The Flex
Founding Software Engineer
3w ago
EuropeSeniorRemoteaiautomationsoftware architecture
Founding Software Engineer responsible for architecting and building the core technology platform with significant ownership and impact.
About the company
- As one of the first engineers, your influence will extend beyond code. You'll help shape processes, culture, product direction, and the future engineering team.
Requirements
- Strong software engineering fundamentals
- Experience building production-grade applications
- Strong understanding of APIs, databases, and system design
- Product mindset and customer obsession
- Ability to work independently with minimal supervision
- Strong problem-solving ability
- High level of ownership and accountability
Nice to have
- Startup experience
- Experience with AI products or LLM integrations
- Experience building SaaS products
- Experience with FastAPI, React, AWS, or Supabase
- Marketplace, travel, or PropTech experience
Other
- At The Flex, we believe renting a home should be as effortless as booking a ride.
- Our mission is ambitious: enable anyone to live anywhere, anytime, without friction.
- Powered by Base360.ai , our proprietary technology platform, we are building the operating system for modern renting—automating operations, connecting fragmented systems, and creating seamless experiences for guests, landlords, and operators across the world.
- We're looking for a Founding Software Engineer to help architect and build the technology that powers the future of The Flex.
- This is not a typical engineering role.
- You'll work directly with the founder, influence product strategy, make architectural decisions, and build systems that become the foundation of a global business.
- You'll have extraordinary ownership, responsibility, and impact from day one.
- As a Founding Software Engineer, you'll help create and scale Base360.ai —the technology platform that powers every aspect of The Flex.
- From AI-powered workflows and booking systems to operational automation and intelligent decision-making, you'll build products that directly impact revenue, efficiency, and customer experience.
- You won't just ship features.
- You'll create systems that replace manual work, unlock scale, and become a competitive advantage for the company.
- Design, build, and launch the software that powers bookings, pricing, payments, operations, communications, and guest experiences.
- Make key technical decisions and help define the long-term architecture of Base360.ai .
- Develop workflows and systems that automate operational processes across multiple countries and thousands of stays.
- Build AI-powered tools, agents, and workflows that improve productivity, decision-making, and customer experience.
- Develop and maintain integrations with platforms including Airbnb, Hostaway, Stripe, Twilio, Google, OpenAI, and other strategic partners.
- Operate with urgency and ownership, turning ideas into production-ready solutions quickly and effectively.
- Work on challenges such as:
- Reservation synchronization
- Dynamic pricing
- Smart access management
- Guest communication automation
- Operational forecasting
- Maintenance and cleaning automation
- AI-powered alerts and monitoring
- Revenue optimization
- Our current stack includes:
- Python
- FastAPI
- React
- TypeScript
- Supabase
- PostgreSQL
- AWS
- OpenAI APIs
- Stripe
- Twilio
- Docker
- GitHub Actions
- We care more about your ability to learn and build than your experience with any specific technology.
- Within your first year:
- Critical company operations are automated through systems you've built
- Base360.ai becomes a core competitive advantage
- New products are shipped rapidly and reliably
- Engineering velocity increases significantly
- AI-powered workflows are embedded across the business
- The platform is ready to scale internationally
- Your work will directly shape how thousands of people live, travel, and experience cities.
- You'll have significant influence over product, technology, and company direction.
- Work closely with leadership and help define the future of the business.
- Gain exposure to engineering, AI, product, operations, growth, and company-building.
- Competitive compensation with meaningful upside for exceptional contributors.
- Work from anywhere. We care about results, not hours.
- You're looking for a predictable corporate environment
- You prefer maintaining systems rather than building them
- You need constant direction and supervision
- You avoid ownership outside your immediate responsibilities
- You are uncomfortable with change, ambiguity, and rapid execution
- If you're excited by building products, solving hard problems, leveraging AI, and helping create the operating system for modern renting, we'd love to hear from you.
- #LI-Remote