Nasstar
Senior Security Control Manager
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Role Overview
This role is responsible for leading Nasstar’s compliance with the Telecoms Security Act (TSA) and associated Ofcom regulatory requirements, ensuring the organisation can evidence a robust and defensible security posture.
As a key member of the Risk & Compliance function, this role operates at the intersection of regulation and technology, partnering closely with engineering, security, and operational teams to translate regulatory expectations into practical, real-world control effectiveness.
This is a high-impact role with visibility across senior stakeholders and direct relevance to the protection of critical national infrastructure.
Key Responsibilities
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TSA Compliance & Regulatory Engagement
- Lead delivery of Telecoms Security Act compliance activities.
- Coordinate responses to Ofcom information requests and regulatory submissions.
- Interpret TSA Code of Practice measures and translate into business and technical actions.
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Technical Assurance & Evidence Validation
- Partner closely with Core Engineering, Voice, OSS, Operations, Procurement and IT & Security teams to gather required information.
- Review and validate technical, architectural, and operational evidence.
- Provide effective, evidence-based challenge and ensure submissions are complete, accurate, and aligned to regulatory expectations.
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Risk & Control Assessment
- Identify gaps in evidence, control weaknesses, and areas requiring remediation.
- Assess adequacy of compensating controls where full compliance is not achieved.
- Apply risk scoring in line with Nasstar’s risk management framework.
- Focus on risks impacting Security Critical Functions and supporting network oversight capabilities.
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Framework Alignment & Governance
- Align TSA requirements with broader frameworks such as NCSC CAF, ISO 27001 and HSCN.
- Support governance reporting and risk committee discussions.
- Contribute to the development of internal assurance and control frameworks.
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Third-Party Security & Contractual Oversight
- Review and advise on supplier contracts to ensure security obligations are appropriate and enforceable.
- Support Legal & Procurement with security requirements and risk considerations.
- Contribute to third-party risk and assurance activities.
Skills, Knowledge and Expertise
- Experienced in one or more of the following areas:
- Telecoms or network service provider environments
- Cyber security, network security, or infrastructure security
- Risk, compliance, or regulatory assurance within technology functions
- Supporting or responding to regulatory frameworks (e.g. TSA, NCSC CAF, ISO 27001, NIS)
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Experience operating in a second line (GRC) or assurance capacity, rather than hands-on engineering or operational delivery
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Ability to engage with asset owners and technical SMEs to:
- Extract relevant control evidence
- Validate that controls are appropriately designed and operating
- Challenge where control coverage or assurance appears insufficient
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At least one certification from the following: (ISC)² / ISACA:
- CISSP – Certified Information Systems Security Professional
- CISM – Certified Information Security Manager
- CRISC – Certified in Risk and Information Systems Control
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Industry Network Security Certifications (desirable):
- CCNP Security / CCSP / CCNA Security
- CompTIA Security+ / Network+
- Equivalent vendor or industry-recognised certifications
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Demonstrated ability to interpret technical concepts and align them to security or regulatory requirements.
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Assess control effectiveness and identify gaps or weaknesses.
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Experience within a regulated telecoms environment, particularly under either Telecoms Security Act (TSA) or Ofcom regulatory engagement.
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