OverviewPython Developer - sought by leading investment bank based in Canary Wharf - Contract - Hybrid

Key Responsibilities

Develop and optimize Python calculators for:

Historical index back-testing

Daily pricing and index computation

Weighting and rebalancing logic

Attribution and decomposition analytics

Build robust APIs using

FastAPI

or

Flask

Collaborate directly with business users to gather requirements and iterate quickly

Implement testing, versioning, and data validation processes

Ensure integration with internal data sources and reporting tools

Required Skills

5+ years of Python development experience, ideally in financial services or commodities

Strong proficiency in

Pandas ,

NumPy , and time-series data manipulation

Proven experience with

FastAPI

or

Flask

Familiarity with large datasets and real-time data pipelines

Excellent debugging, profiling, and performance optimization skills

Strong communication skills and ability to work with non-technical stakeholders

Preferred Skills

Experience with commodities indices or structured products

Knowledge of market data platforms (e.g., Bloomberg, Refinitiv)

Exposure to

Docker ,

AWS/GCP , and database systems (SQL/NoSQL)

Please apply within for further details - Matt Holmes, Harvey Nash

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