Senior Back-End Developer - .NET / C# -High Growth SaaS
Robert Half
Overview
As a Senior Back-End Developer in a fast-growing fintech, you will own the design and delivery of C#/.NET microservices that power payment and FX services. You’ll shape architecture, engineering standards, and CI/CD practices while collaborating with DevOps, Product, and Operations. You work with PostgreSQL, Redis, Kubernetes/GKE, and Google Cloud to build secure, scalable systems. This is a hands-on role with leadership responsibilities, including code reviews and mentoring, within a team that values autonomy and technical excellence. The opportunity offers hybrid work in London and a senior seat at the table to influence critical platform decisions.
Pay / Benefits- Hybrid working
- 25 days holiday + bank holidays
- Senior seat at the table
- 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
- Collaborate with DevOps, Product and Operations
- 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
- leadership or mentoring experience
- cross-functional collaboration
- problem-solving and initiative
- C#/.NET
- Microservices
- REST API
Reference: WJ-747_30858985