Security Architect

About Atos Group

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This role offers the opportunity to contribute security outcomes of one of the UK’s largest and most high-profile infrastructure programmes. The successful candidate will play a critical role in ensuring secure-by-design delivery across a programme of works with significant national importance.

This is an opportunity to step into a role with greater scope, responsibility, and impact. You will lead security across complex, multi-stakeholder programmes, addressing architectural and operational challenges that directly influence business and security outcomes.

Join Atos and help secure some of the UK's most critical infrastructure. The scale, complexity, and visibility of these programmes will enhance your professional reputation, strengthen your personal brand, and position you as a trusted security leader.

This role provides a unique opportunity to shape and strengthen the cyber security posture of a Critical National Infrastructure organisation, influencing strategic decisions, driving behavioural change, and delivering security outcomes across the enterprise.

Initially, the role will require a presence at the client’s Birmingham city centre offices for three days per week. As familiarity with the environment increases and key deliverables are achieved, the on-site requirement is expected to reduce accordingly.

The Security Architect is responsible for ensuring that security is embedded into business and technology solutions by design. The role provides security leadership across projects,programmesand operational services, ensuring that security architectures, risks and controls align with business objectives, regulatoryrequirementsand industry best practice.

• Develop and maintain security architectures, patterns, standard sand reference designs.
• Review and assure solution designs to ensure compliance with security policies and security-by-design principles.
• Produce and review High-Level Designs (HLDs).
• Ensure solutions align with enterprise architecture, riskappetiteand security strategy.
• Conduct threat modelling exercises using recognised methodologies (e.g. STRIDE, MITRE ATT&CK).
• Perform security risk assessments for new and existing services.
• Identify vulnerabilities,threatsand control gaps, recommendingappropriate mitigationactivities.
• Support risk management processes and risk-based decision making.

• Act as a security authority within architecture review boards and governance forums.
• Define and maintain security standards,controlsand architecture principles.
• Review and approve architecture exceptions where appropriate.
• Ensure compliance with relevant regulations, contractual obligationsand industry frameworks.

• Support the development and maintenance of security strategy and roadmaps.
• Identify opportunities to improve security capability, resilience and operational effectiveness.
• Contribute to long-term security transformation initiatives.

• Collaborate with business leaders, delivery teams, operational teams,suppliers and customers.
• Translate complex technical security concepts into business-focused recommendations.
• Act as a trusted advisor on security architecture and cyber risk matters.

• Provide architectural support during security incidents and major service disruptions.
• Support root cause analysis and remediation activities.
• Assist with security tooling evaluations and strategic technology decisions.
• Leadand mentor architects,engineers and technical specialists.
• Promote security awareness and best practice across teams.
• Contribute to the development of the organisation's security architecture capability.

• Significant experience in Information Security, Cyber Security Architecture or Solution Architecture.
• Experience designing secure enterprise,cloudand hybrid environments.
• Experience…