Operational Cyber Security Lead

At Amentum were not just solving problems; were engineering the future. Our team is driven by an unyielding commitment to innovation integrity and collaboration tackling some of the most significant challenges in science security and sustainability. If youre passionate about making a real impact and want to be part of a community that values ethical excellence this is the place where your ambition can thrive.

Here we believe that success comes from continuously pushing boundaries and working together to deliver on our promises. We embrace challenges with confidence and are dedicated to creating a secure and vibrant future for inspire and empower you to deliver your best work so you can evolve grow and succeed today and into tomorrow. We offer an exciting range of opportunities to develop your career within a supportive and diverse team who always strive to do the right thing for our people clients and communities.

People are our greatest asset and we offer a competitive package to retain and attract the best addition to the benefits youd expect UK employees also receive free single medical cover and digital GP service family-friendly benefits such as enhanced parental leave pay and free membership of employee assistance and parental programmes plus reimbursement towards relevant professional development and -life balance and flexibility is a key focus area for us. Were happy to discuss hybrid part-time and flexible working hours patterns and locations to suit you and our business.

About the Opportunity

The Operational Cyber Security Lead is responsible for ensuring the implementation maintenance and continuous improvement of cybersecurity practices across global operations. This role provides operational leadership to safeguard systems data and infrastructure supporting large-scale multi-national projects. The individual will collaborate with cross-functional global delivery teams to embed robust security controls and align with organizational risk management frameworks.

Responsibilities:

• Lead day-to-day cybersecurity operations across multiple regions and time zones.

• Oversee the security posture of global delivery projects ensuring compliance with corporate and regulatory requirements.

• Ensure alignment with ISO 27001 Cyber Essentials Plus Aus Essential 8 GDPR and other relevant frameworks.

• Conduct regular audits risk assessments and security reviews of delivery environments.

• Partner with compliance and legal teams to address security-related contractual obligations.

• Serve as a trusted advisor for security across international teams vendors and partners.

• Support the rollout of global cybersecurity transformation programs.

• Foster a culture of cyber awareness through training and engagement with technical and non-technical staff.

• Oversee vulnerability assessments threat intelligence integration and proactive risk mitigation strategies.

Heres What Youll Need

• Strategic Thinking - able to translate and balance technical requirements into business outcomes ensuring alignment with security initiatives for global programmes.

• Proactive Governance Mindset - experienced in managing frameworks (Cyber Essentials Plus ISO27001 etc) and embedding controls into operations.

• Risk Communication: Proven ability to translate complex cybersecurity risks and technical issues into clear actionable insights for non-technical audiences including executive and senior leadership teams.

• Technical Expertise: Hands-on experience with key security domains including vulnerability management and patch governance endpoint protection (EDR/XDR) identity and access management (Active Directory) and securing both on-premise and cloud environments (Microsoft 365 and Azure Security).

• Analytical Capability: Skilled in interpreting security data such as vulnerability scans posture metrics (e.g. Microsoft Secure Score) and incident trends to drive measurable improvements in security posture.

• Global Leadership: Demonstrated success in leading and influencing stakeholders across global delivery teams ensuring alignment and accountability for cybersecurity objectives in complex multi-region environments.

• Cross-Functional Collaboration: Adept at partnering with Service Delivery Project and Vendor teams to embed consistent scalable security practices across operations.

• Continuous Learning & Innovation: Actively stays ahead of emerging threats frameworks and technologies fostering a culture of continuous improvement and knowledge sharing across teams.

Our Culture

Our values stand on a foundation of safety integrity inclusion and diversity. We put people at the heart of our business and we genuinely believe that we all succeed by supporting one another through our culture of caring. We value positive mental health and a sense of belonging for all employees.

We aim to embed inclusion in everything we do. We know that if we are inclusive were more connected and were more creative. We accept people for who they are regardless of age disability gender identity gender expression marital status mental health race faith or belief sexual orientation socioeconomic background and whether youre pregnant or on family leave. This is reflected in our wide range of Global Employee Networks.

We partner with VERCIDA to help us attract and retain diverse talent. For greater online accessibility please visit to view and access our roles. As a Disability Confident employer we will interview all disabled applicants who meet the minimum criteria for a vacancy. We welcome applications from candidates who are seeking flexible working and from those who may not meet all the listed requirements for a role.

If you require further support or reasonable adjustments with regards to the recruitment process (for example you require the application form in a different format) please contact

Amentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race sex sexual orientation pregnancy (including pregnancy childbirth breastfeeding or medical conditions related to pregnancy childbirth or breastfeeding) age ancestry United States military or veteran status color religion creed marital or domestic partner status medical condition genetic information national origin citizenship status low-income status or mental or physical disability so long as the essential functions of the job can be performed with or without reasonable accommodation or any other protected category under federal state or local law. Learn more about your rights under Federal laws and supplemental language atLabor Laws Posters.