Marsh McLennan · 4 months ago
IT Lead Security Specialist
London - Baker
Full-time
Hybrid
Senior Level
7+ years expOliver Wyman, part of Marsh McLennan, is seeking an IT Lead Security Specialist to enhance their cybersecurity strategy. The role involves designing security controls, assessing risks, and ensuring compliance with security policies while collaborating with various teams to protect critical assets.
Financial ServicesProfessional ServicesService Industry
Responsibilities
Partner with the OWG CISO to design and execute a risk-based cybersecurity strategy aligned with OWG’s distinct business operating model
Enable business teams to navigate firm-wide policies and standards, leveraging risk-informed exceptions when justified in meeting OWG’s differentiated needs
Lead risk review processes, guiding appropriate treatment planning in collaboration with stakeholders
Monitor and continually improve key security risk metrics, ensuring a focus on the reduction of risks to OWG’s platforms and applications
Advocate for tailored security solutions that meet OWG’s unique business needs while maintaining enterprise-wide risk management practices
Participate in the Architecture Review Board (ARB), actively evaluating designs and decisions. Provide risk-based recommendations informed by security architecture principles, fostering secure and scalable design solutions
Lead the pre-screening assessments for new tools and technologies, ensuring compliance with OWG security standards within defined timelines (e.g., 3 business days)
Identify, assess, and communicate security risks and threats to OWG’s cloud environments and IT infrastructure
Lead initiatives to adopt and mature system security practices, such as multi-factor authentication, encryption-at-rest, and advanced logging capabilities
Coordinate with engineering teams to ensure risks are mitigated swiftly in line with predefined SLAs
Evaluate and remediate technical debt associated with legacy security controls, prioritizing resolutions based on risk impact
Partner with engineering and IT teams to address obsolescence risks and implement sustainable security measures
Collaborate with acquisition teams during due diligence, assessing cybersecurity risks and proposing mitigations
Review and analyze due diligence reports, offering strategic input on alignment with OWG security policies
Guide secure integration planning and execution for post-acquisition scenarios
Qualification
Required
B.S. in Cybersecurity, Information Technology, Business Administration, or a related field preferred
7+ years of experience in cybersecurity, with a focus on risk management, security advisory, and cloud security
Extensive experience with IT platforms and infrastructure including public and hybrid cloud environments
Extensive experience in security controls, technologies, and threat countermeasures
Demonstrated experience in assessing and managing vendor and third-party cybersecurity risks
Excellent written and oral communication skills, with the ability to convey complex security concepts to non-technical stakeholders
Advanced knowledge of security risks, risk management best practices, and the ability to develop risk-informed strategies
Strong understanding of security frameworks (e.g., NIST, ISO 27001) and governance practices relevant to multinational organizations
Excellent communication skills in English is a must
Benefits
Professional development opportunities
Interesting work
Supportive leaders
A vibrant and inclusive culture
A range of career opportunities
Benefits and rewards to enhance your well-being
Company
Marsh McLennan
Marsh McLennan (NYSE: MMC) is a global leader in risk, strategy and people, advising clients in 130 countries across four businesses: Marsh, Guy Carpenter, Mercer and Oliver Wyman.
10001+ employees
H1B Sponsorship
Marsh McLennan has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (4)
2024 (2)
2023 (8)
2022 (6)
2020 (11)
Funding
Current Stage
Public CompanyTotal Funding
$11.2B2024-10-30Post Ipo Debt· $7.25B
2024-02-14Post Ipo Debt· $1B
2023-09-06Post Ipo Debt· $1.6B
Leadership Team
Joe Hayes
Senior Vice President, COO Private Client Services
Katherine Brennan
SVP & General Counsel
Recent News
2025-12-01
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