Back End Developer

Back End Developer

London Full-Time 48000 - 72000 £ / year (est.) No home office possible
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At a Glance

  • Tasks: Design and evolve B2B APIs and payments infrastructure using modern cloud technologies.
  • Company: Dynamic fintech company in SW London with a focus on innovation.
  • Benefits: Competitive salary of £80k plus shares and comprehensive benefits.
  • Why this job: Join a fast-paced start-up and tackle complex challenges while making an impact.
  • Qualifications: 5+ years in software engineering, experience in financial services, and strong tech skills.
  • Other info: Collaborative environment with opportunities for professional growth and development.

The predicted salary is between 48000 - 72000 £ per year.

£90k (potentially up to £100k) + Shares & Benefits

SW London

This is a genuinely exciting opportunity. The company is on a steep growth trajectory, with US expansion planned for later this year.

They\’re redefining payments by removing transaction fees for businesses and passing those savings on to customers, driving higher conversion, repeat purchases, and long-term loyalty.

What You\’ll Be Working On

Designing and evolving B2B APIs, payments infrastructure, and personalisation systems

Collaborating closely with UX and Product on discovery, ideation, and problem-solving

Contributing to engineering-wide initiatives, architecture decisions, and best practices

Making autonomous, high-impact decisions that directly affect customers

Mentoring and sharing knowledge within a growing engineering team

What We\’re Looking For

5+ years of software engineering experience

Background in financial services, payments, or high-volume transaction platforms

Delivery-focused mindset with agile ways of working

Strong experience with Node.js, TypeScript, NestJS, AWS

Exposure to Terraform and Kubernetes is a plus

Solid understanding of REST APIs, CI/CD, test automation, and security

Tax-advantaged share options

Choice of MacBook or Windows

Flexible working and home-office setup

Contributory pension scheme

Team lunches, socials, birthday off + one \”Revival Day\”

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Back End Developer employer: F5 Consultants

As a Back End Developer at our innovative company in SW London, you'll thrive in a dynamic work culture that champions collaboration and creativity. We offer competitive salaries, equity options, and a comprehensive benefits package, alongside ample opportunities for professional growth and development in the fast-evolving tech landscape. Join us to make a meaningful impact in the financial services sector while enjoying the perks of working in a vibrant start-up environment.
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Contact Detail:

F5 Consultants Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Back End Developer

Tip Number 1

Network like a pro! Reach out to your connections in the tech industry, especially those who work in financial services or payments. A friendly chat can lead to insider info about job openings that aren't even advertised yet.

Tip Number 2

Show off your skills! Create a portfolio showcasing your best projects, especially those involving APIs and cloud technologies. This gives potential employers a taste of what you can do and sets you apart from the crowd.

Tip Number 3

Prepare for technical interviews by brushing up on your coding skills and understanding of TypeScript, NestJS, and AWS. Practise common interview questions and coding challenges to boost your confidence.

Tip Number 4

Don’t forget to apply through our website! It’s the best way to ensure your application gets seen. Plus, we love seeing candidates who are proactive and eager to join our team.

We think you need these skills to ace Back End Developer

Software Engineering
B2B API Design
Payments Infrastructure
Personalisation Systems
TypeScript
NestJS
AWS
Infrastructure as Code (Terraform)
Kubernetes
Public REST API Development
Continuous Delivery
Test Automation
Security Best Practices
Problem-Solving Skills
Adaptability

Some tips for your application 🫡

Tailor Your CV: Make sure your CV highlights your experience with TypeScript, NestJS, and AWS. We want to see how your skills align with the role, so don’t be shy about showcasing your relevant projects!

Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Tell us why you’re passionate about backend development and how your experience in financial services or high-volume platforms makes you a great fit for our team.

Showcase Your Problem-Solving Skills: In your application, share examples of complex challenges you've tackled in previous roles. We love seeing how you approach problems and come up with innovative solutions!

Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way to ensure your application gets into the right hands and shows us you’re serious about joining our team!

How to prepare for a job interview at F5 Consultants

Know Your Tech Stack

Make sure you’re well-versed in TypeScript, NestJS, and AWS. Brush up on your knowledge of Infrastructure as Code with Terraform and Kubernetes. Being able to discuss your experience with these technologies confidently will show that you’re the right fit for their backend development needs.

Showcase Your Problem-Solving Skills

Prepare examples of how you've tackled complex challenges in previous roles, especially in high-volume transaction platforms. They’ll want to see your thought process and how you approach problem-solving, so be ready to share specific scenarios where you made a significant impact.

Understand Their Business

Research the company’s B2B APIs and payments infrastructure. Familiarise yourself with their products and how they use technology to enhance user experience. This will not only help you answer questions more effectively but also demonstrate your genuine interest in the role.

Ask Insightful Questions

Prepare thoughtful questions about their engineering initiatives and team dynamics. Asking about their approach to continuous delivery or test automation can show that you’re engaged and thinking critically about how you can contribute to their success.

Back End Developer
F5 Consultants
Location: London
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