Security Lead

Summer Browning Associates; Greater London; Hybrid; GBP 90,000 - 130,000; Part time

Job summary

Summer Browning Associates is partnering with a Central Government client to appoint a Security Lead for an initial 6-month assignment in London, with hybrid working. The role requires a senior security leadership background and active security clearance within a high-threat government environment.

The candidate will drive secure cloud transformation, establish security strategy and governance, and lead multi-agency collaboration to ensure robust risk management and compliance across programmes.

Qualifications

• Proven experience leading security programmes for large-scale cloud transformation in high-threat environments.
• Strong understanding of security policy, architecture and assurance.
• Knowledge of cybersecurity frameworks and standards (NIST, ISO 27001, CAF, NCSC CAF).
• Industry certifications (e.g., CISSP, CISM, CompTIA Security+) are highly desirable.

Responsibilities

• Lead security programmes for the client’s cloud transformation in a high-threat government setting.
• Develop and implement security strategy, policy, and assurance across programmes.
• Influence and guide secure working practices with government and multi-agency stakeholders.

Skills

Security leadership

Cloud security

IAM

Security strategy

Stakeholder mgmt

Lead Accreditation

Security frameworks

Job description

Summer-Browning Associates is assisting our client in the Central Government who is seeking a Security Lead for an initial 6-month assignment, with the possibility of extension.

Location: London | Hybrid

The ideal candidate will possess a security clearance and have a strong background in a senior security leadership role within a high-threat government environment.

The following skills and experience are required:

• Experience in leading security programmes for large-scale cloud transformation within high-threat government Tier 2/3 secure environments.
• A solid understanding of security strategy, policy, security architecture, and assurance.
• Extensive knowledge of Azure/GCP cloud security, identity and access management (IAM), gateways, cryptography, and secure developer enablement.
• Proven ability to guide, influence, and lead secure working practices.
• Strong stakeholder management skills across government and multi-agency security.
• Experience with Lead Accreditation and Security Case Development.
• Demonstrable knowledge of cybersecurity frameworks and standards, including the NCSC Cyber Assessment Framework, NIST, ISO 27001, CIS, CAF, HMG GovS 007, and NPSA.
• Preferred Qualifications: Industry certifications such as CompTIA Security+, CISSP, CISM, CEH, or GIAC are highly desirable.