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Actica Consulting Logo Actica Consulting · IT - Administration

Security Architect

United Kingdom, Guildford · Job Posted January 03, 2026
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Job Description

As a Security Architect at Actica, you will have the opportunity to provide support to a wide range of high-profile UK public sector and defence organisations. You will help ensure the security of nationally critical projects that make a real difference to people’s everyday lives. You will provide consultancy to UK public sector and defence organisations to help them protect their systems and data whilst ensuring they meet the needs of their users. You will analyse threats, develop security solutions and ensure that security is embedded in delivery and operation. You will also research and assess new or unfamiliar technologies to identify security benefits and potential weaknesses.

Job Responsibility

  • Direct engagement with clients to understand their cyber security threats, risk appetite and constraints
  • Identifying security risks and appropriate countermeasures
  • Working with solution architects and risk advisors to define and document an appropriate security architecture
  • Selecting appropriate security controls and allocating them to solution components
  • Providing assurance to ensure that solutions address the cyber security threats
  • Supporting production of cyber security policy and processes
  • Supporting client procurements, including developing security requirements and evaluating options

Requirements

  • A track record in security architecture for digital projects or programmes
  • At least one security architecture relevant qualification (e.g. a relevant degree, CISSP etc.)
  • Intellectually agile, proactive and self-motivated with the ability to apply a structured approach to often unfamiliar subject matter
  • Eligibility and willingness to gain UK Security Clearance

Nice to have

  • Experience within the Defence and / or UK Public Sector
  • A broad experience of cyber security including: Threat modelling and risk management
  • Security architecture principles and frameworks (e.g., Zero Trust, SABSA, TOGAF, NIST)
  • Public and private clouds
  • Network security, identity, credential and access management (ICAM), encryption, and endpoint security
  • Application security for Software as a Service (SaaS), COTS applications and bespoke software
  • Software Development Lifecycles including SecDevOps and CI/CD pipelines
  • Operational Technology
  • Operating at multiple classifications (Official, Secret and Top Secret) and the security of cross domain solutions

What we offer

  • 25 days of paid leave per annum plus 8 UK bank holidays
  • Discretionary, Performance-Based Bonus Scheme
  • Enrolment in Stakeholder Pension Scheme
  • Cycle To Work Scheme
  • Employee Assistance Programme
  • Electric Vehicle Leasing Scheme
  • Private Medical Insurance
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