Senior Security Engineer (Team Lead)

The Role

The Senior Security Engineer (Team Leader) is responsible for leading a dedicated security engineering team, combining hands-on platform engineering with technical leadership and people management.

You will own security platform architecture, act as the primary escalation point for complex issues, and ensure platforms remain secure, resilient, and compliant within a regulated environment.

Key Responsibilities

Act as technical lead for security engineering and platform architecture

Serve as primary escalation point for complex and major incidents

Provide technical leadership and mentoring to engineers and analysts

Line manage and develop the security engineering and analyst teams

Own platform maintenance, configuration, and lifecycle management

Ensure security platforms are integrated across hybrid environments

Oversee patching, upgrades, and platform performance

Drive platform improvements and engineering enhancements

Support detection engineering, tuning, and platform optimisation

Lead automation and SOAR initiatives to improve efficiency

Collaborate with SOC providers on SIEM governance and data ingestion

Ensure platforms meet regulatory and compliance requirements

Maintain engineering documentation, standards, and governance

Represent engineering in client governance and audit activities

Coordinate cross-team resolution of complex technical issues

Experience & Knowledge

Essential

Significant experience in security engineering and platform management

Strong leadership experience managing technical teams

Deep knowledge of Microsoft Defender and SIEM platforms (e.g. Sentinel)

Experience in hybrid cloud and on-prem environments

Strong understanding of security architecture and frameworks

Experience in regulated environments (e.g. financial services)

Strong stakeholder and client engagement skills

Experience with automation and scripting (PowerShell, Python, etc.)

Desirable

Experience with vulnerability and exposure management tools

Knowledge of security frameworks (NIST, ISO 27001, CIS)

Relevant security certifications (e.g. CISSP, AZ-500, SC-100)