Senior Security Analyst

Computer Network Defence Ltd (CND); Corsham; On-site; GBP 60,000 - 90,000; Full time

Benefits offered by this job

Relocation package

Job summary

Computer Network Defence Ltd (CND) is seeking a Senior Cyber Security Analyst to join our MSSP Security Operations Centre in Corsham. You will lead incident analysis, monitor alerts, and mentor junior analysts while engaging clients on findings.

The role covers SIEM monitoring, threat intelligence, vulnerability context, and reporting, with a client-facing focus and opportunities to shape SOC processes and growth.

Qualifications

• Experience in a SOC or cyber security operations environment.
• Ability to investigate and analyse complex security incidents.
• Strong knowledge of SIEM platforms and threat intel tooling.
• Excellent stakeholder and client communication skills.
• Ability to mentor and develop junior analysts.
• Proactive approach to problem-solving and continuous improvement.

Responsibilities

• Monitor, triage and investigate security alerts across multiple platforms.
• Conduct in-depth incident analysis and support client investigations.
• Act as deputy to the SOC Team Lead when required.
• Review and assess escalated Tier 2 alerts for urgency and impact.
• Deliver weekly and monthly reporting to clients and stakeholders.
• Lead false-positive reduction and SIEM tuning activities.
• Mentor and support development of Tier 1 and junior analysts.
• Contribute to SOC process improvement and operational efficiency.
• Participate in incident response activities as part of the wider team.

Skills

SOC experience

Incident analysis

SIEM proficiency

Client communication

Mentoring juniors

Threat awareness

Problem solving

Job description

We’re Hiring: Senior Cyber Security Analyst | Corsham

I’m currently looking for a Senior Cyber Security Analyst to join our SOC team at Computer Network Defence Ltd (CND).

This is a key hire within our MSSP Security Operations Centre, offering the opportunity to take a lead role in incident analysis, client engagement, and mentoring junior analysts, while shaping how the SOC continues to evolve.

The Role

As a Senior Cyber Security Analyst, you will support the SOC Team Lead and play a central role in monitoring, triaging, and investigating security events across a range of client environments.

You’ll be working across SIEM platforms, vulnerability management tools, threat intelligence sources, and network telemetry to deliver effective detection and response.

You will also take on client-facing responsibilities, presenting findings, trends, and insights, as well as contributing to reporting and continuous improvement within the SOC.

Key Responsibilities

• Monitor, triage and investigate security alerts across multiple platforms
• Conduct in-depth incident analysis and support ongoing client investigations
• Act as deputy to the SOC Team Lead when required
• Review and assess escalated Tier 2 alerts for urgency and impact
• Deliver weekly and monthly reporting to clients and stakeholders
• Communicate security findings and trends directly to clients
• Support vulnerability management analysis and remediation efforts
• Lead false-positive reduction and SIEM tuning activities
• Mentor and support development of Tier 1 and junior analysts
• Contribute to SOC process improvement and operational efficiency
• Participate in incident response activities as part of the wider team
• Lead internal SOC initiatives and projects where required
• Create and deliver presentations for clients and internal teams

What We’re Looking For

• Strong experience within a SOC or cyber security operations environment
• Proven ability to investigate and analyse complex security incidents
• Experience with SIEM platforms, threat intelligence, and security tooling
• Strong stakeholder and client communication skills
• Ability to mentor and develop junior team members
• Proactive approach to problem-solving and continuous improvement
• Good understanding of current cyber threats, tactics and trends
• Location: Isle of Man (relocation package)/Corsham
• Hours: 37.5 hours per week, plus on-call rota
• Working pattern: Monday to Friday, 09:00-17:00 (early Friday finish at 16:00, workload permitting)
• Clearance: SC Cleared

This is a great opportunity for someone looking to step into a more senior, visible role within a growing SOC, with real influence over both technical delivery and team development.