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Full-stack engineer (web & apis)

Liverpool (Merseyside)
Permanent
The Flex
Full stack engineer
Posted: 5 February
Offer description

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

* Build the Platform — Develop fast, reliable, and scalable web applications and APIs that power bookings, payments, availability, and guest experiences.
* Design API-First Systems — Architect robust, well-documented APIs that connect Base360.ai to internal tools and external partners.
* Automate at Scale — Build event-driven services and automated workflows that eliminate manual operations across the business.
* Connect the Ecosystem — Deliver high-impact integrations with partners such as Airbnb, Stripe, Hostaway, and Twilio.
* Deploy with Confidence — Ship and maintain serverless infrastructure on AWS, optimized for speed, resilience, and global scale.
* Solve Real Problems — Tackle real-time booking synchronization, pricing intelligence, keyless access logic, AI-powered alerts, and live operational dashboards.
* Build With Purpose — Collaborate closely with product, data, and operations teams to turn ideas into measurable, real-world impact.


You're a Great Fit If You Have

* Strong experience with Node.js, React, and AWS (serverless)
* A solid understanding of API-first architectures and distributed systems
* Experience with Python / FastAPI for automation or data services (bonus)
* A proven ability to build clean, scalable, production-ready web and API systems
* Curiosity about automation, AI-driven operations, and property technology
* A strong execution mindset — you ship fast, learn quickly, and enjoy solving complex problems


Why You’ll Love Working Here

* Real-World Impact — Your work will power thousands of stays and help redefine a multi-trillion-pound industry.
* Small Team, Big Ownership — Minimal bureaucracy, high trust, and the chance to build foundational systems from day one.
* Rapid Growth — Fast iteration, continuous learning, and a culture that values technical excellence.
* Performance-Based Rewards — Competitive compensation with meaningful upside for exceptional contributors.
* Remote-First — Work from anywhere — we measure outcomes, not hours.


This Role Is Not for You If

* You want a slow, predictable 9–5
* You prefer planning over building
* “Good enough” is your standard
* You’re not committed to becoming elite in your craft
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