At The Flex, we believe renting a home should be as effortless as booking a ride.

La siguiente información ofrece un resumen de las habilidades, cualidades y cualificaciones necesarias para este puesto.
Our mission is ambitious: enable anyone to live anywhere, anytime, without friction.
Powered by , our proprietary technology platform, we are building the operating system for modern renting—automating operations, connecting fragmented systems, and creating seamless experiences for guests, landlords, and operators across the world.
We’re looking for a Founding Software Engineer to help architect and build the technology that powers the future of The Flex.
This is not a typical engineering role.
You’ll work directly with the founder, influence product strategy, make architectural decisions, and build systems that become the foundation of a general business.
You’ll have extraordinary ownership, responsibility, and impact from day one.
What You’ll Build As a Founding Software Engineer, you’ll help create and scale —the technology platform that powers every aspect of The Flex.




From AI-powered workflows and booking systems to operational automation and intelligent decision-making, you’ll build products that directly impact revenue, efficiency, and customer experience.
You won’t just ship features.
You’ll create systems that replace manual work, unlock scale, and become a competitive advantage for the company.
Your Mission Build Core Products Design, build, and launch the software that powers bookings, pricing, payments, operations, communications, and guest experiences.
Architect the Platform Make key technical decisions and help define the long-term architecture of .
Create Automation at Scale Develop workflows and systems that automate operational processes across multiple countries and thousands of stays.
Leverage AI Build AI-powered tools, agents, and workflows that improve productivity, decision-making, and customer experience.
Integrate the Ecosystem Develop and mai

📌 Founding Software Engineer (España)
🏢 The Flex
📍 España