Senior ERM Developer – Inside IR35 – Reinsurance

Company: Lorien
Apply for the Senior ERM Developer – Inside IR35 – Reinsurance
Location: London
Job Description:

Job Type

Contract/Temporary

Location

City of London, London

Job Ref

BBBH184373_1779786799

Date Added

May 26th, 2026

Consultant

Heather Thompson

Senior ERM / Exposure Management Developer

Location: London – 2 days per week into the City of London

Day rate: 750 Inside IR35

Duration: 6 months (potential extension)

A global (re)insurance organisation is seeking a Senior Full Stack Developer to support and enhance enterprise ERM / Exposure Management platforms . This contract role focuses on maintaining and modernising legacy systems while building backend services and integrations within a highly specialised risk environment.

Key Responsibilities

  • Develop and enhance full‑stack applications, including new features and system improvements
  • Support and refactor legacy platforms, ensuring performance, scalability and stability
  • Troubleshoot complex production issues across business‑critical systems
  • Design and integrate REST APIs and third‑party services, including exposure/cat modelling tools
  • Collaborate with business and technical stakeholders in an agile delivery environment

Key Experience Required (Essential)

  • Proven experience within (re)insurance environments
  • Hands-on experience in Exposure Management / catastrophe modelling platforms , including working with modelled risk at account or portfolio level
  • Experience integrating with catastrophe modelling tools or APIs (e.g. AIR Touchstone, RMS, Analyse Re)
  • Solid knowledge of SQL Server and T-SQL, with strong debugging and optimisation skills
  • Experience with cloud platforms (AWS/Azure) and DevOps tooling
  • Familiarity with agile delivery and modern development practices

Please note: This is a specialist role – candidates must have prior experience within (re)insurance and exposure/catastrophe modelling environments to be considered.

Work at the heart of global risk systems-where your experience with exposure and catastrophe modelling will be genuinely valued and put to immediate use.

Guidant, Carbon60, Lorien & SRG – The Impellam Group Portfolio are acting as an Employment Business in relation to this vacancy.

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Posted: May 30th, 2026