Full Stack Engineer in City of London

Full Stack Engineer in City of London

City of London Full-Time 28000 - 40000 ÂŁ / year (est.) No home office possible
I

At a Glance

  • Tasks: Build and ship features for a live mobile app and backend platform.
  • Company: Join Staxy, an innovative tech startup at the intersection of sport and location data.
  • Benefits: Competitive salary, equity options, flexible working, and growth opportunities.
  • Why this job: Make a real impact on a growing product with engaged customers.
  • Qualifications: 2-3 years of development experience, JavaScript/TypeScript knowledge, and a desire to learn.
  • Other info: Dynamic environment with clear progression and mentorship opportunities.

The predicted salary is between 28000 - 40000 ÂŁ per year.

Flexible Hybrid (London)

ÂŁ35k-ÂŁ50k + Equity

High Ownership, Real Product, Real Impact

The opportunity

If you’re a developer with a couple of years under your belt and you’re starting to look for more ownership, more responsibility, and faster growth, this is a rare opportunity to join at exactly the right moment. Staxy are at a stage where the product is live, customers are engaged, and the technical challenges are only getting more interesting. What they need now is someone who’s excited to step up, learn fast, and grow alongside the company.

Who are Staxy?

Staxy is an early-stage technology startup building products that sit at the intersection of sport, location data, and real-world behaviour. They work with organisations to better understand how people move, engage, and interact with physical spaces, using mobile technology, location data, and analytics to generate meaningful insight. They’re already live with Aston Villa as a cornerstone client, have secured VC funding, and are seeing strong pull from customers who are actively asking them to expand the product. Backed by an experienced board with deep roots in sport and commercial leadership, Staxy are well past the “idea stage” and firmly into building and scaling.

The role

This is a full stack developer role with genuine ownership. You’ll work closely with the CTO, and other founders, and will be involved across the full product lifecycle, from shaping features through to shipping them.

Day to day, you’ll be:

  • Building and shipping features across a mobile application and backend platform
  • Working end-to-end, not just on isolated tickets
  • Collaborating directly with the CTO on product priorities
  • Taking ownership of smaller features early on, and growing into larger features and technical decisions over time

You won’t be micromanaged, and you won’t be siloed. The expectation isn’t that you know everything, it’s that you’re curious, proactive, and keen to learn.

The technology

You’ll be working with a modern, pragmatic stack:

  • Mobile / Frontend: React Native, TypeScript
  • Backend: Node.js (Fastify or similar)
  • Data: MongoDB
  • APIs: RESTful services and mobile-to-server communication
  • Other: Mapping / location-based services

There’s also scope to get involved in machine learning over time. Staxy already use ML to process GPS data and understand travel behaviour, and this will become a bigger focus as the platform evolves. You don’t need ML experience right now, interest and curiosity are enough.

Key responsibilities

  • Build and ship features across the mobile app and backend
  • Develop and consume REST APIs
  • Write clean, maintainable TypeScript
  • Work closely with the CTO on technical decisions and implementation
  • Take increasing ownership of functionality as you grow
  • Contribute ideas and improvements as the platform evolves

What we’re looking for

Must have:

  • Around 2–3 years’ experience as a developer
  • Good working knowledge of JavaScript / TypeScript
  • Experience building and shipping real features (ideally mobile)
  • Some exposure to Node.js and backend development
  • A genuine curiosity and desire to learn

Nice to have:

  • React Native / Expo experience
  • MongoDB
  • Fastify or similar Node frameworks
  • Mapping or location-based services
  • Payments (e.g. Stripe)
  • Any exposure or interest in machine learning

Growth & progression

Because the team is small and early-stage, this is a role where progression is earned, not capped. As Staxy grow, there will be clear opportunities to:

  • Own larger areas of the product
  • Influence technical direction
  • Mentor future hires
  • Step into more senior or lead-style responsibilities over time

If you want a role where you can look back in 12–18 months and clearly see how far you’ve come, this is that environment.

