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Capital on Tap

Senior Backend Software Engineer

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In-Office
London, England
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In-Office
London, England

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We’re Capital on Tap 👋
💳 Capital on Tap was founded with the mission to help small business owners and make their lives easier. Today, we provide an all-in-one business credit card & spend management platform that helps business owners save time and money. Capital on Tap proudly serves over 200,000 businesses across the world and our goal is to help 1 million small businesses by 2030.

Why Join Us?
We empower you to be innovative and solve complex problems. Take ownership, make an impact, and thrive in our scaling and agile environment.

Why Join Us?
We empower you to be innovative and solve complex problems. Take ownership, make an impact, and thrive in our scaling and agile environment.

📈Check out the development opportunities in the Software Engineering team

🏢This is a Hybrid role, the Software Engineering Team works from our London (Shoreditch) Offices 2 days per week

What You’ll Be Doing
We’re looking for Backend Software Engineers to help us build the best credit card and payment products for small businesses. If you’re looking for an environment where you’re given the freedom to make empowered decisions, research new technologies, and learn/share knowledge with your peers. Then keep on reading!

  • You’ll build robust and scalable solutions using .Net technology
  • From the first line of code to production, monitoring, and continuous improvement - you’ll own the SDLC
  • Teamwork makes the dream work - you’ll partner with Product Managers, QA’s, and fellow Software Engineers
  • You’ll build bulletproof unit and integration tests to keep our software sharp and our users happy
  • Bugs happen. When they do, you’ll be ready to troubleshoot and tweak as needed
  • You’ll bridge the gap between tech speak and business goals, ensuring everyone’s on the same page and moving forward together

Our Tech Stack

  • Backend: C#, .Net, .Net Core
  • Frontend: React, JavaScript
  • Databases: SQL Server, MongoDB
  • Cloud: Azure & GCP

We’re Looking For

  • 6+ years hands-on experience in C#, .Net Core, SQL Server
  • Good testing practices, in both Unit and Integration testing
  • Good understanding of database technologies
  • Experience in using Agile development practices
  • A passion for learning new skills and technologies
  • A proactive, supportive, and collaborative team player

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.

Interview Process 🤝

  • First stage: 30-minute intro, CV review, and values with Talent Partner
  • Second stage: 45-minute “Tech Chat” with Team Manager
  • Final stage: 90-minute Code Pairing + 30-minute Values Interview

Other Info
👍Check out our ‘Top Tips’ for interviewing.
✔️Keep updated on new job opportunities by following us on Linkedin.
📧Email [email protected] if you have any questions.


Other Info
👍Check out our ‘Top Tips’ for interviewing.
✔️Keep updated on new job opportunities by following us on Linkedin.
📧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.)

Capital on Tap London, England Office

7th Floor, The Tea Bldg, 56 Shoreditch High St, London, United Kingdom, E1 6JJ

What you need to know about the London Tech Scene

London isn't just a hub for established businesses; it's also a nursery for innovation. Boasting one of the most recognized fintech ecosystems in Europe, attracting billions in investments each year, London's success has made it a go-to destination for startups looking to make their mark. Top U.K. companies like Hoptin, Moneybox and Marshmallow have already made the city their base — yet fintech is just the beginning. From healthtech to renewable energy to cybersecurity and beyond, the city's startups are breaking new ground across a range of industries.

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