Senior Backend Engineer — Remote, Scalable APIs & Payments in London

Senior Backend Engineer — Remote, Scalable APIs & Payments in London

London Full-Time 60000 - 80000 £ / year (est.) Working from home possible
Forsyth Barnes

At a Glance

  • Tasks: Design and build scalable REST APIs and integrate payment flows using modern patterns.
  • Company: Forsyth Barnes, a forward-thinking tech company with a remote-first approach.
  • Benefits: Flexible remote work, competitive salary, and opportunities for professional growth.
  • Other info: Work with cutting-edge Azure services in a supportive environment.
  • Why this job: Join a dynamic team and work on impactful projects in the fintech space.
  • Qualifications: Strong experience in .NET, SQL Server or PostgreSQL, and collaboration skills.

The predicted salary is between 60000 - 80000 £ per year.

Forsyth Barnes is seeking a senior .

NET developer for a predominantly remote role in the United Kingdom.

You will design and build scalable REST APIs, integrate payment flows, and apply modern patterns like DI, middleware, and clean architecture.

You will work with Azure services (Service Bus, API Management, Key Vault) and ensure reliability with idempotency and robust error handling.

Strong SQL Server or Postgre SQL experience is required, collaborating with cross-functional teams.

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Senior Backend Engineer — Remote, Scalable APIs & Payments in London employer: Forsyth Barnes

Forsyth Barnes is an exceptional employer, offering a dynamic work culture that fosters innovation and collaboration. As the Head of Delivery, you will not only lead transformative projects in critical sectors like Utilities and Energy but also benefit from extensive professional development opportunities and a competitive salary package. Join us to make a meaningful impact while working alongside talented professionals in a supportive environment.

Forsyth Barnes

Contact Details:

Forsyth Barnes Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land Senior Backend Engineer — Remote, Scalable APIs & Payments in London

Join Local Tech Meetups

Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Forsyth Barnes or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!

Contribute to Open Source Projects

Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Forsyth Barnes.

Tap into Online Developer Communities

Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like Forsyth Barnes.

Explore Job Boards Specifically for Tech Roles

Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like Forsyth Barnes that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!

We think you need these skills to ace Senior Backend Engineer — Remote, Scalable APIs & Payments in London

.NET Development
REST API Design
Payment Integration
Dependency Injection (DI)
Middleware
Clean Architecture
Azure Services

Some tips for your application 🫡

Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.

Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Forsyth Barnes.

Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Forsyth Barnes and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!

Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!

How to prepare for a job interview at Forsyth Barnes

Brush Up on Your Coding Skills

For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.

Know Your Tools and Frameworks

Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Forsyth Barnes uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.

Showcase Your Projects

Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.

Prepare for Behavioural Questions

While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.