Lead Full-Stack Engineer in Belfast
Lead Full-Stack Engineer

Lead Full-Stack Engineer in Belfast

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

  • Tasks: Lead the architecture and development of a cutting-edge platform across web, APIs, and cloud.
  • Company: Join a dynamic tech team focused on innovation and autonomy.
  • Benefits: Competitive pay, remote work flexibility, and performance-based rewards.
  • Why this job: Shape impactful technology that scales globally while working hands-on with top-tier tools.
  • Qualifications: Strong experience in Node.js, React, AWS, and a passion for building scalable systems.
  • Other info: Enjoy a collaborative environment with high ownership and no corporate politics.

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

As a Lead Full-Stack Engineer, you will own the architecture and technical direction of The Flex platform — spanning web applications, APIs, automation engines, and cloud infrastructure. You’ll lead by building. You’ll design systems, set standards, and make key technical decisions while remaining deeply hands‑on across the stack. This is not a people‑management role. It’s a technical leadership role for someone who wants to shape systems, mentor by example, and build platforms that scale globally.

Your Mission

  • Own the Architecture — Define and evolve the technical architecture powering bookings, payments, availability, pricing, and guest experience.
  • Lead by Building — Deliver critical features end‑to‑end across frontend, backend, and infrastructure setting the bar for quality and speed.
  • Design API‑First Platforms — Architect scalable, well‑structured APIs that connect Base360.ai to internal tools and external partners.
  • Automate the Business — Build event‑driven services and intelligent workflows that replace manual operations across the company.
  • Integrate at Scale — Own and evolve deep integrations with platforms such as Airbnb, Stripe, Hostaway, and Twilio.
  • Ship with Confidence — Deploy and operate serverless infrastructure on AWS, ensuring reliability, security, and global performance.
  • Solve the Hard Stuff — Lead solutions for real‑time booking sync, pricing intelligence, keyless access logic, AI‑powered alerts, and live operational dashboards.
  • Raise the Bar — Establish best practices, review critical code, and mentor engineers through example and technical clarity.

You’re a Great Fit If You Have

  • Strong senior‑level experience with Node.js, React, and AWS (serverless)
  • Proven ownership of system architecture and complex distributed systems
  • Deep experience designing and scaling API‑first platforms
  • Experience with Python / FastAPI for automation or data services (bonus)
  • A history of building production‑grade systems used at real scale
  • High standards for code quality, reliability, and performance
  • A builder’s mindset — you execute fast, think long‑term, and enjoy responsibility

Why You’ll Love Working Here

  • Architect Real Impact — Your decisions will shape a platform used across cities and continents.
  • High Ownership, No Politics — Small, elite team with real autonomy and zero corporate drag.
  • Build From First Principles — You’ll help define not just features, but the foundation of the company’s technology.
  • Performance‑Based Rewards — Top‑of‑market compensation with meaningful upside for exceptional leaders.
  • Remote‑First — Work from anywhere — we care about leverage and outcomes, not hours.

This Role Is Not for You If

  • You want a management‑heavy role with little hands‑on work
  • You avoid making hard technical decisions
  • You’re uncomfortable owning systems end‑to‑end
  • “Good enough” is acceptable to you

Lead Full-Stack Engineer in Belfast employer: The Flex

As a Lead Full-Stack Engineer at our company, you'll thrive in a remote-first environment that champions high ownership and autonomy, allowing you to architect impactful solutions that span the globe. We foster a culture of innovation where your technical expertise will directly influence the foundation of our technology, supported by performance-based rewards that recognise exceptional contributions. Join a small, elite team that values quality and speed, and enjoy the freedom to build from first principles without the constraints of corporate politics.
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Contact Detail:

The Flex Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Lead Full-Stack Engineer in Belfast

✨Tip Number 1

Get your hands dirty! When you're applying for a technical role like Lead Full-Stack Engineer, it's crucial to showcase your practical skills. Build a small project or contribute to open-source; this not only sharpens your skills but also gives you something tangible to discuss in interviews.

✨Tip Number 2

Network like a pro! Connect with other engineers and tech leaders on platforms like LinkedIn or GitHub. Join relevant groups or forums where you can share your knowledge and learn from others. This can lead to referrals and insider info about job openings.

✨Tip Number 3

Prepare for technical interviews by practising coding challenges and system design questions. Use platforms like LeetCode or HackerRank to sharpen your problem-solving skills. Remember, the goal is to demonstrate your thought process and technical expertise during the interview.

✨Tip Number 4

Apply through our website! We love seeing candidates who are genuinely interested in joining us. Tailor your application to highlight how your experience aligns with our mission of building scalable systems and leading by example. Show us why you're the perfect fit!

We think you need these skills to ace Lead Full-Stack Engineer in Belfast

Node.js
React
AWS (serverless)
System Architecture
API Design
Distributed Systems
Python
FastAPI
Automation
Event-Driven Services
Code Quality
Reliability
Performance
Technical Leadership
Mentoring

Some tips for your application 🫡

Show Off Your Technical Skills: Make sure to highlight your experience with Node.js, React, and AWS in your application. We want to see how you've owned system architecture and tackled complex distributed systems in the past.

Be Specific About Your Achievements: When detailing your previous projects, focus on specific outcomes and metrics. We love to see how your contributions have made a real impact, especially in building production-grade systems.

Demonstrate Your Builder’s Mindset: Let us know about times when you executed quickly while thinking long-term. We’re looking for someone who enjoys taking responsibility and can lead by example, so share those experiences!

Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way for us to get your application and ensure it reaches the right people. Plus, we love seeing candidates who take that extra step!

How to prepare for a job interview at The Flex

✨Know Your Tech Stack Inside Out

Make sure you’re well-versed in Node.js, React, and AWS. Be ready to discuss your past projects and how you’ve used these technologies to solve complex problems. Prepare examples that showcase your hands-on experience and the impact of your technical decisions.

✨Demonstrate Your Architectural Vision

Be prepared to talk about system architecture and how you approach designing scalable, API-first platforms. Think about specific challenges you've faced in previous roles and how you overcame them. This is your chance to show how you can own the architecture and evolve it for future needs.

✨Showcase Your Problem-Solving Skills

Expect questions that test your ability to solve real-world problems, like booking syncs or pricing intelligence. Prepare to walk through your thought process and the steps you would take to tackle these challenges. Highlight your builder’s mindset and how you execute quickly while thinking long-term.

✨Emphasise Quality and Best Practices

Discuss your standards for code quality and how you ensure reliability and performance in your work. Be ready to share examples of how you’ve established best practices in your previous roles and how you mentor others through technical clarity. This will show that you’re not just a coder but a leader in the tech space.

Lead Full-Stack Engineer in Belfast
The Flex
Location: Belfast
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  • Lead Full-Stack Engineer in Belfast

    Belfast
    Full-Time
    36000 - 60000 ÂŁ / year (est.)
  • T

    The Flex

    50-100
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