We’re Capital on Tap 👋
💳 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!
🏡🏢This is a remote B2B contract role.
The Role
We're looking for Senior Software Engineers to help us carry out a Monolith to Microservices migration. You'll work across cross-functional teams alongside Product Managers, QA Engineers, and fellow Software Engineers, owning problems end to end, from the first line of code through to production, monitoring, and continuous improvement.
This isn't a role for someone who wants to be handed a ticket and told what to build. We're looking for engineers who understand the problem, challenge the approach when it needs it, and take pride in the quality of what they ship. We only build what the customer wants.
What You’ll Be Doing
- Designing and building robust, scalable solutions in .Net/C#, taking full ownership of the SDLC from concept through to production
- Take part in the migration of a monolith to microservices.
- Playing an active role in architectural decisions and technical direction, shaping how things are built, not just building them
- Working closely with Product and QA, bringing your technical perspective early and often
- Writing bulletproof unit and integration tests and holding a high bar for code quality across the team
- Communicating clearly across technical and non-technical stakeholders, translating complex engineering decisions into business context
- Mentoring and supporting engineers around you, raising the standard of the team as well as your own output
We’re Looking For 🔎
Required skills:
- 5+ years of hands-on experience in C#, .Net and SQL Server; React and Typescript are a strong plus
- Experience carrying out a migration from monolith to microservices
- A clear sense of what senior means. Not just years in the seat, but ownership, judgement, and the ability to operate with ambiguity
- Strong testing practices across unit and integration testing
- Broad engineering knowledge that goes beyond your core stack; the kind of depth and curiosity that comes from solving hard problems in complex, distributed systems
- The ability to communicate clearly and confidently, with your team, with Product, and with the wider business
- Experience working in agile, cross-functional teams
- Someone who's proactive, direct, and makes the people around them better
Our Tech Stack
- Backend: C#, .Net, .Net Core
- Frontend: React, Typescript
- Mobile: Flutter, Dart
- Databases: SQL Server, MongoDB
- Cloud: Azure & GCP
Interview Process 🤝
- First stage: 30-minute intro, CV review, and values with a Talent Partner
- Second stage: 45-minute “Tech Chat” with a Team Manager
- Final stage: 90-minute Code Pairing + 30-minute Values Interview
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.
Other Info
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📧Email [email protected] if you have any questions.
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.)
Skills Required
- 5+ years of hands-on experience with C#, .NET, and SQL Server
- Strong testing practices across unit and integration testing
- Experience solving complex problems in distributed systems
- Ability to communicate clearly with technical and non-technical stakeholders
- Experience working in agile, cross-functional teams
- Ownership, sound judgment, and ability to operate with ambiguity
- Proactive attitude and ability to mentor or improve team performance
- React and TypeScript experience
Capital on Tap Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Capital on Tap and has not been reviewed or approved by Capital on Tap.
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Fair & Transparent Compensation — Pay is often described as competitive for the work, with operations and night‑shift roles frequently citing strong base salary. Overall sentiment indicates financial compensation is considered fair to strong across many teams.
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Strong & Reliable Incentives — Performance-related bonuses are available in several roles, and feedback suggests they can be achievable and meaningfully supplement income. Sales or shift-based structures are highlighted as offering solid earning potential when targets are met.
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Leave & Time Off Breadth — The package includes PTO, paid holidays, and a paid sabbatical after four years, alongside a defined learning budget. These time-off and development elements stand out as notable strengths in the overall offering.
Capital on Tap Insights
What We Do
Capital on Tap makes it easy for small businesses to manage their business spending, access funding, and earn best-in-class rewards. More than 200,000 small businesses have spent $5 billion on their Capital on Tap Business Credit Cards across the US and UK. The Capital on Tap Business Credit Card is issued by WebBank.
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