Senior Manager - Third Party Assurance FTC
Job Type
Contract/Temporary
Location
City of London, London
Salary
Negotiable
Job Ref
BBBH171120_1764774159
Date Added
December 3rd, 2025
Consultant
Heather Thompson
Info sec manager - Third Assurance - 12‑Month FTC
Location: London (Hybrid: ~2 days/week on‑site)
Fixed term contract duration: 12month (annual salary)
A global law and professional service firm is seeking an experienced Information Security professional to lead and embed a robust Supplier/Third‑Party Assurance model, ensuring the firm maintains and evidences controls for ISO 27001 and client audits. You'll report into the Senior Security Manager, collaborate with stakeholders across Security Operations, GRC and Identity, and contribute to globally consistent practices.
Responsibilities:
- Own & champion the Supplier Assurance Security Model, working closely with senior security leadership.
- Produce MI for the CISO (trends, process gaps, recommendations) to drive continuous improvement.
- Manage client requests and due diligence questionnaires, escalating complex items appropriately
- Run governance forums for Supplier Assurance and track actions to closure.
- Maintain the Third‑Party Security Schedule and support supplier negotiations on security requirements.
- Edit/agree straightforward security clauses in contracts to ensure robustness.
- Provide audit evidence to support ISO 27001 certification from a supplier assurance perspective.
Requirements:
- Solid experience in Leadership Information Security Supplier/Third‑Party Assurance roles.
- Background in legal or financial services environments (medium to large organisations).
- Broad understanding across security domains (Ops, GRC, Identity, third‑party security).
- Desirable: CISSP, CISM, ISO 27001 certifications.
- Strong stakeholder management, negotiation, and written/verbal communication skills.
- Proven ability to prioritise and deliver to deadlines in a fast‑paced environment.
If you're interested in supporting a global law firm's security. Please apply with an updated CV to get the conversation rolling.
Guidant, Carbon60, Lorien & SRG - The Impellam Group Portfolio are acting as an Employment Business in relation to this vacancy.
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