Senior Software Engineer
Senior Software Engineer (.NET, C#, Java)
£90,000 - £100,000
Office Location: Central London (Hybrid)
We have partnered up with one of the largest Saas businesses that help numerous FinTech organisations across the UK and EU.
This Senior Software Engineer will join a high-impact team building a next-generation analytics platform designed to ingest, transform, and materialise massive observability datasets. This is a hands-on role for an engineer who excels at building complex distributed systems
Key Responsibilities
- Core Development: Design and deploy high-performance backend services and APIs using C#/.NET, focusing on sub-millisecond reliability and global scalability.
- System Integration: Own technical integrations across internal and external platforms using gRPC, REST, and messaging standards (OAuth2/OpenID).
- Engineering Excellence: Champion automated testing, code reviews, and an "observability-first" mindset (metrics, logs, traces) with defined SLOs.
- Architecture & DevOps: Contribute to CI/CD pipelines and Infrastructure-as-Code (Terraform/Helm) to ensure production readiness and resilient container orchestration.
Technical Environment & Requirements
- Backend Expertise: 8+ years of professional experience with C# / .NET (ASP.NET, MSSQL) and building complex distributed systems in production.
- Integration Mastery: Deep knowledge of REST/gRPC, SDKs, and identity standards (OAuth2, SAML) for cross-platform communication.
- Systems Design: Proven ability to design for high availability and partition tolerance; strong understanding of concurrency and asynchronous programming.
- Modern Tooling: Proficiency with Git, CI/CD, and AI-assisted development workflows to drive efficiency.
- Bonus Skills: Familiarity with the Java/JVM ecosystem (Spring Boot), Kubernetes , and cloud providers ( AWS/Azure ).
What We Offer
- Comprehensive Health: Private Health and Dental cover for you and your dependents.
- Financial Security: Competitive Pension, Life Assurance, and Income Protection.
- Work-Life Balance: Flexible hybrid working model and the option to buy/sell holiday.
- Professional Growth: Generous training reimbursement and a track record of internal promotion.
Get in touch! Apply now!