Security Architect

Atos SE; United States; Hybrid; USD 113,227 - 146,529; Full time

Benefits offered by this job

Pension (matched 10%)

Private medical cover

Income protection

Life assurance

25 days annual leave + holidays

Flex benefits

Job summary

Atos is seeking a Security Architect to embed security by design across major UK infrastructure programmes. You will lead security architecture, risk assessments and threat modelling across multi-stakeholder projects, ensuring compliance with policies and industry standards.

Based in Birmingham with hybrid working, the role offers opportunities to influence security strategy, mentor engineers, and deliver secure outcomes across the enterprise while collaborating with business leaders and

Qualifications

• Significant experience in Information Security, Cyber Security Architecture or Solution Architecture.
• Experience designing secure enterprise, cloud and hybrid environments.
• Experience performing threat modelling and security risk assessments.
• Excellent stakeholder management and communication skills.
• Experience within regulated industries (Government, Critical National Infrastructure, Financial Services, Healthcare etc.).
• Knowledge of OT/ICS security environments.
• Experience supporting bids, proposals and customer engagements.

Responsibilities

• Develop and maintain security architectures, patterns, standards and reference designs.
• Review and assure solution designs for security policy compliance and security-by-design principles.
• Produce and review High-Level Designs (HLDs).
• Ensure solutions align with enterprise architecture and risk strategy.
• Conduct threat modelling using STRIDE/MITRE ATT&CK.
• Perform security risk assessments for new and existing services.
• Identify vulnerabilities and plan mitigations.
• Support risk management processes and risk-based decision making.
• Act as security authority within architecture review boards and governance forums.
• Define and maintain security standards, controls and architecture principles.
• Review and approve architecture exceptions.
• Ensure compliance with regulations and industry frameworks.
• Support development of security strategy and roadmaps.
• Identify opportunities to improve security capability and resilience.
• Contribute to long-term security transformation initiatives.
• Collaborate with business leaders, delivery teams and suppliers.
• Translate security concepts into business-focused recommendations.
• Act as trusted advisor on security architecture and cyber risk.
• Provide architectural support during security incidents and major service disruptions.
• Assist with root cause analyses and remediation.
• Promote security awareness and best practices across teams.
• Lead and mentor architects and engineers.

Skills

Information Security

Cyber Security Architecture

Solution Architecture

Enterprise Security Design

Threat Modelling

Risk Assessments

Stakeholder Management

Regulated Industries

OT/ICS Security

Bid Support

Job description

About Atos Group

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About Role

Contribution / Impact

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.

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 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.

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 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.

Role Purpose

The Security Architectis responsible forensuring 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 businessobjectives, regulatoryrequirementsand industry best practice.

Key Responsibilities

Security Architecture & Design

• Develop and maintain security architectures, patterns, standardsand 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.

Governance & Assurance

• 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 whereappropriate.
• Ensure compliance with relevant regulations, contractual obligationsand industry frameworks.

Security Strategy & Roadmaps

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

Stakeholder Engagement

• Collaborate with business leaders, delivery teams, operational teams,suppliersand 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.
• Leadand mentor architects,engineersand technical specialists.
• Promote security awareness and best practice across teams.
• Contribute to the development of the organisation's security architecture capability.

Knowledge & Experience

Essential

• Significant experiencein Information Security, Cyber Security Architecture or Solution Architecture.
• Experience designing secure enterprise,cloudand hybrid environments.
• Experience performing threat modelling and security risk assessments.
• Excellent stakeholder management and communication skills.
• Experience within regulated industries (Government, Critical National Infrastructure, Financial Services, Healthcare etc.).
• Knowledge of OT/ICS security environments.
• Experience supporting bids,proposalsand customer engagements.

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

Knowledge of security frameworks and standards such as

• ISO 27001
• NIST CSF
• CIS Controls
• NCSC Guidance
• Secure by Design principles

Qualifications & Certification

Desirable Certifications

• CISSP
• CISM
• SABSA
• CCSP
• TOGAF
• Microsoft Security, Compliance, and Identity Fundamentals(SC-900)
• Strategic thinking
• Technical leadership
• Risk-based decision making
• Problem solving
• Communication and influencing
• Governance and assurance

Success Measures

• Security requirements are embedded early in project lifecycles.
• Risks are identifiedand mitigated effectively.
• Architecture reviews are completed successfully and on time.
• Security compliance obligations are met.
• Stakeholders view the Security Architect as a trusted advisor.

We Care About Our Employees' Happiness By providing

• Pension Scheme - contributions matched up to 10%
• Private medical Cover
• Income Protection
• Life Assurance
• 25 days paid leave + National Holidays
• Flex benefits program

As a Disability Confident employer, we encourage applications from all applicants, especially, differently abled applicants. We aim to ensure that those who meet the minimum criteria for this position will be offered an interview. We are committed and willing to making reasonable adjustments to the application and assessment process to accommodate your needs.

We are a care leaver friendly employer, if you require additional support with your application.

Here at Atos, diversity and inclusion are embedded in our DNA. Read more about our commitment to a fair work environment for all.

Atos is a recognized leader in its industry across Environment, Social and Governance (ESG) criteria.Find out more on our CSR commitment.