Senior Software Engineer
XpansivLondon, England, United Kingdom
Posted September 24, 2025
85000 - 100000 GBP year
Full Time
About the Company
Xpansiv operates the world's largest integrated, open, and neutral market infrastructure for the global energy transition. Through its comprehensive technology platform, Xpansiv connects diverse markets and participants worldwide, offering services such as environmental commodities, renewable energy, carbon offsets, and digital fuels. The company plays a pivotal role in scaling the energy transition by providing exchanges, portfolio management systems, and other essential tools for market data, ESG reporting, and trading platforms.
Job Description
Xpansiv is seeking a Senior Software Engineer to maintain, troubleshoot, and extend mission-critical financial systems built on legacy technologies, while interacting with modern infrastructure. The role involves ownership of the project and team, ensuring stable deployment and operation of older systems, and contributing to cloud administration. This position requires experience in both PHP and ASP.NET.
Requirements
- Develop secure and performance optimized code.
- Provide ongoing support, maintenance, and debugging for legacy applications.
- Collaborate with development and DevOps teams.
- Investigate and resolve performance, stability, and integration issues.
- Write SQL Server queries and optimize indexes.
- Contribute to basic cloud administration.
- Understand complex financial requirements.
- Mentor junior staff.
Benefits
- Competitive Compensation
- Equal Employment Opportunity
