Junior Python Developer – Risk Data Services (Business-Facing)

Company: Lorien
Apply for the Junior Python Developer – Risk Data Services (Business-Facing)
Location: London
Job Description:

London | Hybrid | 50% on site

We’re looking for a Python Developer with strong analytical and business-facing skills to join our Risk Data Services team. This is a great opportunity to work at the heart of a global investment bank, supporting critical risk systems that drive decision-making across the organisation.

About the Team

You’ll be joining the Data Services team within Risk ERA Systems, responsible for the end-to-end data integration pipeline — from front office systems through to the risk data warehouse. This data directly feeds risk calculations, reporting, and decision-making, making your role central to the organization.

The Role

As part of a dynamic Agile (SAFe) team, you’ll help build and enhance a data integration platform that underpins market and counterparty risk calculations.

You’ll work closely with Risk analysts and Product Owners, translating business requirements into scalable, high-performance Python solutions — so strong business analysis capability is essential alongside your technical skills.

What You’ll Be Doing

  • Designing, developing, and maintaining Python-based data processing applications
  • Building data pipelines to ingest, transform, and validate large data sets
  • Collaborating with business stakeholders to analyse requirements and define technical solutions
  • Rapid prototyping to test new concepts and improve delivery speed
  • Optimising performance and ensuring reliability of data integration processes
  • Working with SQL and data warehouse technologies
  • Identifying issues, debugging, and improving system quality
  • Supporting continuous improvement within an Agile team

What We’re Looking

  • For 2+ years of Python development experience
  • Proven ability to work in a business-facing / business analyst capacity (gathering requirements, translating into solutions)
  • Object-oriented programming
  • Data structures and scalable application design
  • Experience with SQL and relational databases
  • Strong analytical and problem-solving skills
  • Ability to communicate effectively with both technical and non-technical stakeholders
  • Exposure to financial services, risk, or data platforms
  • Understanding of data pipelines / ETL processes
  • Experience with Agile / Scrum environments
  • Knowledge of market or counterparty risk

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Posted: July 13th, 2026