Senior Software Engineer (Fintech)

TL;DR

Senior Software Engineer (Fintech): Building and maintaining core banking and repayment systems with an accent on C#/.NET backend services and cross-platform mobile development. Focus on owning the full SDLC, ensuring system scalability, and bridging technical architecture with business requirements for a high-growth financial platform.

Location: Hybrid role, must be based in London and able to work from the office 2 days per week.

Company

A profitable, fast-growing financial platform providing business credit cards and spend management tools for small businesses.

What you will do

• Design and build robust, scalable back-end services using C# and .NET.
• Own the full software development lifecycle from feature inception to production and monitoring.
• Contribute to mobile development for iOS and Android using Flutter, Kotlin, or Swift.
• Collaborate with Product, Design, and QA teams to shape and deliver features.
• Write thorough unit and integration tests to uphold high engineering standards.
• Identify system bottlenecks and drive continuous improvements across the team.

Requirements

• Strong back-end engineering experience, ideally with C# and .NET.
• Proven mobile development experience in Flutter, Kotlin, or Swift is a firm requirement.
• Solid testing practices including unit and integration testing.
• Experience with CI/CD platforms such as CodeMagic.
• Ability to work autonomously in an Agile environment.
• Must be based in London and able to work from the office 2 days per week.

Culture & Benefits

• Private healthcare including dental and opticians services.
• Salary sacrifice pension scheme with up to 7% employer match.
• 28 days holiday plus bank holidays and anniversary rewards.
• Annual learning and wellbeing budget.
• Enhanced parental leave and cycle to work scheme.
• Dog-friendly office with amenities like a pool table and arcade machine.