Sr Python Developer - Trading / Risk Platforms - CRISIL
CRISIL Limited
Charing Cross, United Kingdom
2 days ago
Role details
Contract type
Permanent contract Employment type
Full-time (> 32 hours) Working hours
Regular working hours Languages
English Experience level
SeniorJob location
Charing Cross, United Kingdom
Tech stack
Bash
Big Data
Unix
Code Coverage
Code Review
Data Structures
Database Queries
Software Debugging
Django
Python
Linux System Administration
NumPy
Performance Tuning
Shell Script
Data Processing
Scripting (Bash/Python/Go/Ruby)
Flask
Backend
FastAPI
Pandas
PySpark
Integration Tests
REST
Data Pipelines
Job description
- 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
Requirements
- 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 RESTfulAPIs/services (Flask / FastAPI / Django)
- Strong understanding of data structures and performance optimization
- Experience working with large-scale data processing and performance optimization
- Working knowledge ofUnix / Linux environments and basic shell scripting
Domain Experience (Critical)
- Experience working in Investment Banking / Capital Markets environments
- Hands-on exposure to:
- Market Risk / CCR / PnL / Trade lifecycle / Reconciliation
- Understanding of financial products such as:
- Derivatives (swaps, futures, options), bonds
Good-to-Have
- Exposure to PySpark or large-scale data processing
- Experience working with quants or pricing models
- Basic scripting (Unix / Bash)
- Prior experience in global banking environments
Experience
- ~7-12 years of experience