{"id":82559,"title":"Senior Software Engineer","company":"The Flex","city":"Berlin","region":"Berlin","location":"Germany, Berlin, Berlin, Germany","work_model":"remote","employment_type":"full_time","employment":["full_time"],"roles":["software"],"visa":"not_mentioned","relocation":"not_mentioned","posted_at":"2026-09-23T11:14:10.266000+00:00","tools":["LLM","Stripe","OpenAI API","Python","FastAPI","React","TypeScript","Supabase"],"seniority":"senior","years_experience_min":null,"german_requirement":"not_mentioned","german_level":"unspecified","english_requirement":"required","english_level":"unspecified","team_language":"unknown","confidence":0.4,"method":"rules","language_badge":"Not stated","language_evidence":null,"requirements_snippet":null,"url":"https://jobs.ashbyhq.com/the-flex/d9457005-2ae9-410f-8fe7-164ff0ad1840","source":"ashby","agency":null,"description_text":"About Us\nBase360.ai is the AI operating system for short-term rental businesses, helping property managers run their operations on autopilot.\nBorn out of The Flex, a short-term rental operator that scaled to an eight-figure business using its own software, Base360.ai is now launching as a standalone platform for short-term rental operators worldwide.\nWe 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.\nWe're looking for a highly ambitious Senior Software Engineer who wants to build systems that solve real problems at scale. You'll build, ship, automate, and deliver products that directly impact property managers, their teams, and their guests.\nIf you're excited by APIs, automation, AI agents, cloud infrastructure, and building products from the ground up, we want to meet you.\n\nWhat You'll Build\nAs a Senior Software Engineer, you'll help architect and scale Base360.ai—the platform powering every aspect of a short-term rental business.\nYou'll build customer-facing products, automation engines, AI-powered workflows, integrations, and operational systems that help property managers grow without increasing their workload at the same rate.\nYour work will span the entire short-term rental lifecycle: from listing distribution, pricing, and bookings to guest stays, property operations, and financial reporting.\n\nYour Mission\nBuild the Core Platform\nDesign and develop scalable applications, services, and APIs that power reservations, availability, pricing, payments, guest experiences, and property operations.\nCreate Powerful Automations\nBuild event-driven workflows that eliminate repetitive work—from scheduling cleaning after a booking to sending check-in instructions and generating owner statements.\nDevelop AI-Powered Systems\nUse LLMs and AI agents to automate guest communication, triage maintenance requests, support pricing decisions, and help operators manage their portfolios more efficiently.\nDesign API-First Architecture\nCreate robust APIs that connect internal services, booking channels, third-party providers, and customer systems.\nIntegrate the Ecosystem\nBuild and maintain integrations with platforms including Airbnb, Hostaway, Stripe, Twilio, OpenAI, Google, and other strategic partners across the short-term rental ecosystem.\nScale Infrastructure\nDeploy and manage cloud-native infrastructure designed for reliability, performance, and global growth across multiple property management businesses.\nSolve Complex Operational Problems\nBuild solutions for:\n• Real-time reservation and availability synchronization\n• Dynamic pricing intelligence\n• Smart lock access and key management\n• Automated guest communication across channels\n• Operational forecasting\n• Cleaning and maintenance automation\n• Owner reporting and financial workflows\n• AI-powered monitoring and alerts\n\nMove Fast and Own Delivery\nOwn projects end-to-end—from understanding an operator’s problem to architecture, implementation, deployment, and ongoing improvement.\nBring senior engineering judgment to technical decisions, code reviews, and the reliability of the systems you build.\n\nTech Stack\nWe care more about capability than specific technologies, but our current stack includes:\n• Python\n• FastAPI\n• React\n• TypeScript\n• Supabase\n• PostgreSQL\n• AWS\n• Serverless architecture\n• OpenAI APIs\n• Twilio\n• Stripe\n• Docker\n• GitHub Actions\n\nYou Might Be a Great Fit If You Have\n• Strong experience building and owning production-grade software systems\n• Experience with FastAPI, Python, React, or similar frameworks\n• Strong understanding of APIs, distributed systems, and cloud architecture\n• Experience designing scalable backend systems and reliable data models\n• The ability to work independently and make sound technical decisions\n• Strong problem-solving skills and a product mindset\n• Curiosity about AI, automation, and operational efficiency\n• A bias toward action, shipping, and learning from real users\n• The ability to balance delivery speed with maintainability and reliability\n\nBonus points for experience with:\n• Short-term rentals, hospitality technology, or property management systems\n• Multi-tenant SaaS platforms\n• Marketplace businesses and booking channel integrations\n• AI agents and workflow automation\n• Event-driven architectures\n• Supabase\n• AWS serverless infrastructure\n\nWhat Success Looks Like\nWithin your first 12 months:\n• Core short-term rental workflows are automated through systems you've built\n• Property managers spend less time on manual administration\n• Reservations, availability, payments, and operational data move reliably between systems\n• New integrations are deployed and maintained reliably\n• AI-powered workflows become part of customers’ everyday operations\n• The platform supports more operators and properties while maintaining reliability and performance\n• Base360.ai helps customers grow their portfolios, improve guest experiences, and operate more profitably\n\nWhy Join Us\nBuild Something Meaningful\nSolve problems experienced daily by short-term rental operators, with direct access to The Flex’s operations to test ideas and see their impact.