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- Tasks: Design and build the core technology for a revolutionary renting platform.
- Company: Join The Flex, a forward-thinking company redefining global living.
- Benefits: Competitive pay, remote work, and a chance to shape the future.
- Why this job: Make a real impact by building systems that change how people rent homes.
- Qualifications: Experience in full-stack development and a passion for ownership.
- Other info: Fast-paced environment with opportunities for rapid growth and learning.
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.
- 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.
- 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.
- 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 in Belfast employer: The Flex
Contact Detail:
The Flex Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Founding Engineer in Belfast
✨Tip Number 1
Network like a pro! Reach out to people in the industry, attend meetups, and connect on LinkedIn. The more you engage with others, the better your chances of landing that Founding Engineer role.
✨Tip Number 2
Show off your skills! Build a portfolio showcasing your projects, especially those involving web apps, APIs, and cloud infrastructure. This will give potential employers a taste of what you can bring to the table.
✨Tip Number 3
Prepare for interviews by brushing up on your technical knowledge and problem-solving skills. Be ready to discuss how you've tackled ambiguity and taken ownership in past projects — that's what we love to see!
✨Tip Number 4
Apply through our website! It’s the best way to ensure your application gets noticed. Plus, it shows you're genuinely interested in being part of our mission to redefine global living.
We think you need these skills to ace Founding Engineer in Belfast
Some tips for your application 🫡
Show Your Passion: Let us see your enthusiasm for building and redefining the future of global living. Share your experiences that align with our mission and how you can contribute to making renting effortless.
Be Specific About Your Skills: When detailing your experience, focus on the technologies and systems you've worked with, especially Node.js, React, and AWS. We want to know how your skills will help us build the core technology from the ground up.
Emphasise Ownership: We love candidates who take ownership of their work. Highlight instances where you've made impactful decisions or taken charge of projects, showing us that you’re ready to own the stack and drive results.
Apply Through Our Website: Make sure to submit your application through our website. It’s the best way for us to receive your details and get you into our hiring process smoothly. We can’t wait to hear from you!
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 ownership mindset by discussing how you’ve tackled challenges and made architectural decisions in past roles.
✨Embrace Ambiguity
Since this role thrives on tackling ambiguity, come prepared with examples of how you've successfully navigated uncertain situations in previous jobs. Discuss how you approach problem-solving when requirements are not clearly defined, and demonstrate your ability to adapt and innovate.
✨Ask Insightful Questions
Prepare thoughtful questions that reflect 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 helps you gauge if the company is the right fit for you.
