Full-Stack Engineer (Web & APIs)

The Flex · Posted 2026-01-29

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 BuildAs 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 MissionBuild the PlatformDevelop fast, reliable, and scalable web applications and APIs that power bookings, payments, availability, and guest experiences.Design API-First SystemsArchitect robust, well-documented APIs that connect Base360.ai to internal tools and external partners.Automate at ScaleBuild event-driven services and automated workflows that eliminate manual operations across the business.Connect the EcosystemDeliver high-impact integrations with partners such as Airbnb, Stripe, Hostaway, and Twilio.Deploy with ConfidenceShip and maintain serverless infrastructure on AWS, optimized for speed, resilience, and global scale.Solve Real ProblemsTackle real-time booking synchronization, pricing intelligence, keyless access logic, AI-powered alerts, and live operational dashboards.Build With PurposeCollaborate closely with product, data, and operations teams to turn ideas into measurable, real-world impact.🧠 You’re a Great Fit If You HaveStrong experience with FastAPI, React, and AWSA solid understanding of API-first architectures and distributed systemsA proven ability to build clean, scalable, production-ready web and API systemsCuriosity about automation, AI-driven operations, and property technologyA strong execution mindset — you ship fast, learn quickly, and enjoy solving complex problems🌍 Why You’ll Love Working HereReal-World ImpactYour work will power thousands of stays and help redefine a multi-trillion-pound industry.Small Team, Big OwnershipMinimal bureaucracy, high trust, and the chance to build foundational systems from day one.Rapid GrowthFast iteration, continuous learning, and a culture that values technical excellence.Performance-Based RewardsCompetitive compensation with meaningful upside for exceptional contributors.Remote-FirstWork from anywhere — we measure outcomes, not hours.🚫 This Role Is Not for You IfYou want a slow, predictable 9–5You prefer planning over building“Good enough” is your standardYou’re not committed to becoming elite in your craft

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