Senior Security Engineer

TRIA; Greater London; Hybrid; GBP 90,000 - 120,000; Full time

Job summary

TRIA in Central London is seeking a hands-on Senior Cyber Security Engineer to strengthen cyber defence across a complex international environment. You’ll own detection engineering, incident response, vulnerability management and secure cloud configuration to protect critical systems.

This hybrid role is based in Central London with one day per week on-site. You will lead investigations, drive remediation plans and collaborate with multi-region stakeholders to reduce risk and improve security

Qualifications

• Experience across cloud, hybrid and on-prem security operations.
• Proven incident response and major incident management experience.
• Strong detection engineering and automation focus.
• Experience turning findings into remediation plans.

Responsibilities

• Lead detection engineering and threat monitoring.
• Coordinate incident response and post-incident improvements.
• Oversee vulnerability management and remediation planning.
• Collaborate with multi-region stakeholders to improve security posture.

Skills

Cyber security ops

Incident response

Major incident mgmt

Detection engineering

Automation

Security monitoring

Vulnerability management

Tools

Microsoft Sentinel

Microsoft Defender

Azure security tooling

Job description

Hybrid working – Central London 1 day per week

About the role

A dynamic global organisation is looking for a hands-on Senior Cyber Security Engineer to help strengthen their cyber defence across a complex international environment. You’ll be right at the centre of detection engineering, incident response, vulnerability management and secure cloud configuration - protecting the systems that support communities around the world.

What we are looking for

• Strong experience in cyber security operations across cloud, hybrid and on-prem environments.
• Confidence leading incident response and major incident management, triage, containment and post-incident improvement activity.
• A sharp eye for detection engineering and automation, threat behaviours and security monitoring gaps.
• Experience supporting vulnerability management and turning findings into practical remediation plans.
• Clear communication skills, with the ability to engage both technical teams and senior stakeholders.

Tech stack you will use:

• Microsoft Sentinel
• Microsoft Defender suite, including Endpoint, Identity, Cloud and Vulnerability Management
• KQL for detection logic, investigations and reporting
• Logic Apps and SOAR automation workflows
• Azure and wider cloud security tooling

What's on offer for you:

• High-impact cyber role in a global, purpose-led organisation.
• Real ownership across detection, response, vulnerability management and secure configuration.
• Exposure to complex international environments and multi-region stakeholders.
• Clear career progression