Senior Software Engineer (AI)

You'll partner with product teams to build and deliver AI features, working embedded within their squad structure. Your role is to enable teams to successfully deliver AI capabilities while upskilling them to own the features long-term.

• 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

• 4+ years hands-on experience in C#, .NET Core
• 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

Nice to have:

• Experience sharing knowledge through training sessions or workshops, helping other teams get the most out of tools or systems you've built.
• Practical experience building backend applications or service wrappers that integrate with AI APIs or LLMs

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! Check out the development opportunities in the Software Engineering team This is a Hybrid role, the Software Engineering Team works from our London (Moorgate) Office 2 days per week AI Engineering at Capital on Tap We're building a small team of ~3 AI-specialist software engineers who embed directly within product teams to deliver intelligent features. Rather than operating as a separate unit, you'll work alongside existing teams as an internal consultant, helping them deliver AI-powered capabilities whilst building their skills through hands-on collaboration and structured training. Part of the role has a hand in upskilling the wider Engineering department through workshops, documentation, and knowledge transfer.