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Backend Engineer – Full-time - Remote at The Flex. Remote Location: Paris. Reinvent how the world rents.. At . The Flex. , we believe renting a home should be as effortless as ordering an Uber.. Our mission: . make renting borderless, instant, and intelligent.. Through . Base360.ai. , our proprietary platform, we’re building the . digital nervous system. of the rental world — connecting property data, automating operations, and creating the intelligent infrastructure that powers every stay, everywhere.. We’re looking for a . Backend Engineer. who thrives on automation, scalability, and impact — someone who can turn complex real-world systems into elegant, self-sustaining software.. 💡 . What You’ll Build. As a . Backend Engineer. , you’ll design and scale the backbone of The Flex — the APIs, automations, and intelligence layers that connect global booking platforms, power predictive insights, and orchestrate real-world logistics.. Your work will bridge digital intelligence and physical operations — enabling thousands of seamless stays to happen automatically, without human intervention.. ⚙️ . Your Mission. Architect Core Systems. – Build scalable, high-performance APIs and backend services that drive global bookings, payments, and property data synchronization.. Automate Operations. – Create microservices and serverless functions that remove repetitive manual processes and enhance efficiency.. Integrate Intelligently. – Connect . Base360.ai. with platforms like Airbnb, Stripe, Twilio, and Hostaway through robust, maintainable integrations.. Design for Scale. – Build fault-tolerant, event-driven systems and data pipelines capable of handling millions of transactions across borders.. Enhance Intelligence. – Collaborate with AI and data teams to embed predictive automation into operational workflows.. Collaborate for Impact. – Partner with product, operations, and front-end teams to turn complex real-world challenges into clean, scalable backend solutions.. 🧠 . You’re a Great Fit If You Have. Strong experience with . Node.js. , . Python (FastAPI). , and . AWS. (serverless stack preferred).. Proven track record designing and scaling . API-first architectures.. Deep understanding of . databases. , . data synchronization. , and . event-driven systems.. Curiosity for . automation. , . AI. , and . real estate technology.. A . systems thinker. mindset — you design for resilience, not just function.. A . bias for action. — you thrive in fast-moving, high-accountability environments.. 🌍 . Why You’ll Love It Here. Massive Impact. – Your systems will power thousands of stays and automate the backbone of a $4T global industry.. Global Mission, Lean Team. – No bureaucracy. No silos. Just high performers moving fast.. Autonomy & Growth. – Own projects end-to-end and shape our technical roadmap.. Performance-Driven Rewards. – Competitive compensation and meaningful upside for top contributors.. Remote-First Culture. – Work from anywhere. We care about output, not office hours.. 🚫 . Do Not Apply If. You’re looking for a slow, predictable 9–5.. You prefer meetings over momentum.. You’re satisfied with average code and average results.. You’re not striving to operate in the . top 1%. of your craft.. #LI-Remote