Contract Information Security Manager vacancy in Salisbury (4 days per week on site) (337lw)

Ex-Mill Recruitment Ltd; Salisbury; On-site; GBP 75,000 - 110,000; Part time

Job summary

Ex-Mil Recruitment Limited is seeking an experienced Information Security Manager for a 12-month contract in Salisbury, with 4 days per week on site. The role focuses on cyber security, information assurance, and risk management within a Defence/National Security context.

You will work closely with senior cyber security leadership to influence strategy, oversee testing, and drive improvements across a complex, high-security environment.

Qualifications

• Experience in high-security environments, preferably defence or national security.
• Strong understanding of cyber security principles and risk management.
• Ability to communicate complex security issues to technical and non-technical audiences.

Responsibilities

• Lead technical security activity, coordinating testing and remediation with IT suppliers and internal teams.
• Strengthen cyber resilience through identification of vulnerabilities and Cyber Improvement Plans.
• Shape security policy by contributing to development and improvement of standards and processes.
• Provide trusted cyber security guidance and best-practice recommendations.
• Advise on Cyber Risk Assessments and translate technical risks into clear business decisions.
• Support operational teams to implement strategic security direction into deliverable outcomes.
• Engage stakeholders to improve security maturity and resilience.

Skills

Cyber security

Information assurance

Risk management

Network security

Security governance

Defence industry experience

Job description

Contract Information Security Manager vacancy in Salisbury (4 days per week on site) (337lw)

Information Security Manager | Defence & National Security | 12-Month Contract

Location: Salisbury (Porton Down) – 4 days per week on site

Contract: 12 months

Start date: January 2027

Rate: Can be discussed at time of application due to client confidentiality

Put your operational experience to work protecting the UK's defence and national security interests.

Are you an ex-Military professional with a background in Cyber Security, Information Assurance or Defence IT? Have you developed your expertise in complex, high-security environments and want to continue making a meaningful contribution to the UK's national security?

This is an opportunity to bring your operational knowledge, security expertise and risk management experience into a challenging defence-focused environment, supporting the development and protection of critical digital infrastructure.

We are seeking an experienced Information Security Advisor to work closely with senior Cyber Security leadership, providing trusted advice, technical oversight and practical security guidance across a complex defence organisation.

This is much more than a policy-focused security role. You will have the opportunity to influence cyber security strategy, lead technical security testing and drive meaningful improvements to the organisation's security posture.

The Mission

Working alongside the senior Information Security leadership team, you will play a key role in translating strategic cyber security objectives into practical, risk-balanced solutions.

Your responsibilities will include:

• Lead technical security activity: Oversee network and application security testing, coordinating findings and driving remediation with IT suppliers and internal assurance teams.
• Strengthen cyber resilience: Identify vulnerabilities, assess exposure and support the delivery of effective Cyber Improvement Plans.
• Shape security policy: Contribute to the development, review and improvement of security policies, standards and operational processes.
• Provide trusted advice: Offer practical cyber security guidance and best-practice recommendations to security teams and wider stakeholders.
• Drive risk-based decisions: Advise on Cyber Risk Assessments, helping translate complex technical risks into clear, proportionate business decisions.
• Support operational teams: Work with security practitioners to turn strategic security direction into pragmatic, deliverable outcomes.
• Influence stakeholders: Engage with technical teams, suppliers and senior security colleagues to improve security maturity and resilience.

What We’re Looking For

We are particularly interested in professionals who combine strong technical cyber security expertise with experience gained in military, defence or other highly secure environments.

You will ideally bring

• Strong knowledge of multi-site IP-based networks, including their operation, protection and monitoring.
• Experience securing public cloud infrastructure and/or Operational Technology (OT).
• Practical experience conducting or advising on Cyber Risk Assessments and Cyber Improvement Plans.
• A sound understanding of cyber security principles, information assurance and risk management.
• Experience working within secure, defence or similarly complex environments.
• The confidence to communicate complex security issues clearly to both technical and non-technical audiences.
• The ability to make balanced, evidence-based decisions that consider operational requirements and business risk.

Why This Opportunity?

For someone who has served in the Armed Forces or worked within the defence community, this is an opportunity to continue contributing to the mission in a different capacity.

You’ll be applying your understanding of operational environments, security discipline and risk management to help protect critical defence capabilities.

If you have transitioned from military service into cyber security, information assurance or defence technology, this could be an excellent opportunity to put that experience to work.