Financial Software Engineer

Company: Apex Systems
Apply for the Financial Software Engineer
Location: London
Job Description:

FRTB (Fundamental Review of the Trading Book)

  • Global regulatory initiative with compressed US timelines
  • Requires rapid iteration, testing, and validation of risk models and calculations

Strategic Risk on P&L

  • Internal regulatory-driven transformation programme
  • Focused on:
  • VaR (Value at Risk) methodology redesign
  • High complexity across enterprise risk and finance systems

Role Reality: What This Job Actually Is

  • This is not a traditional BA role

Actual split

  • 80% Developer / Technical / Data work
  • 20% BA / coordination / requirements interpretation
  • Candidates will:
  • Work directly with risk data, pricing, and calculations
  • Troubleshoot and reproduce risk and P&L outputs
  • Write Python code regularly
  • Participate in technical design and validation discussions

Core Responsibilities

Technical (Primary Focus)

  • Use Python to:
  • Reproduce risk and pricing calculations
  • Breaks in P&L and risk outputs
  • Data inconsistencies and calculation discrepancies
  • Work with risk/pricing platforms via APIs:
  • Support testing and validation of regulatory implementations

BA / Functional (Secondary Focus)

  • Translate regulatory requirements into:
  • Practical implementation approaches
  • Technical and functional specifications
  • Map:
  • End-to-end risk workflows
  • Data lineage and control frameworks
  • Act as liaison between:
  • Risk / Quant teams
  • Engineering teams

Required Skills

Technical (Non-Negotiable)

  • Strong Python (core requirement)
  • Experience working with:
  • Analytical/computational systems
  • Ability to:
  • Debug calculations
  • Investigate production issues
  • Work hands-on with datasets

Domain Knowledge

  • Financial services background (essential)
  • Exposure to:
  • Credit risk / capital / liquidity
  • Understanding of:
  • VaR
  • Regulatory frameworks (Basel / FRTB preferred)

Analytical & Behavioural

  • Strong problem-solving / investigative mindset
  • Ability to explain complex results and discrepancies
  • Comfortable operating in complex, large-scale regulated environments
  • Able to engage in technical design conversations, not just requirements gathering

Technology Environment

  • Enterprise risk/pricing platforms (internally built or similar to industry frameworks)
  • API-driven architecture for risk calculations
  • Limited cloud usage – more traditional internal platforms

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Posted: July 6th, 2026