AI Software Engineer

Who you are

• Hands-on experience in C#, .NET
• Good testing practices, in both Unit and Integration testing
• Experience building agentic systems
• Experience in driving initiatives across engineering teams
• A focus on delivering concrete, measurable results
• A proactive, supportive, and collaborative team player

What the job involves

• This is a software engineering role first and foremost, with a focus on agentic systems, agentic orchestration and supporting technical teams in using AI
• This is the type of work you will be doing:
• Developing agentic systems and orchestration layers to help us ship faster
• Building “AI on Tap”, Capital on Tap’s internal AI enablement hub. It is the single place to see every AI agent the company runs, the cost of each one, how ready each codebase is for AI-assisted development, and how to get more value from Claude and other providers
• Working with QA and Platform to integrate agentic testing and verification tools across our pipeline to deploy faster
• Owning build-vs-buy recommendations, from evaluation through to team buy-in
• Whatever it takes to reach an agentic future — tech debt, CI/CD, the unglamorous work that unblocks everything else

The application process

• 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.)

Benefits

• Health benefits include private healthcare insurance, free therapy sessions and eye care vouchers
• Subsidised gym membership and company sports teams
• We contribute 4% to your pension (with up to 7% match) through our pension plan
• Cycle to work scheme, annual travel card loan and parking space loans for the Cardiff office
• Our London office has access to bike storage and shower facilities
• Worldwide Travel Insurance cover through Vitality
• You get 28 days of holiday exclusive of bank holidays every year
• After 4 years, you can take a 4 week paid sabbatical
• If you are a new parent, you can enjoy enhanced parental leave
• Every year, you have access to a £1000 learning budget to spend on anything that helps your development
• We also hold company knowledge sharing including show and tells and our own version of TED talks
• Our Happy Club organises monthly socials including quiz nights, scavenger hunts, and celebrations of all occasions whether it's PRIDE, religious holidays or another tradition
• You can also enjoy regular team socials to bond with your team!
• We have an array of company clubs including netball, football, and book clubs. Or start your own!
• For your first anniversary, you'll receive a reward of £250 to pilot something new in your personal life. When you reach 2 years, you will receive £500 to Be a Buddy to a loved one. The rewards just keep getting better with every year you're with us!
• Take your colleague to lunch with our 'Be a Buddy Lunch' or receive a referral bonus if you recommend your brilliant friends to join the team