Security Architect in Milton Keynes

Based at client locations, working remotely, or based in our Godalming or Milton Keynes offices. Up to £75K plus excellent company benefits.

About Us

Triad Group Plc is an award-winning digital, data, and solutions consultancy with over 35 years’ experience primarily serving the UK public sector and central government. We deliver high-quality solutions that make a real difference to users, citizens and consumers. At Triad, collaboration thrives, knowledge is shared, and every voice matters. Our close-knit, supportive culture ensures you’re valued from day one. Whether working with cutting-edge tech or shaping strategy for national-scale projects, you’ll be trusted, challenged, and empowered to grow. We nurture learning through communities of practice and encourage creativity, autonomy, and innovation.

Role Summary

Triad is seeking a Security Architect; you will play a critical role in designing, assuring, and delivering secure solutions across our client engagements. You will champion Secure by Design principles and lead threat modelling activities to ensure risks are identified and mitigated early in the lifecycle. Working closely with stakeholders, you will define security architectures, ensure compliance with relevant standards, and embed security best practices throughout delivery.

Key Responsibilities

• Security Architecture Design – Develop and maintain secure architecture patterns, ensuring alignment with business and technical requirements
• Secure by Design – Embed security into every stage of the solution lifecycle, ensuring systems are designed with security controls from the outset rather than retrofitted.
• Threat Modelling – Lead and facilitate threat modelling exercises (e.g. STRIDE), identifying vulnerabilities and defining mitigations early in delivery
• Risk Assessment – Identify, assess, and mitigate security risks across systems, applications, and infrastructure
• Security Assurance – Provide governance and assurance across projects, ensuring compliance with security standards and frameworks
• Stakeholder Engagement – Collaborate with clients, delivery teams, and senior stakeholders to embed security into solution design
• Standards & Compliance – Ensure adherence to industry standards such as ISO 27001, NIST, and government security policies

Skills and Experience

• Experience working as a Security Architect or in a senior security role within complex environments
• Strong practical experience applying Secure by Design principles in modern architectures
• Hands-on experience conducting threat modelling (e.g. STRIDE, attack trees) and risk analysis
• Strong understanding of security frameworks and best practice such as ISO 27001, NIST, CIS, OWASP, NCSC guidance
• Experience working in the UK Public Sector and associated security standards and guidance including GovAssure/NCSC CAF, HMG Security Policy Framework.
• Knowledge of cloud security principles across platforms such as AWS, Azure, or GCP
• Experience with identity and access management, encryption, network security, and secure application design including security tooling
• Ability to communicate complex security concepts to both technical and non-technical stakeholders
• Experience supporting agile delivery teams

Qualifications & Certifications

• A degree or equivalent qualification related to the area you work in – Desirable
• Relevant certifications such as CISSP, CISM, TOGAF, or SABSA – Desirable
• Due to the nature of this position, you must be willing and eligible to achieve a minimum of SC clearance. To be eligible, you must have been a resident in the UK for a minimum of 5 years and have the right to work in the UK.

Triad’s Commitment to You

• Continuous Training & Development: Access to top-rated Udemy Business courses
• Work Environment: Collaborative, creative, and free from discrimination
• 25 days of annual leave, plus bank holidays
• Matched pension contributions (5%)
• Private healthcare with Bupa
• Gym membership support or Lakeshore Fitness access

Our Selection Process

After applying for the role, our in-house talent team will contact you to discuss Triad and the position. If shortlisted, you will be invited for:

• A first-stage interview with our Architecture team
• A second stage interview with one of the Management team, including a career review

We aim to complete interviews and progress candidates to the offer stage within 2-3 weeks of the initial conversation.

Triad is an equal opportunities employer and welcomes applications from all suitably qualified people regardless of sex, race, disability, age, sexual orientation, gender reassignment, religion, or belief. We are proud that our recruitment process has been recognised as inclusive and accessible to disabled people who meet the minimum criteria for any role. We are a signatory on the Tech Talent Charter that aims to bring industries and organisations together to drive greater inclusion and diversity in technology roles, in addition, as a Disability Confident Leader.