\nExtreme Ownership\nHave the freedom and responsibility to make technical decisions and deliver systems that matter.\nSmall Team, Massive Opportunity\nWork closely with the founders and directly influence the product and technical direction of Base360.ai.\nLearn Faster\nSolve real-world challenges across software, AI, automation, hospitality operations, and scale.\nPerformance-Based Rewards\nCompetitive compensation with substantial upside for exceptional performers.\nRemote-First\nWork from anywhere. We care about outcomes, not hours.\n\nThis Role Is Not For You If\n• You're looking for a slow-paced corporate environment\n• You prefer a narrowly defined role with limited product involvement\n• You need detailed instructions for every task\n• You avoid ownership and accountability\n• You're comfortable shipping work without taking responsibility for its quality\n\nWe're looking for someone who wants to help build the AI operating system for the short-term rental industry.\n#LI-Remote","responsibilities_text":"Build the Core Platform\nDesign and develop scalable applications, services, and APIs that power reservations, availability, pricing, payments, guest experiences, and property operations.\nCreate Powerful Automations\nBuild event-driven workflows that eliminate repetitive work—from scheduling cleaning after a booking to sending check-in instructions and generating owner statements.\nDevelop AI-Powered Systems\nUse LLMs and AI agents to automate guest communication, triage maintenance requests, support pricing decisions, and help operators manage their portfolios more efficiently.\nDesign API-First Architecture\nCreate robust APIs that connect internal services, booking channels, third-party providers, and customer systems.\nIntegrate the Ecosystem\nBuild and maintain integrations with platforms including Airbnb, Hostaway, Stripe, Twilio, OpenAI, Google, and other strategic partners across the short-term rental ecosystem.\nScale Infrastructure\nDeploy and manage cloud-native infrastructure designed for reliability, performance, and global growth across multiple property management businesses.\nSolve Complex Operational Problems\nBuild solutions for:\n• Real-time reservation and availability synchronization\n• Dynamic pricing intelligence\n• Smart lock access and key management\n• Automated guest communication across channels\n• Operational forecasting\n• Cleaning and maintenance automation\n• Owner reporting and financial workflows\n• AI-powered monitoring and alerts\nMove Fast and Own Delivery\nOwn projects end-to-end—from understanding an operator’s problem to architecture, implementation, deployment, and ongoing improvement.\nBring senior engineering judgment to technical decisions, code reviews, and the reliability of the systems you build.\nTech Stack\nWe care more about capability than specific technologies, but our current stack includes:\n• Python\n• FastAPI\n• React\n• TypeScript\n• Supabase\n• PostgreSQL\n• AWS\n• Serverless architecture\n• OpenAI APIs\n• Twilio\n• Stripe\n• Docker\n• GitHub Actions\nYou Might Be a Great Fit If You Have\n• Strong experience building and owning production-grade software systems\n• Experience with FastAPI, Python, React, or similar frameworks\n• Strong understanding of APIs, distributed systems, and cloud architecture\n• Experience designing scalable backend systems and reliable data models\n• The ability to work independently and make sound technical decisions\n• Strong problem-solving skills and a product mindset\n• Curiosity about AI, automation, and operational efficiency\n• A bias toward action, shipping, and learning from real users\n• The ability to balance delivery speed with maintainability and reliability\nBonus points for experience with:\n• Short-term rentals, hospitality technology, or property management systems\n• Multi-tenant SaaS platforms\n• Marketplace businesses and booking channel integrations\n• AI agents and workflow automation\n• Event-driven architectures\n• Supabase\n• AWS serverless infrastructure\nWhat Success Looks Like\nWithin your first 12 months:\n• Core short-term rental workflows are automated through systems you've built\n• Property managers spend less time on manual administration\n• Reservations, availability, payments, and operational data move reliably between systems\n• New integrations are deployed and maintained reliably\n• AI-powered workflows become part of customers’ everyday operations\n• The platform supports more operators and properties while maintaining reliability and performance\n• Base360.ai helps customers grow their portfolios, improve guest experiences, and operate more profitably","requirements_text":null,"status":"open","duplicate_of":null,"first_seen":"2026-11-04T00:21:40.017792+00:00","responsibilities_summary":null,"requirements_summary":null,"all_tools":["LLM","Stripe","OpenAI API","Python","FastAPI","React","TypeScript","Supabase","PostgreSQL","AWS","Docker","GitHub Actions","GitHub"],"posting_language":"en","evidence":[],"years_experience_max":null,"mobility_evidence":[],"model_version":"rules-8","english_badge":"English required","company_id":2466}