Colt provides network, voice and data centre services to thousands of businesses around the world, allowing them to focus on delivering their business goals instead of the underlying infrastructure.

Why we need this role
We are seeking a detail-oriented and proactive security control assurance specialist t o ensure the design, implementation, and ongoing effectiveness of security controls across the organization. This role is critical in validating that security controls meet regulatory, legal, and organizational requirements and are operating effectively to mitigate risk.
The idóneo candidate has strong experience in control testing, audits, and compliance frameworks (e.g., ISO 27001, NIST, SOC 2, NIS2), combined with analytical thinking and stakeholder engagement skills
Join us and you will be part of a fast-growing community of like-minded experts to grow and learn alongside you in your career.

What you will do
Control Assurance & Testing
Plan and execute control assurance activities,



including testing and validation of security controls Develop and maintain control testing methodologies, scripts, and procedures Perform periodic and continuous control monitoring to ensure ongoing effectiveness Identify control gaps, deficiencies, and areas for improvement Compliance & Risk Alignment
Assess controls against relevant frameworks (e.g., ISO 27001, NIST CSF, CIS Controls, SOC 2, NIS2) Assess control effectiveness across: Design Effectiveness (DE), Operating Effectiveness (OE) and Control Automation (CA) Support regulatory and internal compliance initiatives Ensure controls align with organizational risk appetite and policies Audit Support
Act as a key point of contact for internal and external audits Provide evidence, documentation, and walkthroughs for auditors Track audit findings and support remediation efforts Reporting & Documentation

📌 Security control assurance specialist (Madrid)
🏢 Colt Technology Services
📍 Madrid