IT Security Engineer

We are seeking a Senior Cyber Security Engineer with a strong technical background to primarily support our customer site in Huntingdon, with occasional travel to London and other UK locations as required. Reporting to the Cyber Security Engineering Lead, you will provide senior technical expertise within the Security Engineering team, supporting the delivery of security services, mentoring engineers, and helping maintain a strong cyber security posture across customer environments.

You will be responsible for ensuring security technologies and controls are effectively managed, maintained, and enhanced whilst supporting the secure implementation of new capabilities. The role includes coordinating Security Engineering support activities, overseeing service desk workloads, and providing line management to the Change Security Engineers. You will help ensure the programme maintains an effective and adaptable in-service security capability, aligning technical solutions with evolving customer requirements, legislation, security policies, and accreditation standards. This position will perform the following tasks:

• Work under the direct supervision of the Security Engineering Lead too:

• Implement, maintain, and enhance security tooling and technical controls.

• Provide technical guidance and mentoring to Security Engineers.

• Ensure systems maintain compliance with security baselines, policies, and standards.

• Develop and maintain security baselines, standards, and documentation.

• Coordinate Security Engineering service desk activities, prioritising and overseeing ticket resolution to ensure timely and effective support

• Support Security Monitoring requirements, including logging and SIEM integration.

• Work with customers and stakeholders to develop security policies, processes, and technical solutions.

• Assess vulnerabilities, support risk mitigation, and validate remediation activities.

• Deliver security assessments and provide security engineering support to projects and changes.

• Act as Line Manager for the Change Security Engineers, providing tasking, performance management, development, and pastoral support.

• Support the Security Engineering Lead with planning, prioritization, and delivery of security engineering activities.

Candidate Essentials

• British - Non-dual national - many of our projects have nationality restrictions - DV cleared or eligible to go through MOD DV process

Location - Huntingdon, Cambridgeshire (minimum 4 days per week onsite attendance expected; any alternative working arrangements to be agreed with the Cyber Security Engineering Lead). - Occasional travel to London and other UK customer sites may be required.

• Experience implementing defence-in-depth and layered security architectures within complex environments.
• Experience designing, implementing, and governing preventative and detective security controls to manage and reduce risk.
• Strong understanding of systems engineering lifecycle processes, including requirements, change, configuration, and risk management.
• Experience working across multiple delivery methodologies, including Waterfall, SAFe Agile, and DevSecOps.
• Experience conducting design trade-off activities with architects, engineers, and stakeholders to deliver secure, integrated solutions.
• Understanding of service operations, security operations, and the management of security engineering service delivery.
• Experience coordinating and prioritising security engineering support activities, including service desk ticket management and technical task allocation.
• Experience providing technical mentoring and guidance to engineering teams.
• Experience of line management, performance development, and workload management within technical teams.
• Experience working within both delivery and bid/proposal environments.
• Experience supporting Defence Digital programmes and applying MOD security policies, standards, and approaches.

Technology skills/Experience

• Excellent understanding of Confidentiality, Integrity and Availability (CIA) and practical experience in applying that.
• Endpoint Protection products

• Malware
• App Control
• DLP

• Experience in implementing security requirements for a system:

• Microsoft OS
• Linux OS
• Virtualisation technologies
• Networking
• Endpoint Security Products

• Working knowledge of the accreditation process for secure/sensitive systems
• Experience in producing/updating Design artefacts
• Understanding of the implementation, operation and maintenance of SIEM products
• Understanding of network and boundary protection technologies (firewalls, mail gateways, load balancers, anti-virus)
• Understanding of authentication and authorisation technologies (SAML, LDAP, PKI, etc)
• Understanding of security infrastructure in Public and Private cloud, e.g. virtual network infrastructure, hybrid IaaS/PaaS/SaaS solutions
• Understanding of DevSecOps principles and their application to secure system design, development, testing, and deployment

Communication and Soft Skills

• Excellent verbal and written communication skills, with the ability to communicate complex technical concepts effectively to a wide range of audiences
• Capable of developing and communicating a vision to meet the System Requirements
• A good level of commercial awareness that will support the bid and delivery environments
• Ability to effectively manage and prioritise multiple concurrent tasks, projects, and operational activities within a dynamic delivery environment.

Desirable Experience

• Experience working in both delivery and proposal environments
• Experience working in MOD or Home Office project environments
• Working within an AGILE environment

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) Flexi-TIme

Commitment to Diversity, Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.

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., 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. 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. £61,500.00-£78,800.00, Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.