Software Engineer - Banking in London

Software Engineer - Banking in London

London Full-Time 60000 - 80000 £ / year (est.) Home office (partial)
Capital on Tap

At a Glance

  • Tasks: Design and build robust back-end systems for our Banking and Repayments platform.
  • Company: Join Capital on Tap, a leading fintech revolutionising small business banking.
  • Benefits: Enjoy private healthcare, 28 days holiday, and a fun office environment with perks.
  • Other info: Hybrid role with a vibrant culture and excellent career growth opportunities.
  • Why this job: Make a real impact in a fast-growing company while working with cutting-edge technology.
  • Qualifications: Strong experience in C#/.NET and mobile development in Flutter, Kotlin, or Swift.

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

Capital on Tap started because small businesses were underserved. Big banks were slow, their products weren't fit for purpose, and small business owners often couldn't access what they needed. We set out to fix that. Today we're a financial platform - not just a credit card company. We offer a best-in-class business credit card, SME-focused spend management platform, a savings product that hit £1 billion in funds within its first year, and a growing suite of tools and financial products that make running a small business easier.

This is a Hybrid role, the team work from our London Offices 2 days per week.

The Banking and Repayments teams sit at the heart of Capital on Tap's product, owning the core account experience for thousands of small business customers. Banking manages account operations, transaction lifecycles, balance management, ClearBank integration, and savings. Repayments owns the repayment rails, including the most recent open banking repayments.

We value engineers who take genuine ownership, work autonomously, and bring depth across the stack. This is a high-priority hire with real impact from day one.

What You'll Be Doing

  • As a Senior Software Engineer, you'll own the back-end systems that power our Banking and Repayments platform, while also contributing to mobile - helping transition mobile and front-end ownership from our Customer Experience team into Banking.
  • Design and build robust, scalable back-end services in C#/.NET.
  • Own the full SDLC - from feature inception through to production, monitoring, and continuous improvement.
  • Contribute to mobile development across iOS and Android using Flutter, Kotlin, and/or Swift.
  • Collaborate with Product, Design, and QA from early feature shaping through to delivery.
  • Write thorough unit and integration tests and uphold high engineering standards.
  • Identify bottlenecks and drive improvements across the team.
  • Work cross-functionally, bridging technical decisions with business goals.

What We're Looking For

  • Strong back-end engineering experience, ideally in C#/.NET.
  • Mobile development experience in Flutter/Dart, Kotlin, or Swift - this is a firm requirement, not a nice-to-have.
  • Solid testing practice across unit and integration testing.
  • Experience with CI/CD platforms such as CodeMagic or similar.
  • Comfortable working in Agile environments.
  • Autonomous and collaborative - you take ownership and see things through.

Our Tech Stack

  • Backend: C#, .NET, .NET Core.
  • Mobile: Flutter, Dart, Riverpod, GoRouter, Kotlin, Swift.
  • Databases: SQL Server, MongoDB, Firestore.
  • Cloud: GCP (Firebase) and Azure.
  • CI/CD: CodeMagic.

Diversity & Inclusion

We welcome, consider and encourage applications from anyone who shares our commitment to inclusivity. Join us in creating a space where authenticity thrives, and everyone can do their best work.

Great Work Deserves Great Perks

We try not to take ourselves too seriously (all the time) so we make sure our office is decked out with a pool table, arcade machine, beer tap, and a couple of office dogs thrown in for good measure. Check out our benefits:

  • Private Healthcare including dental and opticians services through Vitality.
  • Worldwide travel insurance through Vitality.
  • Anniversary Rewards (£250, £500, £750, 4-week fully paid sabbatical).
  • Salary Sacrifice Pension Scheme up to 7% match.
  • Octopus EV Salary Sacrifice Scheme.
  • 28 days holiday (plus bank holidays).
  • Annual Learning and Wellbeing Budget.
  • Enhanced Parental Leave.
  • Cycle to Work Scheme.
  • Season Ticket Loan.
  • 6 free therapy sessions per year.
  • Dog Friendly Offices.
  • Free drinks and snacks in our offices.

