Security Architect - DV Cleared
Role Description & Technical Scope
Security Architect
+ Requires current DV Clearance
+ Initial 9 month contract but expected to last 2 years +
+ Inside IR35 - rates are £650 to £725 per day
+ Hybrid working - expectation is it will be predominantly remote working
The Security Architect will create and design security for the solution, covering the following:
- Working with the Solution Design Authority to provide security input into the development and refinement of OpNET's technological roadmap and High Level Design (HLD) for the solution
- Determining the interoperability, dependencies, and interactions between the infrastructure, platform, and the software environment from a security perspective
- Providing security input into developing, architecting, and documenting Intermediate Level Design (ILD) infrastructure solutions for the Development team to implement, ensuring their coherence across the OpNET solution and compliance with applicable security standards and policies
- Reviewing and approving Low and Detailed Level Design (LLD and DLD) solutions and supporting artefacts to ensure compliance with applicable security standards
- Identifying vulnerabilities, and mitigation strategies for these
- Reviewing any 3rd Party services for security compliance to MOD policy and industry best practices
- Help to define and document security elements of the Architectural runway, setting the direction for Platform and cyber teams. (to include logging, AV, Cyber Defence, FW config etc.) as required
Essential skills
- Detailed understanding of security architecture and experience in applying it to the following:
- Solution design of secure hardware and software solutions, demonstrating successful delivery on complex, large scale programmes utilising emerging technologies where possible.
- Delivering against high pressure timelines and in complex organisations.
- Writing security requirements and producing detailed security designs.
- Conducting rational product selections against complex security requirements,
- Demonstrable experience, expert knowledge, and understanding of applying security architectural expertise within the the following technical environment:
- VMware's Virtualised Desktop Infrastructure (Horizon) product set.
- Virtualisation technologies such as VMware ESXi 6.5, vCentre 6.5, vSAN
- Microsoft Windows Server 2008 R2, 2012 R2, 2016 and 2019 core operating systems.
- Additional Microsoft based technologies such as Exchange, Skype, SQL, and Group Policy.
- Microsoft Windows 10, various Linux implementations from thick client to zero client VDI solutions.
- Several years' experience in providing security architecture expertise to the design and delivery of:
- Public and Private cloud architectures utilising Software Defined Datacentre (SDDC) techniques.
- Government Grade Cryptography Provisioning and Management
- Security implementations such as PKI and proxy services e.g. ADFS in line with MOD Security assurance processes.
- Past experience of working with accredited secure solutions within the UK Public Sector.
- Relevant Security / Cyber accreditations
- Proven track record of working with NCSC design patterns.
Desirable skills, qualifications, and experience
In order to deliver this service, it is desirable that individuals have:
- Experience of:
- Working within the public sector, preferably Defence, and ideally with Defence Digital (formerly ISS).
- The design and configuration of Two Factor Authentication Solutions.
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Key Details
- Date Posted: 21 Oct 2026
- Location: Wiltshire
- Employment: Permanent
- Workplace: Remote
- Clearance: DV Cleared
- Domain: IT, Software & Web Development
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CBSbutler Ltd.
Verified Tech EmployerEnterprise technology firm or security consultancy operating across the UK digital defense ecosystem.
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