Senior Cyber Security Engineer or Architect in Farnborough

Location: Farnborough

Security Clearance Level: High: DV - Developed Vetting

Role Overview

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 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 services. 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

• 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

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, leveraging tools such as AWS CloudFormation, Terraform, and AWS Organisations service control policies.
• Strong knowledge of secure configuration and hardening practices, and ability to apply benchmarks/standards (e.g., CIS, NIST, STIG) pragmatically.
• Hands‑on experience with vulnerability management and risk‑based prioritisation, including working with engineering teams to drive remediation.
• Experience supporting or leading incident response activities, including investigation, containment, and lessons learned.
• Ability to communicate technical security issues clearly to non‑specialists and support governance/assurance decision‑making.
• Experience producing high‑quality security documentation and evidence suitable for audit/assurance.
• 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.
• Degree or postgraduate qualification in cyber security, such as a master's or PhD in Information Security, Cyber Security, or a related discipline.

Clearance Requirements

Clearance to Start and for Role SC/DV