Security Architect – Design & Operations
Work with our security and technology teams to ensure security is embedded across the design and operation of IT, network, cloud, and digital services.
Key Responsibilities
Shape enterprise security architecture across applications, infrastructure, networks, mobile, and cloud.
Embed secure‑by‑design principles across technology initiatives.
Oversee security operations, including incident response, monitoring, and managed security services.
Act as a senior escalation point during major security incidents.
Drive risk management, resilience, and regulatory compliance (ISO 27001, NIST, GDPR, PCI DSS).
Partner with IT, network, cloud teams and external providers to deliver secure, scalable solutions.
Influence senior stakeholders by translating technical risk into business impact.
Essential Qualifications
5+ years in senior cybersecurity roles across architecture, risk, and operations.
Hands‑on expertise in security design and operational controls.
Experience with incident response, SOCs, and MSPs.
Broad technical knowledge across enterprise IT, networks (WAN/LAN), and cloud.
Excellent communication and stakeholder engagement skills.
Threat modelling & risk assessment.
Security architecture (application, infrastructure, cloud).
Incident response & forensic investigation.
Vulnerability management & remediation.
Third‑party security governance.
Data protection & privacy.
Desirable
CISSP
CISM
CRISC
ISO 27001
Data Protection
PCI certifications
Benefits
Flexible working model with hybrid arrangements.
Competitive salary, annual performance bonus, and pension contribution.
25 days holiday plus 2.5 company days.
Annual leave buy‑or‑sell option.
Healthcare insurance through flexible benefits programme.
Life assurance, company phone & laptop, subsidised canteen.
Access to learning & development tools such as Coursera.
Free on‑site parking.
We are committed to equity, diversity and inclusion. If you do not tick every box you may still have valuable skills. We encourage you to apply.
At Three, we welcome and celebrate all identities and strive to create a culture of belonging where employees can thrive as their authentic selves.
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