DV-Cleared Security Architect — Offline Platform Security

Synergize Consulting Ltd; Salisbury; Hybrid; GBP 102,000 - 114,000; Full time

Job summary

Synergize Consulting Ltd is seeking a DV-cleared Security Architect to design, build and assure back-end platform and endpoint security, including air-gapped environments. The role operates across architectural and hands-on levels, coordinating with Infrastructure, Platform and Security teams to meet UK Government security requirements.

The candidate will apply NIST CSF and MOD policies, deliver vulnerability management, and produce formal security documentation.

Qualifications

• Proven experience as Security Architect or senior Security SME in high-assurance environments.
• Designing and delivering platform security controls, AV/EDR and vulnerability management.
• Experience working in offline/air-gapped environments with secure update models.
• Ability to produce formal technical documentation (HLDs/LLDs/SOPs).
• Experience supporting security accreditation and compliance processes.

Responsibilities

• Lead architecture and implementation of endpoint and platform security solutions.
• Design security controls aligned with MOD policies, NIST CSF and NCSC guidance.
• Develop vulnerability management capabilities: scanning, risk prioritisation, remediation and reporting.
• Develop security for offline/air-gapped environments, including controlled updates.
• Establish secure data transfer and threat intelligence ingestion in disconnected environments.
• Define vulnerability scanning regimes and remediation processes.
• Advise on endpoint hardening, firewall rules, ports, protocols and system security controls.
• Produce and maintain security documentation (HLDs, LLDs, SOPs).
• Support security accreditation, assurance and compliance processes.

Skills

Security architecture

Endpoint protection

Vulnerability management

Air-gapped environments

MOD/NIST policy compliance

Penetration testing awareness

Documentation (HLD/LLD/SOPs)

Security accreditation support

Threat intelligence ingestion

Job description

Synergize Consulting Ltd is seeking a DV-cleared Security Architect to design, build and assure back-end platform and endpoint security, including air-gapped environments. The role operates across architectural and hands-on levels, coordinating with Infrastructure, Platform and Security teams to meet UK Government security requirements.

The candidate will apply NIST CSF and MOD policies, deliver vulnerability management, and produce formal security documentation.