Full-Stack Engineering Lead w Polska

About The Flex

At The Flex, we believe renting a home should be as effortless as booking a ride. Our mission is to enable anyone to live anywhere, anytime, without friction. Powered by https://jobeax.com/link/QuOzE4LoB1AVUUEg , 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.

The Role

We're looking for a Full-Stack Engineering Lead to help scale both our technology and our engineering culture. This is a hands-on leadership role. You'll spend the majority of your time building products, solving technical challenges, and architecting systems while also helping guide engineering standards, mentoring team members, and shaping the future of the platform.

Your Mission

• Lead Product Development : Design, build, and launch high-impact products that improve guest experience, operational efficiency, and business performance.
• Architect Scalable Systems : Make key technical decisions that ensure the platform remains scalable, reliable, and maintainable as the company grows internationally.
• Drive Engineering Excellence : Establish engineering best practices, code quality standards, development workflows, and technical documentation.
• Mentor and Support Engineers : Provide technical guidance, conduct code reviews, and help create a high-performance engineering culture focused on continuous improvement.
• Build Automation at Scale : Develop systems that eliminate manual work and allow operations to scale efficiently across multiple markets.
• Integrate Critical Platforms : Build and maintain integrations with platforms including Airbnb, Hostaway, Stripe, Twilio, Google, OpenAI, and other strategic partners.
• Leverage AI : Implement AI-powered workflows, tools, and agents that improve productivity and decision-making across the business.
• Collaborate Across Teams : Work closely with product, operations, revenue, and leadership teams to translate business challenges into scalable technical solutions.

Why Join The Flex

• Real Ownership : You'll have direct influence over technology strategy, architecture, and product direction.
• Build at Scale : Your work will power thousands of stays across multiple countries.
• Lead by Building : This is a hands-on role where you'll spend your time creating solutions, not sitting in meetings.
• Small Team, Massive Opportunity : Work closely with founders and help shape the future of both the platform and the engineering organization.
• Performance-Based Rewards : Competitive compensation with meaningful upside for exceptional performers.
• Remote-First : Work from anywhere. We care about impact, not hours worked.

Must Have

• Strong full-stack software engineering experience
• Experience designing and scaling production systems
• Strong understanding of APIs, databases, cloud infrastructure, and system architecture
• Experience leading technical projects from concept to deployment
• Excellent problem-solving and communication skills
• Ability to balance speed with engineering quality
• Strong ownership mentality and bias toward execution

Bonus Points

• Experience leading engineers or technical teams
• Startup or scale-up experience
• Experience with AI products or LLM integrations
• Experience with SaaS, marketplace, travel, or PropTech businesses
• Experience with FastAPI, React, AWS, or Supabase

Tech Stack

Our current stack includes: * Python * FastAPI * React * TypeScript * Supabase * PostgreSQL * AWS * OpenAI APIs * Stripe * Twilio * Docker * GitHub Actions