Security Engineer

Security Engineer - Robert Walters - London or Manchester
Clearance: SC (or willing to undergo)
Start Date: ASAP

This role can be delivered:

• Remotely (UK-based)

• On a hybrid basis

• Or fully on-site, depending on your preference and project needs

Security-cleared environments may occasionally require on-site presence for specific tasks

About the Role

We are seeking a Security Engineer to join a high-impact, cross-departmental initiative for a client within the public sector industry. The team is building a highly secure, AI-enhanced platform that integrates data from multiple sources to power next-generation digital public services.

This is an opportunity to work on a mission-critical system where security is foundational, not an afterthought. You'll play a leading role in shaping the security architecture, processes, and governance for one of the most ambitious AI public sector projects in the UK.

Key Responsibilities

• Act as the first line of security support, leading threat modelling (STRIDE) and conducting risk assessments, including third-party vendor reviews.
• Produce and maintain security documentation, including architectural decisions, in-house testing results, and penetration test scopes and remediation plans.
• Drive the creation of security artifacts across the product life cycle, aligned with internal governance and compliance standards.
• Design and maintain secure architecture across AI-driven systems, ensuring alignment with Secure by Design principles for both PoC and production environments.
• Ensure secure integration of large language models (LLMs), third-party APIs, and cloud-native services (eg, AWS, Azure, GCP).
• Contribute to the security governance framework, defining localised standards, processes, and controls for the AI platform.

Essential Skills & Experience

Strong practical knowledge of:

• UK GDPR
• OWASP Web Application Security
• OWASP LLM Top 10
• OWASP MASVS
• OWASP AI Top 10 Agentic AI Threats
• OWASP GenAI Red Teaming Guide
• ISO/IEC 42001:2023 - IT AI Management System
• Demonstrable experience applying threat modelling methodologies (eg, STRIDE).
• Expertise in building and maintaining secure architectures for AI/ML systems.
• Familiarity with DevSecOps, cloud-native environments, and secure API integration.
• Experience working in or with government or highly regulated sectors.

Why Join?

• Shape the future of AI and cybersecurity in government.
• Be part of a high-performing, mission-driven team.
• Work on a secure, scalable, and ethically governed AI platform.
• Contribute to national digital transformation with a lasting public impact.

*Please note that this role can be worked on a flexible approach including full remote, hybrid or onsite as long as you're willing to attend onsite meetings when required.*

We are committed to creating an inclusive recruitment experience.If you have a disability or long-term health condition and require adjustments to the recruitment process, our Adjustment Concierge Service is here to support you. Please reach out to us at (see below) to discuss further.

This position is being recruited on behalf of our client through our Outsourcing service line. Resource Solutions Limited, trading as Robert Walters, acts as an employment business and agency, partnering with top organizations to help them find the best talent. We welcome applications from all candidates and are committed to providing equal opportunities.