Senior Python Backend Architect for Trading & Risk

Crisil; Greater London; On-site; GBP 90,000 - 130,000; Full time

Job summary

Crisil is seeking senior Python developers to design and implement backend systems for trading and risk management in investment banking. You will build data processing pipelines, automate workflows, and integrate REST APIs to support PnL, risk, and reporting.

The role requires collaboration with quants, traders and risk teams, and mentoring junior engineers. Ideal candidates have strong Python, SQL, and data processing skills, and experience with Unix/Linux environments.

Qualifications

• Strong exposure to enterprise-grade front-office trading and risk platforms with integration across pricing, risk and trade lifecycle workflows
• 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
• Experience working in Investment Banking / Capital Markets environments
• Market Risk / CCR / PnL / Trade lifecycle / Reconciliation

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
• Ensure high code quality and test coverage
• Participate in code reviews and mentor junior developers where required

Skills

Python

SQL

Data processing

REST APIs

Unix/Linux

Pandas/Numpy

Tools

Flask

FastAPI

Django

Job description

Crisil is seeking senior Python developers to design and implement backend systems for trading and risk management in investment banking. You will build data processing pipelines, automate workflows, and integrate REST APIs to support PnL, risk, and reporting.

The role requires collaboration with quants, traders and risk teams, and mentoring junior engineers. Ideal candidates have strong Python, SQL, and data processing skills, and experience with Unix/Linux environments.