If you’d like to progress your career within our fast growing, profitable fintech then click apply and we will aim to get back to you within 3 working days (during busy periods this could take up to 5 working days).

Software Engineer - Banking in London employer: Capital on Tap

At Capital on Tap, we pride ourselves on being an exceptional employer that champions innovation and inclusivity within the fintech space. Our vibrant London office fosters a collaborative work culture where engineers can take ownership of impactful projects while enjoying unique perks like a dog-friendly environment, private healthcare, and generous holiday allowances. With a strong focus on employee growth and well-being, we offer extensive learning budgets and rewards for long service, making us an ideal place for those looking to thrive in their careers.

Capital on Tap

Contact Details:

Capital on Tap Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land Software Engineer - Banking in London

Tap into Campus Networks

If you're still in uni, don’t forget to engage with your campus's career services and attend finance-related events. Banks often do presentations and recruitment drives on campus, so put yourself out there and make use of these opportunities to show off your passion for the field.

Get Certified

Consider pursuing relevant certifications like the CFA or ACCA while you’re job hunting. They not only beef up your CV but also connect you with professional bodies which can lead to networking opportunities and even job openings in banking and financial services.

Connect on Professional Platforms

Join finance-focused groups on platforms like LinkedIn and engage in discussions. This can really help you stand out from the crowd, allowing potential employers to see your knowledge and interest in industry trends. Plus, you might stumble upon job postings shared exclusively within the group.

Apply Directly and Be Proactive

Don’t shy away from reaching out directly to firms like Capital on Tap. Use their websites and apply through them, but also consider following up with a polite email to express your enthusiasm. Being proactive can make a huge difference in getting noticed in the competitive financial services sector.

We think you need these skills to ace Software Engineer - Banking in London

C#
.NET
.NET Core
Flutter
Dart
Kotlin
Swift

Some tips for your application 🫡

Show Off Your Numbers!:In the banking and financial services world, quantifiable achievements are key. Make sure your CV highlights your grades in relevant subjects, any financial certifications you hold, and specific projects where you've delivered measurable results. Employers love to see how your skills translate into real-world success.

Tailor Your Cover Letter to the Role:When applying for a full-time position, your cover letter should make a direct connection between your experience and the job description. Don't just state your enthusiasm for finance—dive into how your background in banking or financial analysis sets you apart. Let your passion shine through while being specific about what you can bring to Capital on Tap.

Include Relevant Financial Software Experience:If you've worked with financial modelling tools or software like Excel, SAP, or specific analytical tools during your studies or internships, bring that up! Highlighting your proficiency can really make your application pop and show you're ready to hit the ground running in a full-time role.

Research and Reflect:Before hitting that 'apply' button on Capital on Tap's website, do a little digging. Look up their recent projects, values, and culture. Reflecting their ethos in your application can make a huge difference and show you’re genuinely interested in being part of the team!

How to prepare for a job interview at Capital on Tap

Brush Up on Financial Analysis Skills

Make sure you're well-versed in financial concepts and analytical techniques relevant to banking and financial services. Get comfortable with tools like Excel for modelling or financial forecasting, as technical questions in this area are common during interviews with Capital on Tap.

Prepare for Case Studies

Expect to tackle case studies that demonstrate your problem-solving skills in real-world banking scenarios. Familiarise yourself with the types of problems you might face—think risk assessments or investment evaluations—and be ready to articulate your thought process clearly.

Show Your Passion for Finance

Since this is a full-time position, employers at Capital on Tap will be keen to see your genuine interest in finance. Be prepared to discuss recent industry trends or news articles that excite you, showcasing your enthusiasm and engagement with the field.

Network with Industry Professionals

Before your interview, reach out to current or former Capital on Tap employees on platforms like LinkedIn. They'll offer unique insights into the company's culture and the interview process, which can give us a delightful edge in showcasing a good fit for the team.