At The Flex, we believe renting a home should be as simple as booking a ride.
ai, our proprietary technology platform, we are building the operating system for modern renting—automating operations, connecting systems, and creating seamless experiences for guests, landlords, and operators worldwide.
We're looking for a Full‑Stack Product Engineer who thrives at the intersection of product, engineering, and execution.
Build Products End‑to‑End — Take ideas from concept to production by designing, building, testing, and launching features that create measurable business impact.
Own Customer Problems — Work directly with founders and operational teams to understand challenges and transform them into elegant software solutions.
Connect External Systems — Build integrations with platforms such as Airbnb, Stripe, Hostaway, Twilio, Google, and OpenAI.




Python
FastAPI
React
TypeScript
PostgreSQL
AWS
Stripe
Twilio
GitHub Actions
Strong full‑stack development experience
Experience building production‑grade web applications
Strong understanding of APIs and databases
Experience with FastAPI
Experience with React and TypeScript
ai has become a stronger competitive advantage for The Flex
Why Join The Flex
Learn at Startup Speed — You'll work closely with founders and gain exposure to engineering, product, operations, AI, and business.
Remote‑First — Work from anywhere.
You avoid ownership outside your immediate responsibilities

📌 Full-Stack Product Engineer (España)
🏢 The Flex
📍 España