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# Senior Software Engineer

- **Company:** Days Onsite Harrington Starr
- **Location:** London, UK
- **Experience:** Expert
- **Salary:** £140,000.0
- **Contract:** Permanent contract
- **Skills:** .NET Framework, Application Programming Interfaces (APIs), Amazon Web Services, Data Analysis, Automation of Tests, Microsoft Azure, C Sharp (Programming Language), Cloud Computing, Continuous Integration, DevOps, Distributed Systems, Software Architecture, OpenLink Endur, Standard Sql, Systems Integration, Spring Cloud
- **Published:** September 21, 2026
- **Apply:** https://www.apply4u.co.uk/jobs/senior-software-engineer/47693771

## About the Role

automation, observability, deployment processes and DevOps maturity What We're Looking For: Strong C#/.NET development experience Expertise in APIs, integrations and distributed systems Experience building cloud-native applications Strong understanding of software architecture, scalability, resilience and security Experience with AWS and/or Azure Strong SQL and data analysis skills Experience with CI/CD and automated testing Proven experience leading complex technical initiatives in business-critical environments Excellent stakeholder management and communication skills Experience mentoring and supporting other engineers Background in energy trading, LNG, commodities or ETRM/CTRM is highly desirable Experience with Endur, EOS or other energy trading platforms is advantageous Benefits: Opportunity to work on technology supporting a global energy trading business Senior-level ownership and influence over technology direction Exposure to modern cloud, DevOps and engineering practices Strong
focus on professional development and technical growth Flexible total rewards and employee support If you're a Senior Engineer with strong C#/.NET, cloud, APIs and distributed systems experience and are interested in LNG and energy trading technology, we'd love to hear from you.