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# Middle .NET Backend Engineer ( Banking)

- **Company:** bloomio
- **Location:** United Kingdom (Remote available)
- **Experience:** Experienced
- **Contract:** Permanent contract
- **Skills:** .NET Framework, Multitier Architecture, Amazon Web Services, Microsoft Azure, Code Review, Relational Databases, Software Debugging, Distributed Systems, Entity Framework, SQL Databases, Workflow Management Systems, Concurrency, Backend, Production Code, Front End Software Development, Restful APIs, Api Management, Serverless Computing, Microservices
- **Published:** November 6, 2026
- **Apply:** https://www.adzuna.co.uk/jobs/details/5955527439

## About the Role

Must-have

 * 3+ years of backend engineering experience
 * Strong C# and .NET
 * REST APIs, Entity Framework, SQL and relational databases
 * Clean or layered architecture; microservices on Azure and/or AWS
 * Experience in banking, fintech or financial products, with an understanding of basic banking concepts (for example, interest rates)
 * Strong problem-solving and debugging skills
 * English B2 or above, able to participate in all ceremonies actively and meetings

Nice to have

 * Experience with lending or savings products (strong bonus)
 * CRM or onboarding platforms
 * Concurrency, idem potency and workflow orchestration
 * Distributed systems and cloud-native services

## Description

We're recruiting for our technology partner, a UK bank, to hire a Middle Backend Engineer. This is a fully remote, long-term B2B contract on UK hours.

You'll design and evolve scalable backend systems in a modern .NET ecosystem, building customer-focused platforms with onboarding workflows, orchestration, and integrations across internal and external systems in a microservices architecture.

What you will do

 * Build and maintain backend APIs and services using C# and .NET
 * Work within a clean architecture and microservices ecosystem (UseCases, repositories, domain entities)
 * Design and implement backend workflows and REST APIs
 * Write maintainable, testable, production-ready code
 * Participate in code reviews and technical discussions
 * Work with SQL databases, Entity Framework and transactional workflows
 * Collaborate with frontend engineers on multi-step workflows and API contracts