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:
- 8+ years commercial experience in Python or Java across the full development lifecycle
- 5+ years in financial services (buy-side strongly preferred)
- Solid relational database skills; MS SQL Server a strong plus
- Snowflake experience required
- Familiarity with AWS (S3, Lambda, EC2, Glue or similar)
- Proficiency with Git, CI/CD pipelines, and observability tooling (e.g. Datadog)
AI & Tooling:
- Proven, hands-on experience shipping production code using AI coding assistants such as Claude, Cursor, or GitHub Copilot
- Demonstrable examples where AI tooling reduced delivery time by 2x or more on a meaningful task
- Strong prompt engineering skills and the ability to critically evaluate AI-generated code for correctness, security, and financial accuracy
Desirable, but no essential:
- Experience with Apache Airflow or similar workflow schedulers
- REST or GraphQL API design experience
- Knowledge of fixed income, FX, or derivatives products and associated P&L/risk methodologies