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Senior Back-End Developer - .NET / C#

Robert Half International — United Kingdom · Posted ~5 hours ago

Senior Hybrid

Skills

C# .NET microservices REST APIs PostgreSQL Redis Kubernetes Docker Google Cloud CI/CD automated testing observability payment systems FX services mentoring GKE

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Summary ✨ AI‑Generated

Join a fast-growing fintech engineering team as a senior backend specialist. You will own C#/.NET microservices, APIs, data models, and secure payment and foreign-exchange services while working with PostgreSQL, Redis, Kubernetes, cloud infrastructure, CI/CD, testing, and observability.

Highlights

High-autonomy senior engineering role with ownership of platform architecture, secure financial services, engineering standards, reliability, and mentoring.

Description

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 microservicesDesign APIs, integrations and data modelsDevelop secure, scalable payment and FX servicesWork with PostgreSQL, Redis and Kubernetes/GKEImprove CI/CD, testing, observability and reliabilityLead code reviews and mentor other developersWork closely with DevOps, Product and Operations Requirements Strong commercial C#/.NET experienceMicroservices and REST API expertiseStrong PostgreSQL and Redis knowledgeExperience with Kubernetes / Docker / CloudStrong testing and CI/CD backgroundTechnical leadership or mentoring experienceFintech/payments experience highly advantageous Package Hybrid working | 25 days holiday + bank holidays | Senior seat at the table