Full Stack Engineer in City of London

Full Stack Engineer in City of London

City of London Full-Time 36000 - 60000 £ / year (est.) No home office possible
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At a Glance

  • Tasks: Design and build secure, scalable components for a cutting-edge fintech platform.
  • Company: Join Accountabl, a modern expense management platform revolutionising business spending.
  • Benefits: Enjoy competitive salary, hybrid work, and opportunities for professional growth.
  • Why this job: Make a real impact by shaping the future of fintech with your code.
  • Qualifications: 2-4 years in software development with strong JavaScript/TypeScript skills.
  • Other info: Collaborative environment with ownership over meaningful projects and career advancement.

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

Accountabl is building a modern expense management platform for growing companies, combining smart corporate cards, automated expense capture, and real-time financial controls into one seamless platform. We build fintech infrastructure that powers how businesses spend, track, and control. As we scale, platform reliability, performance, and thoughtful engineering are critical to delivering a seamless experience.

This is a full-time, hybrid role based in London. You’ll work closely with the Technical Lead and Product Team to build, maintain, and enhance Accountabl’s platform and integrations. From designing new features to strengthening backend services and APIs, you’ll contribute across the full development lifecycle. We’re looking for someone who writes clean, scalable code, thinks about system reliability, and takes ownership from idea through to deployment. If you enjoy building scalable fintech products and solving complex operational challenges, we’d love to hear from you.

What You'll Be Doing

  • Designing, building, and maintaining secure, scalable backend and frontend components
  • Contributing to the architecture and implementation of new product features
  • Developing and maintaining API integrations with external systems
  • Working on authentication flows, webhooks, and data synchronisation processes
  • Collaborating with Product to assess technical feasibility and support feature testing
  • Participating in sprint planning, retrospectives, and Agile ceremonies
  • Writing unit and integration tests to ensure platform stability
  • Supporting performance optimisation, monitoring, and bug resolution
  • Maintaining clear documentation for APIs and technical processes
  • Continuously identifying opportunities to improve automation, reliability, and efficiency

What You’ll Need

  • 2–4 years of experience building production-grade applications
  • Strong experience with JavaScript / TypeScript (full-stack), writing production code across frontend and backend
  • Experience with React (React Native for mobile is a plus) and modern SPA frameworks
  • Experience with NestJS or comparable structured backend frameworks such as .NET or similar
  • Solid understanding of clean, reusable, maintainable code, separation of concerns, and scalable system design
  • Experience building and consuming RESTful APIs and/or event-driven systems
  • Experience working with PostgreSQL, strong SQL fundamentals, and comfort across raw SQL, query builders, and ORMs
  • Comfort working in an Agile development environment
  • Strong problem-solving ability, attention to detail, and ownership mindset
  • Clear communication skills and ability to collaborate cross-functionally

Why Join Accountabl

You’ll work at the core of a growing fintech platform, building and improving systems that power real transactions for real businesses. You’ll have ownership over meaningful parts of the codebase, from feature development to architectural decisions, rather than just shipping tickets. You’ll collaborate closely with product and leadership, giving you influence over technical direction and the opportunity to shape how the platform evolves as we scale.

Full Stack Engineer in City of London employer: Accountabl

At Accountabl, we pride ourselves on fostering a dynamic and inclusive work culture that empowers our employees to take ownership of their projects and drive innovation. As a Full Stack Engineer in London, you'll enjoy the benefits of a hybrid work environment, opportunities for professional growth, and the chance to contribute to a cutting-edge fintech platform that is transforming expense management for businesses. Join us to be part of a collaborative team where your ideas matter and your contributions have a real impact.
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Contact Detail:

Accountabl 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 folks in the fintech space, especially those at Accountabl. A friendly chat can open doors that a CV just can't.

✨Tip Number 2

Show off your skills! Build a small project or contribute to an open-source one that showcases your full-stack abilities. It’s a great way to demonstrate your coding chops and problem-solving skills.

✨Tip Number 3

Prepare for the technical interview by brushing up on your JavaScript/TypeScript and React knowledge. Practice coding challenges and be ready to discuss your thought process while solving problems.

✨Tip Number 4

Don’t forget to 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 joining the team.

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

JavaScript
TypeScript
React
React Native
NestJS
.NET
RESTful APIs
Event-Driven Systems
PostgreSQL
SQL Fundamentals
Agile Development
Problem-Solving Skills
Attention to Detail
Clear Communication Skills
Collaboration Skills

Some tips for your application 🫡

Tailor Your CV: Make sure your CV reflects the skills and experiences that match the Full Stack Engineer role. Highlight your experience with JavaScript, TypeScript, and any relevant frameworks like React or NestJS. We want to see how you can contribute to our platform!

Craft a Compelling Cover Letter: Your cover letter is your chance to show us your personality and passion for fintech. Share why you're excited about building scalable products and how your problem-solving skills can help us tackle complex challenges at Accountabl.

Showcase Your Projects: If you've worked on any projects that demonstrate your coding skills or experience with APIs, make sure to include them! We love seeing real examples of your work, so don’t hold back on sharing your GitHub or portfolio links.

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’re considered for the role. Plus, it shows us you’re keen on joining the Accountabl team!

How to prepare for a job interview at Accountabl

✨Know Your Tech Stack

Make sure you’re well-versed in JavaScript, TypeScript, and the frameworks mentioned in the job description. Brush up on your React skills and be ready to discuss how you've used these technologies in past projects. Being able to talk about specific challenges you faced and how you overcame them will show your problem-solving abilities.

✨Showcase Your Ownership Mindset

Accountabl is looking for someone who takes ownership from idea through to deployment. Prepare examples of projects where you’ve taken the lead, whether it’s designing a feature or resolving a critical bug. Highlighting your proactive approach will resonate well with the interviewers.

✨Understand Agile Methodologies

Since the role involves participating in Agile ceremonies, brush up on Agile principles and be ready to discuss your experience working in such environments. Share how you’ve contributed to sprint planning or retrospectives, as this will demonstrate your ability to collaborate effectively with cross-functional teams.

✨Prepare Questions About the Company

Show your interest in Accountabl by preparing thoughtful questions about their platform and future direction. Ask about their approach to system reliability and performance optimisation, as this will not only show your enthusiasm but also your understanding of the role's importance in the company's success.

Full Stack Engineer in City of London
Accountabl
Location: City of London

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