Security Architect - SC Clearance

Run-Time Group Ltd; Greater London; Hybrid; GBP 60,000 - 80,000; Full time

Job summary

A leading cybersecurity consultancy in Greater London is seeking a Security Architect for an Outside IR35 Contract. The ideal candidate will lead the design and delivery of secure architectures across enterprise, cloud, and on-prem environments. Responsibilities include threat modeling, risk assessments, and defining security architecture standards. Active SC Clearance is required. This role is on-site for 2 days a week and spans from January 5th to May 31st, 2026.

Qualifications

• Active SC Clearance required.
• Experience in designing secure architectures across enterprise and cloud environments.
• Strong understanding of threat modelling and risk assessments.

Responsibilities

• Lead the design and delivery of secure architectures across various environments.
• Perform threat modeling, risk assessments, and security reviews.
• Define and maintain security architecture standards and technical controls.
• Provide cyber security guidance to teams and leadership.
• Evaluate and recommend security technologies.

Job description

Role : Security Architect

Status : Outside IR35 Contract

Work model : 2 days on site

Clearance : Active SC Clearance required

Duration : 5th of Jan to 31st of May 2026

Responsibilities

Lead the design and delivery of secure architectures across enterprise, cloud, and on-prem environments.

Perform threat modelling, risk assessments, and security reviews for new and existing solutions.

Define and maintain security architecture standards, patterns, and technical controls.

Provide expert cyber security guidance to engineering teams, stakeholders, and senior leadership.

Evaluate and recommend security technologies to strengthen organisational resilience.