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.
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 ideal candidate has strong experience in control testing, audits, and compliance frameworks (e.g., 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
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)
Ensure controls align with organizational risk appetite and policies
Document control testing results, findings, and risk implications
Maintain control inventories and assurance documentation
Partner with IT,



security engineering, and business teams to evaluate controls
Support control owners in remediation planning and execution
Provide guidance on control design and best practices
3–6+ years of experience in information security, IT audit, or GRC
~ Proven experience with security control testing and assurance activities
~ CIS Critical Security Controls
~ Ability to interpret technical controls and translate into business risk
~ ServiceNow GRC, Archer, OneTrust)
Experience with cloud environments (Azure, AWS, GCP) and related controls
Our global teams are full of ambitious, driven people, all working together towards one shared purpose: to put the power of the digital universe in the hands of our customers wherever, whenever and however they want.
We give our people the opportunity to inspire and lead teams, and work on projects that connect people, cities, businesses, and ideas. Signed the UN Women Empowerment Principles which guide our Gender Action Plan
Flexible working hours and the option to work from home.
Integral Family Leave Policy.
Internal inclusion & diversity employee networks.
A global network
~ When you join Colt you become part of our global network. We are proud of our colleagues and the stories and experience they bring – take a look at ‘Our People’ site including our Empowered Women in Tech.

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📌 Security Technology Specialist (Madrid)
🏢 Colt Technology Services
📍 Madrid