Senior Information Security Engineer

Company: Selby Jennings
Apply for the Senior Information Security Engineer
Location: Greater London
Job Description:

Our client, a leading global hedge fund, is seeking an experienced Information Security professional for a senior, high‑impact role focused on strengthening security across network, cloud, data, and systems environments. This great opportunity is ideal for someone joining a growing, technology‑first team. The role serves as a key escalation point for complex security challenges and shapes the organisation’s security roadmap.

Key Responsibilities

  • Enhance security across core domains including network, system, email, cloud, and data security.
  • Act as a security advisor for major IT projects, ensuring risks are identified, managed, and mitigated.
  • Manage and optimise a broad suite of security tools to ensure effective deployment and ongoing operation.
  • Lead the design and implementation of security solutions and architectures protecting critical assets.
  • Provide second‑line support for Security Operations, acting as an escalation point for complex issues.
  • Conduct threat modelling and risk assessments to identify vulnerabilities and define mitigation strategies.
  • Oversee the relationship with the Managed Detection & Response (MDR) provider to ensure continuous improvement.
  • Deliver key initiatives on the security roadmap, aligned to business objectives and evolving threats.
  • Collaborate with cross‑functional teams to promote security awareness and integrate best practices across the business.

Required Qualifications

  • 10 years’ experience in information security roles such as security engineering, architecture, operations, or application security.
  • Hands‑on experience with threat modelling, penetration testing, and automated security validation.
  • Strong understanding of cloud, network, and systems security principles.
  • Scripting experience in at least one language; Python or PowerShell preferred.
  • Familiarity with security technologies including EDR, DLP, vulnerability scanners, firewalls, and email gateways.
  • Strong analytical and problem‑solving skills, capable of addressing complex issues and designing practical solutions.
  • Excellent communication skills with the ability to partner effectively with both technical and non‑technical teams.
  • Degree in Computer Science, Engineering, or a related STEM discipline.

Nice to Have

  • Deep knowledge of risk assessment methodologies.
  • Exposure to security best practices across Azure, AWS, and GCP.
  • Ability to analyse software for security risks, including code review, SAST/DAST, and identifying vulnerabilities in application design.
  • Familiarity with regulatory frameworks (e.g., SEC Cybersecurity rules, MAS TRM Guidelines, NFA Cybersecurity Guidance, GDPR).
  • Relevant security certifications.

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Posted: March 11th, 2026