Senior Technical Security Consultant

£85,000 TO 105,000 GBP
Bonus
Hybrid WORKING
Location: Central London, Greater London - United Kingdom Type: Permanent
Senior Technical Security Consultant
Location: UK-wide, with travel to client sites as required
Salary: Up to £105,000 in London / £100,000 outside London, plus benefits
Clearance: Must be eligible to obtain Security Check (SC) clearance
Eligibility: Must already have the right to work in the UK without sponsorship
The Opportunity
We are seeking an experienced Senior Technical Security Consultant to support complex security challenges across the UK public sector, healthcare, defence and central government.
This is an opportunity to take on a senior technical role, providing security architecture expertise and guidance across a range of projects and services. You will work closely with architects, engineers, testers and senior stakeholders to ensure security is embedded throughout the design and delivery lifecycle.
You will contribute to secure-by-design initiatives, assess complex technical solutions and help organisations strengthen their security posture across cloud, infrastructure, networks and applications.
Key Responsibilities

• Act as a senior technical security authority across multiple projects and services.
• Lead security architecture reviews and provide guidance on secure design principles.
• Assess cloud, network, infrastructure and application security controls.
• Review complex technical solutions to ensure they meet security, regulatory and business requirements.
• Conduct and support threat modelling, risk assessments and vulnerability assessments.
• Provide technical oversight of security testing and penetration testing activities.
• Support vulnerability management, helping teams prioritise and remediate security risks.
• Collaborate with architects, engineers, testers and assurance teams to deliver secure solutions.
• Resolve complex technical security challenges and provide recommendations.
• Coach and mentor security practitioners, promoting consistent technical standards and best practice.
• Communicate security risks and recommendations clearly to both technical teams and senior stakeholders.

Essential Skills & Experience

• Significant experience in one or more of the following areas: security architecture, security engineering, cloud security, network security, application security or penetration testing.
• Strong understanding of modern cyber threats, attack techniques and security risks.
• Experience applying secure-by-design principles across enterprise environments.
• Strong knowledge of cloud, infrastructure and enterprise security technologies.
• Experience reviewing security designs, risk assessments and security testing outputs.
• Ability to translate complex technical security concepts into clear, business-focused recommendations.
• Excellent stakeholder management and communication skills.

Qualifications
Relevant industry certifications are advantageous, including:

• CISSP or CCSP
• SABSA or TOGAF
• OSCP, OSWP, CRTO, CRTE, GXPN or CREST qualifications
• Microsoft Azure Cybersecurity Architect Expert
• AWS Security Specialty
• Other recognised cybersecurity certifications.

Additional Information: This role requires flexibility to travel to client sites when needed. Candidates must be eligible to obtain SC security clearance and have the right to work in the UK without requiring sponsorship. Security clearance is subject to the relevant vetting requirements, including the required UK residency history.