K
Kilo Verified

Founding Engineer (Travel Product)

Middle–Senior On-site Vilnius, Lithuania $4,650–5,800/mo Full-time Publicado hace 3 meses
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Sobre el puesto

Kilo is hiring a Founding Engineer at Middle to Senior level, based in its Vilnius, Lithuania office. You will work on Marlow AI, an AI-assisted travel planning platform, covering the traveler experience and the handoff to advisors who finalize and book trips.

Work format

This is a full-time position.

Skills and tools

  • React 19
  • TanStack Start
  • Supabase
  • PostgreSQL
  • TypeScript
  • Cloudflare Workers
  • OpenAI
  • Anthropic
  • OpenRouter

What to prepare

  • Prepare a feature walkthrough showing your decisions from schema design through release.
  • Bring a code sample demonstrating PostgreSQL access controls or TypeScript framework work.
  • Prepare an API integration example covering authentication, webhook handling and signature verification.

Responsabilidades

  • Own features from database design through server functions, UI, event tracking and production release.
  • Design and maintain PostgreSQL schemas, including row-level security policies and GRANTs.
  • Maintain flight, hotel, payment and subscription integrations, including authentication, webhooks and signature verification.
  • Build LLM-powered functionality with tool-calling, streaming and prompt iteration.
  • Deploy on Cloudflare Workers and manage server-rendering and client boundaries in TanStack Start.
  • Write tests, work with AI-agent dogfooding and contribute to architecture decisions.

Requisitos

  • Bring 3 to 7 years of production web application experience, including an early-stage startup.
  • Handle a feature from database migration to UI without engineering handoffs.
  • Have shipped work using Supabase, PostgreSQL RLS or pgvector, with an understanding of RLS and GRANTs.
  • Use TypeScript and have hands-on experience with Next.js, Remix, TanStack Start or SvelteKit.
  • Have integrated at least 10 third-party APIs.
  • Communicate with founders and cross-functional stakeholders about technical work.

Nice to have

  • LLM function calling, streaming and prompt versioning experience is nice to have.
  • Experience with edge runtimes or Workers is nice to have.
  • SQL window functions, CTEs and triggers are nice to have.
  • Exposure to supervised fine-tuning for AI is nice to have.

Postúlate a este puesto

Envía una breve presentación: el equipo de contratación la revisará y responderá.

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K
Kilo Verified
Product

Vilnius-based venture builder and co-founding partner, formerly known as Kilo Health, that funds, builds and scales digital health, wellness, beauty and longevity products such as Bioma and Pulsetto,

Ubicación
Vilnius, Lithuania
Tamaño del equipo
500+
Política de trabajo remoto
Hybrid
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Resumen

Seniority
Middle–Senior
Remote policy
Office
Location
Vilnius, Lithuania
Employment
Full-time
Salary
$4,650–5,800/mo
Posted
Aug 07, 2026

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