Senior Back-End Developer - .NET / C# -High Growth SaaS in London - Robert Half

Senior Back-End Developer - .NET / C#

Are you looking for a new challenge?

Looking for autonomy and a seat at the table?

London | Hybrid | Fintech

The Role

A fast-growing fintech is building a new in-house engineering team and is looking for a Senior Back-End Developer to become a key technical hire.

You'll take ownership of a modern platform built with C#/.NET microservices, PostgreSQL, Redis and Google Cloud, helping shape architecture, engineering standards and future development.

Key Responsibilities

• Build and maintain C#/.NET microservices
• Design APIs, integrations and data models
• Develop secure, scalable payment and FX services
• Work with PostgreSQL, Redis and Kubernetes/GKE
• Improve CI/CD, testing, observability and reliability
• Lead code reviews and mentor other developers
• Work closely with DevOps, Product and Operations

Requirements

• Strong commercial C#/.NET experience
• Microservices and REST API expertise
• Strong PostgreSQL and Redis knowledge
• Experience with Kubernetes / Docker / Cloud
• Strong testing and CI/CD background
• Technical leadership or mentoring experience
• Fintech/payments experience highly advantageous

Package

Hybrid working | 25 days holiday + bank holidays | Senior seat at the table

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