Contract Senior Software Engineer (Java or Python)
SoCode Limited
Full-time
architecture-and-engineering
Location
Baker Street, Greater London, Greater London, United Kingdom
Posted
May 23, 2026
Job Description
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 a private 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 support, working with Platform and SRE teams as needed Key Requirements:
Technical:
Contract length: 6 months (with potential to extend)
Location: London
Working Environment: On-site
You will be joining a private 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 support, working with Platform and SRE teams as needed Key Requirements:
Technical: