Senior Full-Stack Product Engineer

The Flex·Parissenior

In short

→Ingeniero full-stack senior que construye productos para operaciones de alquileres de corto plazo, desde interfaces hasta automatizaciones con IA.
→Trabajas en todo el ciclo: entender problemas reales, desarrollar soluciones y mejorarlas con datos de producción.
→Destacado: el producto está impulsado por operaciones reales de alquileres, con IA y automatización en el núcleo.

Experiencia previa trabajando en equipos internacionales o con clientes en inglés

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What they ask for

✓Experiencia probada en software de producción
✓Capacidad para trabajar en frontend y backend
✓Conocimiento de React, TypeScript, Python o tecnologías similares
✓Dominio de APIs, bases de datos e integraciones
✓Enfoque en resolver problemas reales de operaciones
✓Experiencia con sistemas event-driven y automatizaciones

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PythonFastAPIReactTypeScriptSupabasePostgreSQLAWSServerlessOpenAI APIsTwilio

Who should you write to at The Flex?

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ai is the AI operating system for short-term rental businesses, helping property managers run their operations on autopilot. ai is now launching as a standalone platform for short-term rental operators worldwide. We bring reservations, guest communication, pricing, payments, cleaning, maintenance, and reporting into one platform—helping operators automate manual work, reduce costs, increase revenue, and scale their portfolios. We're looking for an ambitious Senior Full-Stack Product Engineer who wants to turn real customer problems into intuitive, reliable software. You'll work closely with founders, designers, and operators to identify what matters, build solutions, and improve them based on how people use them. If you enjoy owning the full journey from customer problem to shipped product—and you're excited by AI, automation, and short-term rentals—we want to meet you. ai across the entire short-term rental lifecycle. You'll build customer-facing features, operational dashboards, automation engines, AI-powered workflows, and integrations that help property managers grow without increasing their workload at the same rate. Your work will connect what users see with the systems behind it—from a guest’s check-in experience to the workflows coordinating reservations, cleaning, payments, and owner reporting. Your Mission Understand Customer Problems Work directly with property managers and internal teams to understand their workflows, identify friction, and decide which problems are worth solving. Build Products End-to-End Take features from idea and prototype through frontend, backend, integrations, testing, and deployment. Own the complete experience and how it performs in production. Create Intuitive User Experiences Work with designers to make complex short-term rental operations easy to manage. Build interfaces that help users complete tasks quickly and confidently. Create Powerful Automations Build event-driven workflows that eliminate repetitive work—from scheduling cleaning after a booking to sending check-in instructions and generating owner statements. Develop AI-Powered Features Use LLMs and AI agents to automate guest communication, triage maintenance requests, support pricing decisions, and help operators manage their portfolios more efficiently. Connect the Ecosystem Build reliable APIs and integrations with platforms including Airbnb, Hostaway, Stripe, Twilio, OpenAI, Google, and other partners across the short-term rental ecosystem. Solve Real Operational Problems Build solutions for: Real-time reservation and availability synchronization Dynamic pricing intelligence Smart lock access and key management Automated guest communication across channels Guest check-in and upsell journeys Operational forecasting Cleaning and maintenance automation Owner reporting and financial workflows AI-powered monitoring and alerts Measure and Improve Use customer feedback, product usage, and operational results to evaluate what you ship. Improve features based on adoption, time saved, fewer errors, and better user outcomes. Build for Scale Make sound technical decisions that balance delivery speed, maintainability, security, and reliability as more operators and properties join the platform. Tech Stack We care more about capability than specific technologies, but our current stack includes: Python FastAPI React TypeScript Supabase PostgreSQL AWS Serverless architecture OpenAI APIs Twilio Stripe Docker GitHub Actions You Might Be a Great Fit If You Have Strong experience building and shipping production software The ability to work across frontend and backend systems Experience with React, TypeScript, Python, FastAPI, or similar technologies Strong understanding of APIs, databases, integrations, and clou

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