Flutter Engineer - Banking

We’re Capital on Tap ðð³ 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. 1,000+ employees, 20bn in annual card spend, 200,000+ customers, 17,000+ Trustpilot reviews averaging 4.7 stars, and we're profitable.

We’ve done a pretty good job so far, but we’re just getting started! ð¡ðThis is a Hybrid role, the team work from our London Offices 2 days per week.

The Team 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 life cycles, balance management, Clear Bank 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 Flutter Engineer, you'll own the mobile and work on the back-end systems that power our Banking and Repayments platform, helping transition mobile and front-end ownership from our Customer Experience team into Banking.

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 Mobile development experience in Flutter this is a firm requirement

Strong back-end engineering experience

Solid testing practice across unit and integration testing

Experience with CI/CD platforms such as Code Magic or similar

Comfortable working in Agile environments

Autonomous and collaborative - you take ownership and see things through

Our Tech Stack Mobile:
Flutter, Dart, Riverpod, GoRouter, Kotlin, Swift Databases: SQL Server, MongoDB, Firestore Cloud: GCP (Firebase) and AzureCI/CD:
Code Magic Diversity  & Inclusion ðWe 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:ð Private Healthcare including dental and opticians services through Vitality️ Worldwide travel insurance through Vitalityð Anniversary Rewards (250, 500, 750, 4-week fully paid sabbatical)ð Salary Sacrifice Pension Scheme up to 7% matchð Octopus EV Salary Sacrifice Schemeð️ 28 days holiday (plus bank holidays)ð Annual Learning and Wellbeing Budgetðª Enhanced Parental Leaveð² Cycle to Work Schemeð Season Ticket Loanð 6 free therapy sessions per yearð¶ Dog Friendly Officesð« Free drinks and snacks in our offices

Check out more of our benefits, values and mission here.

Other Infoð

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Excited to work here? Apply!

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.)