Lead Software Engineer

capitalontap

London · United Kingdom

Posted Jul 8, 2025

Other
Hybrid
IT

Job description

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 Hybrid role, the Engineering team work from our London (Moorgate) Offices 2 days per week.

This is a multiple headcount role, so please don't be put off if you've seen this advertised for a while.

What You’ll Be Doing

As a Lead Software Engineer at Capital on Tap, you'll be a highly experienced, deeply hands-on engineer who shapes how we build. You'll spend the majority of your time writing and reviewing code, designing systems, and solving complex technical problems; while naturally becoming the go-to technical authority your fellow engineers rely on. You'll work closely with other Technical Leaders, Product Managers, and the wider Engineering Group to deliver high-impact features and ensure our systems scale with the business.

Stay deeply hands-on in day-to-day software development, setting the technical standard through the quality of your own work
Design and evolve microservices and distributed systems that are scalable, resilient, and maintainable
Act as the technical authority in your area; you'll be the person engineers turn to when they hit a hard problem
Conduct thorough code reviews and share knowledge that raises the bar across the team
Lead high-impact projects from concept to delivery, making pragmatic architecture decisions along the way
Collaborate closely with Product, QA, and Team Leads to align technical execution with business goals
Identify and mitigate technical risk proactively, keeping delivery on track
Champion engineering best practices, including adoption of AI tools and automation

We’re Looking For 🔎

Extensive commercial experience with C# and .NET, capable of writing clean, well-tested, production-grade code
Strong experience designing and building microservices and distributed systems
Solid grounding in RESTful API design and Azure cloud development
Deep familiarity with modern software development practices and scalable system architecture
Experience working cross-functionally with Product, QA, and other stakeholders
Pragmatic approach to delivery; you know how to ship an MVP and iterate with purpose
Ability to embed deeply within an engineering group, building strong domain knowledge over time and becoming a trusted technical voice across the team and wider business
React or fullstack experience is a plus

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
🏖️ 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

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

Interview Process 🤝

First stage: 30 minute intro call with Talent Partner
Second stage: 45 minute "Tech Chat" & Values Interview with an Engineering Managers & People Partner
Third stage: 60 minute Code Pairing with 2x members of our engineering team
Final stage: 60 minute Case Study with Product & Engineering + 60 minute Good to Great Interview with our CTO (onsite)

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