Software Engineer - AI

Whereby

Greater London

Hybrid

GBP 85,000 - 140,000

Full time

14 days+

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Benefits offered by this job

Private Healthcare including dental/ey

Worldwide travel insurance

Sabbatical rewards

Pension scheme

EV salary sacrifice

28 days holiday

Learning & wellbeing budget

Parental leave enhancement

Cycle to work

Season ticket loan

Therapy sessions

Dog-friendly offices

Free drinks & snacks

Job summary

Capital on Tap is seeking an AI Product Engineer to help the engineering and product teams leverage AI effectively across products and services. The role focuses on agentic systems, orchestration, and enabling teams to deliver high-quality software faster, with hands-on coding and architecture work.

This position is hybrid, based in London with two days per week in the Moorgate offices. You will own implementation decisions, collaborate across engineering and QA, and drive measurable

Qualifications

Hands-on experience with C# and .NET.
Experience with unit and integration testing.
Experience building agentic systems.
Experience driving engineering initiatives across teams.
Focus on delivering concrete, measurable results.
Proactive, supportive, and collaborative teammate.

Responsibilities

Develop agentic systems and orchestration layers to ship faster.
Build "AI on Tap", Capital on Tap’s internal AI enablement hub.
Work with QA and Platform to integrate agentic testing and verification.
Own build-vs-buy recommendations, from evaluation through to buy-in.
Tackle tech debt and CI/CD to unblock work.

Skills

C# / .NET

Unit & Integration testing

Agentic systems

Cross-team engineering leadership

Result-driven

Collaborative team player

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 AI team work from our Moorgate (London) Offices 2 days per week.

AI Product Engineering at Capital on Tap

We are a small but highly empowered team with the overall goal of enabling the Engineering and Product teams to effectively use AI to deliver high-quality products and services faster to better serve our customers. Our responsibilities include improving speed of engineering delivery, making AI tooling and skills easily and widely available to the entire business, creating agents to perform tasks across a wide range of functions, and general oversight of engineering AI initiatives.

What you will be doing

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

We’re Looking For

Required skills:

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

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: