Senior Cyber Security Engineer in Farnborough

Location: Farnborough, UK

Security Clearance Level: DV

Everything we do is built on a commitment to do the right thing for our customers, our people and our community. Our mission and our values guide the way we do business. The foundation of our Leidos culture is our Values, Beliefs and Expectations by which we select, recognise and reward employees. They create the environment that drives us toward our mission. Inspired to make a difference, we are committed to solving the world’s toughest problems. Passionate about customer success, we work closely with our stakeholders to understand, shape, and deliver secure solutions that enable critical outcomes. United as a team, we are bound together by our conviction that ethics and integrity are core to how we operate.

In this role, you will be a trusted security practitioner, working with minimal direction on a critical programme and helping to raise the security bar across engineering and operations. Because of a key strategic development and a new exciting business opportunity, we have a requirement for a security‑cleared Senior Cyber Security Engineer (T4) based in the UK working at our Farnborough site and remotely. Leidos has more than 30 years’ experience of developing and running some of the largest government systems in the world. We are currently hiring to expand our UK based technical team who support our delivery for the UK Govt. Come join our team and further develop your skills as we deliver and support systems key to the defence of the UK and partner nations.

Being part of the Leidos team is a commitment to push yourself and those around you to do better, constantly adapt and learn new technologies. We’re a passionate team and are committed to developing and growing our staff. Leidos is a global science and technology solutions leader working to solve the world's toughest challenges in the defence, intelligence, homeland security, civil, and health markets. The company's 33,000 employees support vital missions for government and commercial customers.

What Will You Be Doing?

To support current program delivery, we currently have a permanent vacancy for a Senior Cyber Security Engineer to support the development and transition into live of a MOD application and infrastructure solution providing support to a critical operational end user. Leidos is seeking an enthusiastic protective security specialist to lead the implementation and assurance of security within a key defence project. You will contribute across the delivery lifecycle—shaping secure designs, defining and assuring controls, and providing senior-level security engineering support across protective and information security. You will have demonstrable experience applying recognised security frameworks (e.g., Government Functional Standard 007, NIST, CIS benchmarks) to real-world systems and service. You will be joining a team of highly skilled and highly motivated individuals who are working on one of the UKs leading programmes.

Required Skills

The Senior Cyber Security Engineer (T4) plays a critical role in protecting and enabling mission IT by combining deep technical expertise with pragmatic risk management. You will be able to work with minimal direction on a specific programme, taking responsibility for planning, implementing, and assuring security controls across infrastructure, platforms, and applications (including cloud services). You will provide clear security advice and assurance to stakeholders, typically aligned to HMG/MOD expectations and recognised standards (e.g., NIST, CIS benchmarks), and you will support teams by sharing knowledge and guiding good practice.

Key Functions/Outputs

• Vulnerability Management, Reporting & Risk Prioritisation
• Endpoint, Identity & Cloud Security Engineering (AWS)
• Incident Response Leadership & Operational Security
• Secure Configuration, Hardening & Compliance Assurance
• Security Design Review, Change Impact Assessment & ST&V
• Stakeholder Engagement, Governance & Decision Support
• Documentation, Mentoring & Continuous Improvement

Main Objectives

• Perform regular vulnerability assessments and generate actionable reporting using approved toolsets (or equivalent).
• Drive endpoint security posture through regular updates, policy tuning, and validation activities aligned to current threats and programme requirements.
• Help to recognise and confirm potential incidents through alerts, logs, and user reports; apply sound judgement to distinguish true threats from false positives.
• Ensure security toolsets are kept up to date with patches and software updates; assess impact and coordinate change implementation in line with governance.
• Lead or support evaluation and impact assessment of proposed changes to security posture; provide clear recommendations, conditions, and required evidence for approval.

Essential Experience

• Proven experience in a senior cyber security engineering role, delivering security outcomes across complex IT environments (on‑prem and/or cloud).
• Practical experience implementing security as code and policy as code in AWS environments.
• Strong knowledge of secure configuration and hardening practices.
• Hands‑on experience with vulnerability management and risk‑based prioritisation.
• Experience supporting or leading incident response activities.
• AWS security‑related certifications (e.g., AWS Certified Security – Specialty) or equivalent cloud security experience.

Desirable Certifications: CISSP, CISM, or equivalent senior‑level security certification.

What we do for you

At Leidos we are PASSIONATE about customer success, UNITED as a team and INSPIRED to make a difference. We offer meaningful and engaging careers, a collaborative culture, and support for your career goals, all while nurturing a healthy work‑life balance. We provide an employment package that attracts, develops and retains only the best in talent.

Commitment and Diversity

We welcome applications from every part of the community and are committed to a truly diverse and inclusive culture.

Who We Are

Leidos UK & EUROPE – we work to make the world safer, healthier, and more efficient through technology, engineering and science.

Pay Range £61,500.00-£78,800.00