Software Engineer (AI)

Capital on Tap; Greater London; Hybrid; GBP 60,000 - 80,000; Full time

Job summary

A fintech company in London is seeking experienced AI-specialist software engineers who will embed in product teams to deliver innovative AI features. The role emphasizes collaboration, teaching, and best practices in AI system testing. Candidates should have at least 4 years of C# .NET Core experience, alongside skills in AI technologies. This full-time position allows for hybrid work from the London office, combining flexibility and innovation within a rapidly growing team.

Benefits

Private Healthcare and dental service

Worldwide travel insurance

Anniversary Rewards (paid sabbatical)

Salary Sacrifice Pension Scheme

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

Qualifications

• 4 years of hands-on experience in C# .NET Core.
• Experience integrating with LLMs or other AI technologies.
• Good testing practices in both Unit and Integration testing.
• Experience in using Agile development practices.
• A passion for learning and teaching new skills and technologies.

Responsibilities

• Partner with product teams to build and deliver AI features.
• Write production code alongside the team and ensure maintainability.
• Run workshops to build AI competency across the engineering department.
• Establish best practices for testing AI systems.
• Create documentation and example code for AI implementation scenarios.

Skills

C# .NET Core

Integrating with LLMs or AI technologies

Unit and Integration testing

Agile development practices

Proactive team player

Passion for teaching new skills

Tools

Spring

.NET

JavaScript

React

C/C++

Job description

Were 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 200000 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.

Check out the development opportunities in the Software Engineering team

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

Were 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 youll 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 Youll Be Doing

Youll 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.

We’re Looking For

Required skills :

• 4 years hands‑on experience in C# .NET Core
• Experience integrating with LLMs or other AI technologies
• Good testing practices in both Unit and Integration testing
• Experience in using Agile development practices
• A passion for learning and teaching new skills and technologies
• A proactive supportive and collaborative team player

Interview Process

• 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.

Benefits

Check out our benefits :

• Private Healthcare including dental and opticians services through Vitality
• Worldwide travel insurance through Vitality
• Anniversary Rewards (-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

Key Skills

Spring,.NET,C / C++,Go,React,OOP,C#,Data Structures,JavaScript,Software Development,Java,Distributed Systems

Employment Type : Full Time

Experience : years

Vacancy : 1

Apply

Excited to work here? Apply! If youd 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.)