Full-Stack Engineer (Web & APIs)

Company: The Flex

Location: Belfast

Posted: April 11th, 2026

At The Flex, we believe renting a home should feel instant, intelligent, and effortless — as seamless as booking a ride.

Our ambition is bold: enabling anyone to live anywhere, anytime, without friction.

Powered by Base360.ai, our proprietary automation engine, we are building the operating system for modern renting — connecting property data, orchestrating operations, and enabling seamless stays across continents.

If you’re energized by web platforms, API-driven systems, automation, and real-world scale, this is your opportunity to shape how millions of people move, live, and experience the world.

What You’ll Build

As a Full-Stack Engineer (Web & APIs), you will design, build, and scale the core web applications and APIs behind The Flex platform—powering instant bookings, intelligent access, automated workflows, and predictive operations.

You will work end-to-end across frontend interfaces, backend services, and cloud infrastructure, turning complex operational challenges into clean, scalable, API-first systems.

You won’t just ship features.

You’ll create leverage, unlock automation, and architect the foundation of an intelligent, global rental ecosystem.

Your Mission

You're a Great Fit If You Have

Why You’ll Love Working Here

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