Salary: £? - ? per year Requirements: SC clearance, with willingness to undertake DV clearance Proven experience in security architecture within government-cleared environments Practical hands-on experience in security architecture, design, and assessments within programmes, projects, or a product-centric organisation Good understanding of a broad range of industry-standard technologies, both proprietary and open source, across Microsoft and Linux-based deployments, including physical, virtual, and containerised compute Experience securing mobile devices and services, including device management (MDM), associated policies, and identity solutions Experience working in an architecture function and developing the vision, principles, and strategy for security architects across products, projects, and technologies Experience working to, and assisting in the creation of, security standards, blueprints, reference architectures, roadmaps, transition states, and target solutions across multiple services Direct experience interacting with and influencing senior stakeholders and a wide range of people across large teams, departments, suppliers, and customers Experience as a process owner and team player Strong communication skills across all levels Experience designing solutions using leading-edge security NDR, IDS, and IPS tools such as Corelight, Corvil, FireEye, and Cisco Secure Network Analytics Experience designing and assessing security architectures across modern deployment technologies, including Kubernetes, Docker Swarm/Enterprise, VMware, Jenkins, and Azure DevOps Strong networking experience, including mobile networks such as 4G Experience with non-Microsoft operating systems, including iOS for mobile Experience providing security design and architecture expertise across the development lifecycle using both waterfall and agile methods Experience adopting security standards and frameworks such as NIST Cybersecurity Framework, CIS Controls, and MITRE ATT&CK within the public or private sector Experience creating and managing user and system usage policy documentation for government systems Responsibilities: Deliver technical security design and/or provide assurance of technical security design, and justify and communicate design decisions Work closely with the security function to design architectures utilising leading-edge technologies Help deliver key enhancements and new services operating in the Tier 2/3 security space Assist in setting the strategic direction for security architecture, including developing and implementing frameworks to maintain an acceptable level of technical risk Recommend security controls and identify solutions that support business objectives Identify subtle security needs and understand the risk impact of vulnerabilities on existing and future designs and systems Advise on security-related technologies and assess the risk associated with proposed changes Provide specialist advice and recommend approaches across teams and stakeholders Manage stakeholder expectations and adapt to stakeholder reactions to reach consensus Drive and/or create artefacts to help the client organisation deliver rapid change Advise and enable technical teams to make security decisions and provide guidance on the effective use of common tools and patterns Proactively deliver secure systems and implement proportionate controls to enable successful business outcomes Technologies: Azure Cisco DevOps Docker Support Jenkins Kubernetes Linux Mobile Network Security VMware iOS Cloud Architect CI/CD More: We are a specialist services company supporting a key government asset in London. This is an outside IR35 contract with on-site work required four days a week. We offer the opportunity to play a critical part in protecting some of the UKs most sensitive information in an exciting, complex environment where you can make a real difference by bringing experience and delivery to the team. last updated 24 week of 2026