Software Engineer – Banking New London

Capital on Tap is a financial platform that offers a suite of small business financial products and services, including a best-in-class business credit card, spend management tools, and savings products.

Hybrid role; works from London offices two days a week.

The Team

The Banking and Repayments teams manage core account experiences for small business customers, overseeing account operations, transaction lifecycles, balance management, and repayment rails.

What You’ll Be Doing

• Design and build robust, scalable back‑end services in C#/.NET.
• Own the full software development life cycle from feature inception through production 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 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 – required.
• 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 with ownership.
• Experience with SQL Server, MongoDB, Firestore.
• Experience with GCP (Firebase) and Azure.
• Experience with CodeMagic CI/CD.

Diversity & Inclusion

Capital on Tap is an equal‑opportunity employer. We welcome applications from individuals of all backgrounds and encourage individuals to bring their authentic selves to work.

Benefits

• Private Healthcare.
• Worldwide travel insurance.
• Anniversary rewards up to £750 and a 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.
• Free therapy sessions per year.
• Dog friendly office.
• Free drinks and snacks.

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