Zero-Trust Microsoft Security Architect (Defender/Entra Purview)

Colt Technology Services; Barcelona; Hybrid; EUR 90,000 - 120,000; Full time

Benefits offered by this job

Flexible working hours

Work from home option

Extensive induction program

Development opportunities

Global Family Leave Policy

Employee Assistance Program

Inclusion & diversity networks

Job summary

Colt Technology Services is seeking a Security Architect with a focus on the Microsoft Security platform (M365 E5) to lead design authority and secure the organisation’s modern security posture.

You will own architecture for Defender, Entra ID and Purview, drive Zero Trust adoption, and coordinate with SOC, Risk and Engineering to implement integrated security across a hybrid Colt estate.

Qualifications

• 5+ years of information security experience in large-scale enterprises or telecoms.
• Deep expertise in Microsoft 365 E5 security tools: Defender, Entra ID, Sentinel, Purview.
• Strong ability to translate security concepts into business outcomes.
• Solid understanding of Zero Trust and cloud security across IaaS/PaaS/SaaS.
• Experience designing security architectures and conducting risk assessments.

Responsibilities

• Act as design authority for Microsoft Security architecture (Defender, Entra ID, Purview).
• Define target architecture for the Microsoft security platform aligned to Zero Trust.
• Lead Defender deployment across endpoints, identities and user-facing services.
• Define integration patterns between Defender and non-Microsoft tooling.
• Deliver Microsoft Purview solutions including DLP and information protection.
• Define identity-first security controls using Entra ID (P2) including CA, MFA, PIM.
• Support SOC modernization leveraging Defender and Sentinel telemetry.
• Develop governance for AI/LLM security, ensure data protection and least-privilege access.
• Ensure secure deployment at scale across hybrid estate and regulatory alignment.

Skills

Microsoft 365 E5 security

Defender

Entra ID

Sentinel

Purview

Zero Trust

Security design

Stakeholder management

English communication

Azure cloud security

Education

Engineering/Computer Science degree

Job description

Colt Technology Services is seeking a Security Architect with a focus on the Microsoft Security platform (M365 E5) to lead design authority and secure the organisation’s modern security posture.

You will own architecture for Defender, Entra ID and Purview, drive Zero Trust adoption, and coordinate with SOC, Risk and Engineering to implement integrated security across a hybrid Colt estate.