Package

Base salary of between ÂŁ35-ÂŁ50k (A little flexibility depending on experience)

Meaningful equity options, offering genuine long-term upside as the company grows

Pensions contributions

Flexible working

The chance to work on a live, growing product with real users

Interested?

If you’re a developer ready to step up, learn fast, and build something that’s already gaining real traction, we’d love to hear from you! Apply now or get in touch to find out more.

Full Stack Engineer in City of London employer: ISL Talent

Staxy is an exceptional employer for Full Stack Engineers, offering a dynamic and flexible hybrid work environment in London. With a strong focus on employee growth, you will have the opportunity to take ownership of projects, collaborate closely with experienced leaders, and influence the technical direction of a live product that is making a real impact in the sports and location data sectors. The company fosters a culture of curiosity and learning, providing meaningful equity options and a clear path for career progression as it continues to scale.
I

Contact Detail:

ISL Talent Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Full Stack Engineer in City of London

✨Tip Number 1

Network like a pro! Reach out to people in your industry on LinkedIn or at local meetups. You never know who might have the inside scoop on job openings or can put in a good word for you.

✨Tip Number 2

Show off your skills! Create a portfolio showcasing your projects, especially those that align with what Staxy is doing. This will give you an edge and demonstrate your hands-on experience.

✨Tip Number 3

Prepare for interviews by practising common technical questions and coding challenges. We recommend using platforms like LeetCode or HackerRank to sharpen your skills before the big day.

✨Tip Number 4

Don’t forget to apply through our website! It’s the best way to ensure your application gets seen. Plus, it shows you’re genuinely interested in joining the team at Staxy.

We think you need these skills to ace Full Stack Engineer in City of London

JavaScript
TypeScript
React Native
Node.js
Fastify
MongoDB
REST APIs
Mobile Application Development
Curiosity
Proactivity
Collaboration
Problem-Solving
Machine Learning Interest
Mapping Services

Some tips for your application 🫡

Show Your Passion: When writing your application, let your enthusiasm for the role shine through! We want to see that you're genuinely excited about the opportunity to work with us at Staxy and contribute to our innovative projects.

Tailor Your CV: Make sure to customise your CV to highlight relevant experience that aligns with the job description. Focus on your skills in JavaScript, TypeScript, and any exposure to Node.js or mobile development, as these are key for us.

Be Clear and Concise: Keep your application straightforward and to the point. We appreciate clarity, so avoid jargon and make it easy for us to see how your experience fits the role. A well-structured application goes a long way!

Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you don’t miss out on any important updates from our team!

How to prepare for a job interview at ISL Talent

✨Know Your Tech Stack

Make sure you’re familiar with the technologies mentioned in the job description, like React Native, TypeScript, and Node.js. Brush up on your knowledge of RESTful APIs and MongoDB, as these will likely come up during technical discussions.

✨Show Your Curiosity

Staxy values a genuine curiosity and desire to learn. Prepare examples of how you've tackled challenges in the past or learned new technologies. This will demonstrate your proactive attitude and eagerness to grow within the role.

✨Prepare for Ownership Questions

Since this role involves taking ownership of features, be ready to discuss your previous experiences where you’ve taken initiative. Think about specific projects where you contributed significantly and how you managed responsibilities.

✨Engage with Their Vision

Research Staxy and their product offerings. Be prepared to discuss how you can contribute to their mission of using technology to understand real-world behaviour. Showing that you align with their goals will set you apart from other candidates.

Full Stack Engineer in City of London
ISL Talent
Location: City of London

Land your dream job quicker with Premium

You’re marked as a top applicant with our partner companies
Individual CV and cover letter feedback including tailoring to specific job roles
Be among the first applications for new jobs with our AI application
1:1 support and career advice from our career coaches
Go Premium

Money-back if you don't land a job in 6-months

I
Similar positions in other companies
UK’s top job board for Gen Z
discover-jobs-cta
Discover now
>