Founding Engineer

Founding Engineer

Full-Time 36000 - 60000 ÂŁ / year (est.) Home office possible
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At a Glance

  • Tasks: Design and build the core technology for a revolutionary renting platform.
  • Company: Join The Flex, a forward-thinking company transforming global living.
  • Benefits: Competitive pay, remote work, and significant growth potential.
  • Why this job: Make a real impact by shaping the future of renting.
  • Qualifications: Experience in building production systems and a passion for ownership.
  • Other info: Fast-paced environment with opportunities for rapid feedback and evolution.

The predicted salary is between 36000 - 60000 ÂŁ per year.

Join the team redefining the future of global living — from the ground up. At The Flex, we believe renting a home should feel instant, intelligent, and effortless — as seamless as booking a ride. Our ambition is bold: enabling anyone to live anywhere, anytime, without friction. Powered by Base360.ai, our proprietary automation engine, we’re building the operating system for modern renting — connecting property data, orchestrating operations, and enabling seamless stays across continents.

This is not a job where you “pick up tickets.” This is a chance to build a company’s technical foundation and define how a global platform operates at scale.

What You’ll Build
  • As a Founding Engineer, you will help design, build, and scale the core technology that The Flex is built on — from first principles.
  • You’ll work across product, engineering, and operations, owning systems end-to-end: web apps, APIs, automation pipelines, integrations, and cloud infrastructure.
  • You’ll make architectural decisions early — the kind that matter for years — and move fast to turn ideas into production systems used in the real world.

If you enjoy ambiguity, ownership, and building things that actually ship, this role is for you.

Your Mission
  • Build from Zero to One: Design and implement the initial architecture powering bookings, payments, availability, and guest experience.
  • Own the Stack: Build across frontend, backend, APIs, and cloud infrastructure — choosing tools and patterns that scale.
  • Automate the Business: Replace manual processes with event-driven workflows and intelligent automation from day one.
  • Integrate the Ecosystem: Build deep integrations with platforms such as Airbnb, Stripe, Hostaway, and Twilio.
  • Ship Relentlessly: Deploy, monitor, and iterate on production systems with speed, reliability, and pragmatism.
  • Solve Real-World Problems: Tackle real-time booking sync, pricing intelligence, keyless access logic, AI-powered alerts, and operational dashboards.
  • Set the Technical DNA: Establish engineering standards, best practices, and a culture of quality, ownership, and execution.
You’re a Great Fit If You Have
  • Strong experience building production systems (full-stack or backend-heavy).
  • Comfort working across web apps, APIs, and cloud infrastructure.
  • Experience with Node.js, React, and AWS (or equivalent stacks).
  • Familiarity with Python / FastAPI for automation or data services (bonus).
  • A bias toward shipping over perfection.
  • High tolerance for ambiguity and changing requirements.
  • An ownership mindset — you treat the product like it’s yours.
Why You’ll Love Working Here
  • Foundational Impact: Your work will define how the company operates for years to come.
  • Extreme Ownership: You won’t just influence decisions — you’ll make them.
  • Fast Feedback Loop: What you build goes live, gets used, and evolves quickly.
  • Meaningful Upside: Competitive compensation with strong upside aligned to long-term success.
  • Remote-First: Work from anywhere — autonomy and trust are core to how we operate.
This Role Is Not for You If
  • You want well-defined requirements and rigid processes.
  • You avoid responsibility for production systems.
  • You prefer specialization over ownership.
  • You’re optimizing for comfort instead of impact.

Founding Engineer employer: The Flex

At The Flex, we are not just redefining global living; we are creating a culture of innovation and ownership where every Founding Engineer has the opportunity to shape the future of our platform. With a remote-first approach, competitive compensation, and a commitment to meaningful work, you will be empowered to make impactful decisions and see your contributions come to life in real-time. Join us to build a seamless renting experience that connects people across the globe while enjoying the autonomy and trust that define our work environment.
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Contact Detail:

The Flex Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Founding Engineer

✨Tip Number 1

Network like a pro! Reach out to people in the industry, attend meetups, and connect with potential colleagues on LinkedIn. We all know that sometimes it’s not just what you know, but who you know that can help you land that dream job.

✨Tip Number 2

Show off your skills! Create a portfolio or GitHub repository showcasing your projects and contributions. This is your chance to demonstrate your technical prowess and passion for building things from scratch — just like we do at The Flex!

✨Tip Number 3

Prepare for those interviews! Research common questions for Founding Engineer roles and practice your responses. We want to see how you think and solve problems, so be ready to discuss your past experiences and how they relate to the role.

✨Tip Number 4

Apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows you’re genuinely interested in being part of our mission to redefine global living — and we love that!

We think you need these skills to ace Founding Engineer

Full-Stack Development
Backend Development
Web Applications
APIs
Cloud Infrastructure
Node.js
React
AWS
Python
FastAPI
Automation
Event-Driven Workflows
Integration with Third-Party Platforms
Production System Deployment
Problem-Solving

Some tips for your application 🫡

Show Your Passion: Let us see your enthusiasm for building and innovating! Share specific examples of projects you've worked on that align with our mission to redefine global living. We want to know what drives you!

Tailor Your Application: Make sure your application speaks directly to the role of Founding Engineer. Highlight your experience with full-stack development, cloud infrastructure, and any relevant technologies like Node.js and React. We love seeing how your skills fit into our vision!

Be Authentic: Don’t be afraid to show your personality! We value authenticity and want to get to know the real you. Share your thoughts on tackling ambiguity and how you approach ownership in your projects.

Apply Through Our Website: We encourage you to apply through our website for a smoother process. It helps us keep track of applications and ensures you don’t miss out on any important updates. Let’s build something amazing together!

How to prepare for a job interview at The Flex

✨Understand the Company Vision

Before your interview, dive deep into The Flex's mission and values. Familiarise yourself with their approach to redefining global living and how they aim to make renting seamless. This will help you align your answers with their vision and show that you're genuinely interested in being part of their journey.

✨Showcase Your Technical Skills

Be ready to discuss your experience with full-stack development, particularly with Node.js, React, and AWS. Prepare specific examples of projects where you've built production systems or automated processes. Highlight your problem-solving skills by discussing real-world challenges you've tackled in previous roles.

✨Embrace Ambiguity

Since this role requires a high tolerance for ambiguity, be prepared to discuss how you've navigated uncertain situations in the past. Share examples of how you've taken ownership in projects with changing requirements and how you adapted your approach to ensure success.

✨Ask Insightful Questions

Prepare thoughtful questions that demonstrate your understanding of the role and the company. Inquire about their current tech stack, the challenges they face in scaling, or how they envision the integration with platforms like Airbnb and Stripe. This shows your enthusiasm and strategic thinking.

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