About us
We're a Manchester-based FinTech building a smarter way for tenants to pay rent. Our platform pays landlords the full rent on time and collects smaller instalments from tenants via Open Banking Variable Recurring Payments (VRP). We're a small, high-trust engineering team solving genuinely hard problems in payments, credit, and financial correctness — where getting the maths and the money movement exactly right matters.
The role
We're looking for a Senior Full Stack Developer to own features end-to-end across our .NET backend and React Native mobile client. You'll work close to the domain — instalment maths, double-entry ledgers, scheduled money movement, and third-party integrations with banking and identity providers. This is a hands-on senior role with real ownership and influence over architecture.
What you'll work with
Backend: .NET 10 / C#, EF Core (SQL Server), a service-oriented solution with clean domain boundaries
Async & messaging: MassTransit, background workers, durable/idempotent scheduled jobs
Cloud & platform: Azure, .NET Aspire, containerised services
Mobile: Expo / React Native (TypeScript)
Integrations: Open Banking, VRP, BaaS, identity verification, credit decisioning
Practices: ADR-driven architecture, EF Core migrations, automated testing (MSTest, NSubstitute, FluentAssertions)
What you'll do
Design and ship features spanning the C# backend and the React Native app
Model financial domains carefully — money, fees, timing differences, ledgers — where precision is non-negotiable
Build resilient, idempotent background processing for payment execution and scheduling
Integrate with external banking, payments, and identity providers
Contribute to architectural decisions
What we are looking for
Strong commercial experience with C# / .NET and modern TypeScript
Solid EF Core / relational database skills (SQL Server ideal)
Experience building and consuming APIs, and working with asynchronous/message-based systems
React Native (Expo) experience, or strong React skills and appetite to work across mobile
A pragmatic, quality-first mindset — you care about correctness, testing, and clear design
Bonus: FinTech / payments / Open Banking experience, cloud (Azure), event-driven architecture
Experience:
C#: 5 years (required)
React Native: 2 years (required)
Work authorisation:
United Kingdom (required)
Work Location: Hybrid remote in Manchester
£65k–£85k salary depending on experience
Hybrid working from our Manchester office
25 days holiday + bank holidays
Pension, and the chance to shape a product (and a team) from an early stage
Meaningful ownership and a direct line to the impact of your work
Sound like you? Apply with your CV and a short note on something you've built that you're proud of.
Senior Full Stack Developer in Manchester employer: Spliit LTD
Spliit is an exceptional employer located in Manchester, offering a dynamic work environment where engineers enjoy real ownership of their projects and a significant influence on product evolution. With a strong focus on quality and innovation, employees benefit from a modern tech stack, mentorship opportunities, and a collaborative culture that values autonomy and meaningful contributions to the fintech landscape.
