Senior Cyber Security Analyst: Incident Response Leader

Lumentum; Towcester; On-site; GBP 85,000 - 100,000; Full time

Benefits offered by this job

Influence enterprise security

Exposure to cloud security

Collaborative team environment

Professional development

Job summary

Lumentum is seeking a Senior Information Security Analyst to join our global security team in a role focused on protecting people, data and operations. You will lead complex investigations, strengthen security controls and partner with cross-functional teams to defend against evolving threats.

You'll contribute to security across cloud, identity, endpoint, network and data security, while mentoring others and driving continuous improvement.

Qualifications

• Significant experience in cyber security, information security or security operations.
• Experience leading investigations and solving complex technical challenges.
• Ability to influence stakeholders with clear, confident communication.
• Strategic thinking with hands-on mindset.

Responsibilities

• Lead investigations and response to complex cyber security incidents across cloud, endpoint, identity, network, email and apps.
• Improve Security Operations with detections, playbooks, automation and processes.
• Own and enhance security controls like DLP and MFA, ensuring they are effective and measurable.
• Assess vulnerabilities and coordinate remediation with technology teams to reduce risk.
• Provide security assurance for new projects, embedding security by design.
• Produce security metrics and reporting for technical and business stakeholders.
• Coach and mentor colleagues to raise security capabilities across the org.

Skills

Security Operations

SIEM

EDR

Identity and Access Management

Data Loss Prevention

Vulnerability Management

Security architecture

Threat detection

Security automation

Job description

Lumentum is seeking a Senior Information Security Analyst to join our global security team in a role focused on protecting people, data and operations. You will lead complex investigations, strengthen security controls and partner with cross-functional teams to defend against evolving threats.

You'll contribute to security across cloud, identity, endpoint, network and data security, while mentoring others and driving continuous improvement.