Software Engineer (AI) London

Capital On Tap; City Of London; Hybrid; GBP 200,000 +; Full time

Job summary

A leading financial technology company in London is seeking an AI Engineer to collaborate with product teams on AI features. The role emphasizes hands-on coding, training, and establishing best practices for AI systems. The ideal candidate has over four years of experience in C# and .NET Core, with a passion for AI technologies and teamwork. This hybrid position offers a dynamic work environment with numerous perks.

Benefits

Private Healthcare

Worldwide travel insurance

Anniversary Rewards

Salary Sacrifice Pension Scheme

28 days holiday

Annual Learning and Wellbeing Budget

Enhanced Parental Leave

Cycle to Work Scheme

Season Ticket Loan

6 free therapy sessions

Dog Friendly Offices

Free drinks and snacks

Qualifications

• 4+ years hands-on experience in C#, .NET Core.
• Experience building agents and automation powered by AI.
• Good testing practices in both unit and integration testing.

Responsibilities

• Embed within product teams to co-deliver AI-powered features like chatbots.
• Run workshops and training sessions to build AI competency.
• Establish best practices for testing non-deterministic AI systems.

Skills

C#

.NET Core

AI technologies

Unit Testing

Integration Testing

Collaboration

Job description

Overview

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.

This is a Hybrid role, the Software Engineering Team works from our London Office (Moorgate) 2 days per week.

AI Engineering at Capital on Tap

We\'re building a small team of 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. A core part of the role is upskilling the wider Engineering department through workshops, documentation, and knowledge transfer.

What You’ll Be Doing

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.

• Embed within product teams to co-deliver AI-powered features like chatbots, OCR tools, and transaction enrichment systems
• Write production code alongside the team, ensuring they understand the architecture and can maintain it post-launch
• Run workshops and training sessions to build AI competency across the Engineering department
• Establish best practices for testing and evaluating non-deterministic AI systems
• Create documentation, patterns, and example code for common AI implementation scenarios
• Help teams identify where AI could add value to their product roadmap
• Act as the quality owner for AI delivery across the company
• 4+ years hands-on experience in C#, .NET Core
• Proven experience building agents and automation powered by AI
• Experience integrating with LLMs or other AI technologies
• Good testing practices, in both Unit and Integration testing
• A passion for learning and teaching new skills and technologies
• A proactive, supportive, and collaborative team player

Our Hiring Stages

• 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

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

Apply

Excited to work here? 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).

UK DE&I Data

At Capital on Tap we are fully focused on equality and believe deeply in diversity of race, gender, sexual orientation, religion, ethnicity, ability, national origin and all the other characteristics that make us who we are. We want to be a place where a diverse mix of talented people want to come and do their best work and most importantly feel included and that they can be their authentic selves.

In order to remain committed to our goal, we need to analyse and identify where we need to take steps to make positive impact. The first step in this process is gathering anonymous data on our candidates. We would encourage you to help us by filling in the form below.

All of the questions we ask are optional and will not affect your application. You don\'t have to share this with us and we won\'t consider it as part of your application. If you choose not to share this info, it won\'t impact your application in any way.