Cyber Security Engineer

We Need You...

Join Our Talent Community:

Leidos UK & EUROPE are always on the lookout for talented individuals to join our company and would love to hear from you.

If you cannot see a vacancy on our careers page that matches your current requirements, please register your interest in Leidos UK & EUROPE, by submitting an application via ‘Join Our Talent Community’ on the UK careers page and we will be in touch as soon as a role matching your skill set becomes available.

Due to growth within UK programmes, we will need talented Cyber Security Engineers throughout the course of 2026…

UNLEASH YOUR POTENTIAL

At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers’ success. We empower our teams, contribute to our communities, and operate sustainably. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business.

Location:

Future vacancies could be available in Bristol, Farnborough or Whiteley (Hampshire).

Are your ready for your next challenge?

Cyber Security Engineers are responsible for providing cybersecurity engineering services for classified and unclassified networks of computer systems. The Cyber Security Engineers will provide operational and engineering support.

• Develop creative solutions to complex technical issues and problems
• Work with the engineering teams to ensure systems remain at the required security posture against baseline requirements
• Work with the Security Monitoring engineering team to ensure logs are forward to the SIEM capability
• Work with the customer and appropriate agencies to develop new policies, design processes, and procedures, and develop technical designs
• Assess system vulnerabilities, implement risk mitigation strategies, validate secure systems, and test security products and systems to detect security weakness
• Maintain and support security enforcing functions

• Experience working in MOD or Home Office project environments
• Strong knowledge of network and system security, including firewalls, IDS/IPS, micro-segmentation, and host security.
• Hands on experience with the following security products Trellix, Ivanti, ClearSwift, Yubikey
• Understanding of secure coding practices and common vulnerabilities (OWASP Top 10, SANS Top 25).
• Expertise in identity and access management (IAM), including RBAC, ABAC, JWT and Cookie based authentication.
• Incident detection and response in MOD environments.
• Security compliance and regulatory frameworks (e.g., NIST, CIS Benchmarks).
• Experience working with Kubernetes at an administrative level
• Strong leadership and mentoring abilities.
• Effective communication with development, operations, and security teams.
• Ability to advocate for security best practices in a DevOps culture.

Containerization Security

• Expertise in Kubernetes security (e.g., RBAC, network policies, pod security standards, secrets management).
• Knowledge of container runtime security (e.g., container escapes, rootless containers, sandboxing).
• Image security best practices, including scanning, signing, and provenance verification.
• Secure deployment patterns using Tanzu & Kubernetes.
• Runtime security monitoring.

DevSecOps & CI/CD Security

• Secure CI/CD pipeline design with security testing using like Git and SonarQube.
• Implementation of Infrastructure as Code (IaC) security (e.g., Terraform, Ansible).
• Secrets management in CI/CD pipelines using Vault or Kubernetes Secrets.
• Security automation and policy enforcement using tools like GitHub Actions, GitLab CI and Jenkins.

Cloud & Infrastructure Security

• Strong knowledge of cloud security principles in a containerised environment.
• Kubernetes security posture management (KSPM) using tools like Trivy.
• Secure ingress/egress controls, service mesh security (e.g., Istio).
• Encryption strategies for data at rest, in transit, and in use.
• Network security best practices for Tanzu container networking (e.g., NSX, Rancher)
• Compliance monitoring and security auditing for cloud-native environments.

Automation & Scripting

• Scripting skills in Python, PowerShell for security automation.
• API security knowledge (e.g., OAuth, JWT, API gateways, rate limiting).
• Experience with Security as Code for automated policy enforcement.

Are you ready to make an impact? Begin your journey of a flourishing and meaningful career, share your CV with us today...

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. Our reward scheme includes:

• Contributory Pension Scheme
• Private Medical Insurance
• 33 days Annual Leave (including public and privilege holidays)
• Access to Flexible benefits (including life assurance, health schemes, gym memberships, annual buy and sell holidays and a cycle to work scheme)
• Flexible Working Scheme

Commitment to Diversity:

We welcome applications from every part of the community and are committed to a truly diverse and inclusive culture. We foster a sense of belonging, welcoming all perspectives and contributions, and providing equal access to opportunities and resources for everyone. If you have a disability or need any reasonable adjustments during the application and selection stages please let us know, and we will respond in a way that best fits your needs.

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

Leidos is a growing company delivering innovative technology and solutions focused on safeguarding critical capabilities and transformation in frontline services, our work in the United Kingdom includes addressing some of the most complex problems in defence, healthcare, government, safety and security, and transportation.

What Makes Us Different:

Purpose: you can use your passion and abilities at Leidos to keep the people you care about safe. We are at the forefront of machine learning, AI, cyber security and solutions. Using your skills in the technology frontline by helping to build a safer world. You can inspire change.

Collaboration: having flexibility to do your job is one of our core benefits, enabling you to become part of our extraordinary team. We have been empowering our people to work flexibly for years. Whether you work from home, the office or on customer sites, we will give you the digital tools and the flexibility to work smarter and align your needs and ours.

People: Leidos empowers people from every background to be themselves and gives you the tools to learn new skills by enabling growth whilst developing. We believe that extraordinary people need opportunities to grow, to be inspired and to inspire others. At Leidos, we invest in technical academies, career rotations and a career development plans that enhance your future.

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:

£47,600.00-£61,000.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.