Contract Senior Software Engineer (Java or Python)

Contract Senior Software Engineer (Java or Python) | Inside IR35

Contract length: 6 months (with potential to extend)
Location: London
Working Environment: On-site

You will be joining aprivate equity firm as a senior software engineer, to work across the following responsibilities:

• Develop and support P&L, accounting, and returns-calculation applications across trading books
• Build and extend our Client Reporting Framework
• Add instrument and asset class coverage in our Trade Repository system
• Manage data exchange with third-party vendors via SFTP and AWS S3
• Use AI coding assistants (Claude, Cursor, GitHub Copilot) to compress delivery timelines while maintaining full code ownership and quality accountability
• Collaborate with quant researchers and traders to translate complex financial requirements into auditable, production‑grade code
• Provide production suppo...