Security Architect – Design & Operations

Three Ireland (Hutchison) Limited; Dublin; On-site; EUR 80,000 - 100,000; Full time

Benefits offered by this job

Flexible working model

Annual performance bonus

Pension contribution

Healthcare insurance

Life assurance

Access to learning & development tools

Free on‑site parking

Job summary

Three Ireland (Hutchison) Limited is seeking a Security Architect to drive security across IT, network, cloud, and digital services. Key responsibilities include shaping security architecture, overseeing security operations, and partnering with various teams to deliver secure solutions.

Ideal candidates will have 5+ years in cybersecurity roles with expertise in security design and risk management. This position offers a flexible hybrid working model and a competitive salary, along with attractive benefits such as healthcare insurance and professional development opportunities.

Qualifications

• 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.

Responsibilities

• Shape enterprise security architecture across applications and infrastructure.
• Embed secure‑by‑design principles across technology initiatives.
• Oversee security operations including incident response and monitoring.

Skills

Cybersecurity leadership

Incident response

Risk assessment

Stakeholder engagement

Security architecture

Communication skills

Education

5+ years in senior cybersecurity roles

Tools

ISO 27001

NIST

GDPR

PCI DSS

Job description

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.