Security Engineer

Responsibilities

• Engineer security products to be production-ready and monitor toolsets to identify potential incidents, network intrusions, and malware events.
• Drive proactive threat hunting to identify emerging threats, anomalous behavior, and gaps in existing controls.
• Develop, tune, and maintain detection logic across SIEM, EDR, and cloud security platforms.
• Contribute to SOC automation initiatives, improving efficiency through playbooks, enrichment, and workflow optimization.
• Collaborate with technology teams for incident handling, patching disciplines, and system hardening frameworks.
• Manage relationships with external partners, MSSPs, threat intelligence providers, and technology vendors.
• Develop and document cyber security standards, procedures, and high-quality runbooks.
• Monitor the effectiveness of security controls and recommend improvements based on threat trends.
• Support operational resilience activities, including scenario testing and tabletop exercises.

Requirements

• Minimum of 8 years of experience in Cyber Security, specifically dealing with incidents in Financial Services or Technology Services.
• Detailed understanding of the Kill Chain and Mitre Attack & Defend Frameworks.
• Expertise in SIEM, PAM, EDR, log analysis, and Incident Response.
• In-depth knowledge of technologies including Entra, TLS, IDS, Identity Protection, DLP, WAF, DMARC, AV/EDR, XDR, and CNAPP.
• Strong understanding of Windows, Linux, and Public Cloud environments.
• Experience working within highly regulated environments.
• Excellent communication skills with the ability to engage effectively with stakeholders.

About the Company

Marex has unique access across markets with significant share globally both on and off exchange. The depth of knowledge amongst its teams and divisions provides its customers with a clear advantage, and its technology-led service provides access to all major exchanges, order-flow management, and award-winning data, insights, and analytics.