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

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Our mission is ambitious: enable anyone to live anywhere, anytime, without friction.

Powered by , our proprietary automation platform, we are building the operating system for modern renting—connecting property data, orchestrating operations, automating workflows, and enabling seamless stays across continents.

What You'll Build
As a Founding Software Engineer, you'll help architect and scale —the technology platform powering every aspect of The Flex.

You'll build internal products, automation engines, AI-powered workflows, integrations, and operational systems that eliminate manual work and allow the business to scale globally.

Your work will touch everything from guest journeys and property operations to pricing intelligence and AI-driven decision-making.

Your Mission
Build the Core Platform
Design and develop scalable applications, services,



and APIs that power bookings, pricing, payments, guest experiences, and operations.

Create Powerful Automations
Build event-driven workflows that automate tasks previously performed by humans.

Develop AI-Powered Systems
Leverage LLMs, AI agents, and machine intelligence to streamline operations, improve decision-making, and enhance customer experiences.

Design API-First Architecture
Create robust APIs that enable seamless communication between internal systems, third-party providers, and future products.

Integrate the Ecosystem
Build and maintain integrations with platforms including Airbnb, Hostaway, Stripe, Twilio, OpenAI, Google, and other strategic partners.

Scale Infrastructure
Deploy and manage cloud-native infrastructure designed for reliability, performance, and general growth.

Solve Complex Operational Problems
Build Solutions For

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- Real-time reservation synchronization
- Dynamic pricing

📌 Software Engineer (España)
🏢 The Flex
📍 España