💻 C#.NET Core Backend Engineer | 💳 Greenfield Payments Platform | £130,000 + Bonus + Benefits | H...

Job Description

C#.NET Core Backend Engineer | Greenfield Payments Platform | £130,000 + Bonus + Benefits | Hybrid (London)

Join a brand-new Payments Engineering team within a leading financial group as they build a modern, event-driven payments platform completely from scratch.

As a Backend C#.NET Core Engineer , you’ll be part of a small, high-impact team designing scalable, reliable services that power real-time payment flows, settlements, and reconciliations across the business. This is a greenfield project with plenty of ownership and visibility from day one.

⚙️ What You’ll Be Doing

• Designing and developing C#.NET Core microservices and APIs for payments, settlements, and orchestration
• ⚡ Building event-driven components with Kafka , RabbitMQ , or Azure Service Bus for real-time processing
• Owning system performance, reliability, and scalability — including monitoring, tuning, and fault tolerance
• Collaborating with Product, Platform, and Security teams to build compliant, scalable payment systems
• Driving engineering excellence — CI/CD, testing, observability, and automation across the stack

Tech Stack

• C#.NET Core , REST/gRPC, microservices architecture
• Kafka , RabbitMQ , or Azure Service Bus (event-driven systems)
• ☁️ Azure / AWS , Docker / Kubernetes , IaC, CI/CD ( Azure DevOps , GitHub Actions )
• ️ SQL Server / PostgreSQL , caching / NoSQL experience welcome
• xUnit / NUnit , contract testing , OpenTelemetry , Grafana / Prometheus , ELK Stack

What We’re Looking For

• ✅ Strong backend engineering experience using C#.NET Core
• Solid knowledge of event-driven architectures and message brokers (Kafka, RabbitMQ, etc.)
• Deep understanding of distributed systems , scalability, and resilience
• Background in payments , fintech , or other high-throughput, regulated environments is a big plus
• Self-starter who enjoys autonomy, collaboration, and greenfield problem-solving

What’s on Offer

• £130,000 base salary + strong bonus + excellent benefits
• Hybrid working — typically 3 days per week in the London office
• Join a brand-new Payments team with huge impact and full technical ownership
• Great culture with collaboration, innovation, and genuine career growth

Interested?

Send your CV to [email protected] or reply directly to this advert — let’s have a chat!