Senior Python Developer - Trading & Risk Platforms (Hybrid)

ScaleneWorks People Solutions LLP; Greater London; Hybrid; GBP 90,000 - 130,000; Full time

Job summary

ScaleneWorks People Solutions LLP in London is seeking a Senior Python Developer for trading and risk platforms to join a major financial services client. The role is hybrid, requiring 2-3 days in the office.

You will develop Python-based applications, build data pipelines, and work with large financial datasets to support PnL, risk and reporting. Collaboration with quants, traders and risk teams, API development, and contributing to CI/CD and production support are key parts of the role.

Qualifications

• Strong experience in Core Python development (6–10 years).
• Strong SQL skills with ability to handle complex queries and large datasets
• Experience with Python libraries (Pandas, NumPy) for data processing
• Experience building RESTful APIs/services (Flask / FastAPI / Django)
• Strong understanding of data structures and performance optimization
• Experience working with large-scale data processing and performance optimization
• Working knowledge of Unix / Linux environments and basic shell scripting
• Investment Banking / Capital Markets environments experience (Domain Experience)
• Market Risk / CCR / PnL / Trade lifecycle / Reconciliation (Domain Experience)
• Good-to-have: PySpark or large-scale data processing
• Good-to-have: pricing models
• Good-to-have: Unix / Bash scripting
• Good-to-have: global banking environments

Responsibilities

• Develop and enhance Python-based applications for trading and risk use cases
• Build data processing pipelines and automation scripts for trade, risk and reconciliation workflows
• Work with large financial datasets to support PnL, risk and reporting requirements
• Contribute to system design, architecture and scalability decisions
• Collaborate with quants, traders and risk teams to translate business requirements into technical solutions
• Develop and integrate REST APIs and backend services
• Contribute to CI/CD pipelines and deployment processes
• Support production systems (L2/L3) including debugging, enhancements and performance optimization
• Write and maintain unit and integration tests. Ensure high code quality and test coverage
• Participate in code reviews and mentor junior developers where required

Skills

Core Python

SQL

Pandas

NumPy

REST APIs

Unix/Linux

Data structures

Large-scale data processing

Tools

Git

CI/CD

Job description

ScaleneWorks People Solutions LLP in London is seeking a Senior Python Developer for trading and risk platforms to join a major financial services client. The role is hybrid, requiring 2-3 days in the office.

You will develop Python-based applications, build data pipelines, and work with large financial datasets to support PnL, risk and reporting. Collaboration with quants, traders and risk teams, API development, and contributing to CI/CD and production support are key parts of the role.