Senior Cyber Security Engineer / Architect

  • Leidos
  • Ham, Somerset
  • 26/07/2026
Full time Information Technology Telecommunications

Job Description

Description

Senior Cyber Security Engineer / Architect

Location: Farnborough, UK

Security Clearance Level - High - DV Developed Vetting

UNLEASH YOUR POTENTIAL

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

Passionate about customer success by being determined to understand and respond to our customers' needs as if they were our own.

United as a team, we are bound together by our conviction that ethics and integrity is core to how we operate. Because of a key strategic development and a new exciting business opportunity, we have a requirement for a security-cleared Cyber Security Architect 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.

As a result of some exciting programme wins, we currently have a permanent vacancy for a Cyber Security Architect to support the development and transition into live of a new IT 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.

The incumbent will possess specialist skills in all areas of protective and information security and have demonstrable experience of applying security frameworks such as Government Functional Standard 007.

They will be joining a team of highly skilled and highly motivated individuals who are working on one of the UKs leading programmes.

Required Skills:

As a Cyber Security Architect, you will be able to work with minimal direction on a specific MOD programme. You will ensure that the solution security design meets the customer functional and non-functional security requirements and provides the necessary assurance to our client, highly likely to be backed up by rigorous assurance and certification processes, normally HMG standards (including MOD-specific JSP), NCSC and NIST 800 standards.

You will have responsibility for interfacing to security design partners across the programme, both customer and supplier representatives, and colleagues within our engineering, service, and business development teams. You will ensure that Leidos can establish and maintain an effective and efficient security architecture for the programme, and that the designs will be able to adapt as customer requirements, legislation and assurance standards change over the programme lifespan.

Within the programme, the role will primarily be responsible to a solution architect and Chief Engineer for developing and delivering the relevant elements of the solution, whilst understanding the whole. You will be required to work in both delivery and change proposal environments.

You will have a complete understanding of cyber risk and treatment approaches. Based on a strong ability to communicate risk and its proportionate management, you will know how this issue is addressed both in traditional 'on-premise' highly sensitive platforms, and in public cloud technologies. You will be experienced and accomplished in meeting the challenges associated with assuring systems in public and private cloud environments.

You will be required to develop high- and low-level security architecture designs for systems intended for secure/sensitive environments, with appropriate security based on detailed risk analysis. SABSA qualifications and experience would be desirable. You will be required to hold security clearance under National Security Vetting processes.

You may need to work on customer locations or one of our secure development locations, or a mix of both, as well as an element of working from home.

Your Process Skills/Experience

  • Proven experience of applying Defence-in-Depth principles and a layered security approach to the design and implementation of secure systems.

  • Experience in selecting and implementing proportionate preventive, detective and corrective security controls to manage and reduce risk to acceptable levels.

  • Strong understanding of systems engineering governance processes and practical experience across key stages of the Systems Engineering Lifecycle, including requirements management, configuration management, verification and validation.

  • Experience working within a variety of delivery methodologies, including Waterfall, Incremental Delivery, SAFe Agile and DevSecOps environments.

  • Experience supporting and contributing to key engineering and assurance reviews, including System Requirements Reviews (SRR), Preliminary Design Reviews (PDR), Critical Design Reviews (CDR) and security assurance activities.

  • Proven ability to conduct security and architectural trade off analyses, collaborating with architects, engineers and stakeholders to develop integrated, coherent and secure solutions.

  • Understanding of service management principles and experience contributing to security operations, service transition and operational security management planning.

  • Experience operating within both programme delivery and business development/bid environments, including supporting solution development, risk assessments and technical proposals.

  • Experience working with Defence Digital, Defence standards, and MOD security policies, architectures and assurance approaches.

  • Experience engaging with customers, suppliers and accrediting authorities to support security assurance, risk management and system accreditation activities.

  • Understanding of security governance, risk management and compliance activities within highly regulated government and defence environments.

Technology skills/Experience

  • Extensive experience designing, implementing and assuring secure solutions within Amazon Web Services (AWS) environments, including the use of AWS native security services, cloud security best practices, and secure by design principles. (Essential)

  • Extensive experience designing and assuring secure virtualised