Security Architect

About Atos Group

Atos Group is a global leader in digital transformation with c. 56000 employees and annual revenue of c. 7.2 billion (at the go-forward perimeter) operating in 54 countries under two brands - Atos for services and Eviden for products and systems. European number one in cybersecurity and a leader in cloud Atos Group is committed to a secure and decarbonized future and provides tailored AI-powered end-to-end solutions for all industries.

Atos Group is listed on Euronext Paris.

About Role:

Contribution / Impact:



This role offers the opportunity to contribute security outcomes of one of the UKs 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.

Bigger Challenge / Scope / Responsibilities:

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.

Interesting Brand or Reputation:

Join Atos and help secure some of the UKs 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.

Influence:

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.

Hybrid:

Initially the role will require a presence at the clients 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.

Role Purpose:

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

Working closely withtechnicalarchitects solution architects project teams operational teams and customer stakeholders the Security Architect provides expert guidance and governance throughout the solution lifecycle.



Key Responsibilities :

Security Architecture & Design

• Develop andmaintainsecurity architectures patternsstandardsand 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.

Risk Assessment & Threat Modelling

• Conduct threat modelling exercises using recognised methodologies (e.g. STRIDE MITRE ATT&CK).

• Perform security risk assessments for new and existing services.

• Identifyvulnerabilitiesthreatsand control gaps recommending appropriate mitigation activities.

• Support risk management processes and risk-based decision making.

Governance & Assurance

• Act as a security authority within architecture review boards and governance forums.

• Define andmaintainsecurity standardscontrolsand architecture principles.

• Review and approve architecture exceptions where appropriate.

• Ensure compliance with relevant regulations contractualobligationsand industry frameworks.

Security Strategy & Roadmaps

• Support the development and maintenance of security strategy and roadmaps.

• Identify opportunities to improve security capabilityresilienceand operational effectiveness.

• Contribute to long-term security transformation initiatives.

Stakeholder Engagement

• Collaborate with business leaders delivery teams operational teamssuppliersand customers.

• Translate complex technical security concepts into business-focused recommendations.

• Act as a trusted advisor on security architecture and cyber risk matters.

Incident & Operational Support

• 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.

Mentoring & Leadership

• Leadand mentor architectsengineersand technical specialists.

• Promote security awareness and best practice across teams.

• Contribute to the development of the organisations security architecture capability.

Knowledge & Experience

Essential

• Significant experience in Information Security Cyber Security Architecture or Solution Architecture.

• Experience designing secure enterprisecloudand hybrid environments.

• Understanding of:

• Identity & Access Management (IAM)

• Network Security

• Cloud Security (Azure and/or AWS and/or GCP)

• Security Monitoring and Incident Response

• Data Protection and Encryption

• Zero Trust principles

• Experience performing threat modelling and…