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# Senior Software Engineer

- **Company:** Harrington Starr
- **Location:** UK (Remote available)
- **Experience:** Expert
- **Salary:** £110,000.0
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), .NET Framework, C Sharp (Programming Language), Data Structures, Test-Driven Development (TDD)
- **Published:** September 10, 2026
- **Apply:** https://www.apply4u.co.uk/jobs/senior-software-engineer/46539338

## About the Role

top-tier engineers in a high-performance environmentWhat You'll DoLead new feature development from concept to productionDesign and build low-latency, high-performance systemsMaintain and improve existing services while introducing new functionalityTroubleshoot and resolve production issuesEnhance development and operations processesContribute to architecture and system designParticipate in an out-of-hours support rotationWhat You'll NeedExpertise in C# / .NET (or a willingness to cross-train from Java)Experience with Test-Driven Development (TDD)Background in high-performance, low-latency applicationsIndustry experience in finance or other mission-critical sectorsStrong understanding of complex data structures, concurrency, and garbage collectorsAbility to work independently and collaborativelyUK right to work (no sponsorship available)Find Out MoreFor a confidential conversation about this opportunity (or similar roles in fintech), contact Con Lam at Harrington Starr: Apply below or
connect on LinkedIn.Seniority levelMid-Senior levelEmployment typeFull-timeJob functionInformation TechnologyIndustriesFinancial Services and Investment Banking #J-18808-Ljbffr



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