Cyber Security Consultant - Security Cleared

iO Associates; England; Remote; GBP 70,000 - 85,000; Full time

Job summary

A leading consultancy in the UK is seeking an experienced Cyber Security Consultant to lead projects in the nuclear sector, with the opportunity to influence cyber strategy across critical infrastructure. This role offers high autonomy, client engagement, and flexibility in working arrangements. Candidates should have over 5 years of experience in cyber security and relevant certifications. Travel to client sites may be required.

Benefits

Flexible working

Career growth opportunities

Exposure to mission-critical industries

Qualifications

• Over 5 years' experience in cyber security.
• Recognised certification required.
• Strong consultancy background in client-facing roles.

Responsibilities

• Lead cyber risk investigations across various sectors.
• Deliver solutions in client environments with minimal supervision.
• Influence technical direction in consultancy engagements.

Skills

Cyber security expertise

Client engagement

Risk assessment

Education

CISM, CISSP, or MCIISec certification

Job description

Cyber Security Consultant
£70,000 - £85,000
Remote with travel to client sites | Permanent
SC Cleared (DV desirable)

Our client, a leading consultancy in the defence and nuclear sectors, is seeking an experienced Cyber Security Consultant to join their growing practice. You'll play a key role in delivering risk investigation and cyber security projects, initially focused on the nuclear industry with opportunities to expand into defence, security, and wider consultancy work. This role offers the chance to operate with high levels of autonomy, influence senior stakeholders, and shape cyber strategy across critical national infrastructure.

Key Responsibilities

• Lead cyber risk investigations and provide expert consultancy across nuclear, defence, and security projects.
• Work independently and confidently in client environments, delivering solutions with minimal supervision.
• Apply industry standards and frameworks such as BS EN IEC 62443 and ISACA methodologies.
• Engage with stakeholders across Defence and Government organisations.
• Support the delivery of secure, compliant, and resilient systems across highly regulated industries.
• Bring consultancy best practices, influencing technical direction and business outcomes.
• Contribute to knowledge-sharing and mentoring across internal and client teams.

Requirements

• Over 5 years' experience in cyber security, backed by a recognised certification (CISM, CISSP, MCIISec).
• Current SC clearance (minimum); DV clearance highly desirable.
• Strong consultancy background with experience in client-facing roles.
• Knowledge of risk frameworks and cyber security in nuclear, defence, and government contexts.
• Confident operating unsupported and delivering to tight deadlines.
• Willingness to travel to client sites as required (expenses covered).

Desired Skills

• Experience within the nuclear industry.
• Knowledge of BS EN IEC 62443 standards.
• Familiarity with CyBOK skillsets and chartered/ISACA qualifications.
• Background in Defence & Security or ex-military environments.

This is an excellent opportunity for a Cyber Security Consultant seeking to work on high-impact projects in the nuclear and defence sectors, with the chance to broaden into wider consultancy engagements. With flexible working, career growth opportunities, and exposure to mission-critical industries, this role will suit someone confident operating at the highest professional level.