiwi Tequila), hotels (Hotelston SOAP), payments (Primer, PayPal Marketplace) and subscriptions/leads (Kilo Launchpad), handling auth, webhooks and signature verification.
• Build LLM‑powered tooling within the orchestration layer, working with OpenAI, Anthropic and OpenRouter.
• Instrument events against a unified schema (view_item, add_to_cart, initiate_checkout, add_payment_info, payment_complete) to inform product and growth decisions.
• Deploy on Cloudflare Workers, making clear decisions about SSR vs. client rendering in TanStack Start.
• Write tests, dog‑food AI agents, and take ownership of ambiguous problems in a one‑engineer‑per‑feature environment.

Required profile

• 3–7 years of experience shipping production web applications, including at least one early‑stage startup (seed/Series A/B) as an early hire.
• Comfortable being the sole engineer on a feature, handling everything from DB migration to UI without external help.
• Hands‑on experience with Supabase, Postgres RLS, or pgvector and a clear understanding of why RLS + GRANT is essential.
• Native proficiency in TypeScript.

Required skills

• React 19
• TanStack Start
• Supabase (Postgres, RLS, GRANT)
• Cloudflare Workers
• PostgreSQL
• Kiwi Tequila API (flights)
• Hotelston SOAP API (hotels)
• Primer and PayPal Marketplace (payments)
• Kilo Launchpad (subscriptions/leads)
• OpenAI, Anthropic, OpenRouter (LLM integration)
• TypeScript
• pgvector