Senior Cyber Security Engineer

As a Senior Cyber Security Engineer, you will lead our security efforts across a number of key projects, bridging the gap between robust engineering and AI safety. You will play a pivotal role in securing critical infrastructure for high-stakes projects while pioneering offensive "Capture the Flag" scenarios to test the limits of frontier AI models.

If you are a talented software engineer with a security mindset who thrives on solving complex, real-world problems, this is your opportunity to shape the future of AI safety.

What you'll be doing:

• Designing and building sophisticated "Capture the Flag" puzzles and scaffolding to rigorously test the security and capabilities of frontier AI models and agentic systems.
• Setting technical standards for cyber security across our consulting and AI safety business units, acting as the senior technical authority for deployed security practices.
• Implementing and securing cloud-native environments while managing identity, access, and logging across multiple client deployments.
• Collaborating within cross-functional teams of machine learning engineers, data scientists, and designers to ensure security is woven into the fabric of the projects you deliver.
• Automating security processes, vulnerability management, and secure development lifecycles to create resilient, scalable software.
• Mentoring and guiding junior engineers and data scientists, fostering a culture of technical excellence and continuous security learning.

Do you have experience in Python?, * You are a solid software engineer with a deep interest in security, possessing strong Python skills and the ability personally to maintain and adjust complex infrastructure.

• You possess hands-on experience with cloud security tools (such as Security Hub, IAM, and WAF) and a firm understanding of identity management protocols like OAuth2.0 and SAML.
• You have a proven track record in vulnerability management and securing the application development lifecycle, including container scanning and automated testing.
• You bring a creative and curious mindset to offensive security, ideally with experience in CTF exercises or red-teaming scenarios.
• You are a clear and persuasive communicator, comfortable acting as a technical advisor to clients and translating complex risks into actionable engineering tasks.
• You thrive on autonomy and ownership, ready to step into a senior role where you will define best practices in a fast-paced, evolving domain.

• Unlimited Annual Leave Policy
• Private healthcare and dental
• Enhanced parental leave
• Family-Friendly Flexibility & Flexible working
• Sanctus Coaching
• Hybrid Working (2 days in our Old Street office, London)

We established Faculty in 2014 because we thought that AI would be the most important technology of our time. Since then, we've worked with over 350 global customers to transform their performance through human-centric AI. You can read about our real-world impact here. We don't chase hype cycles. We innovate, build and deploy responsible AI which moves the needle - and we know a thing or two about doing it well. We bring an unparalleled depth of technical, product and delivery expertise to our clients who span government, finance, retail, energy, life sciences and defence. Our business, and reputation, is growing fast and we're always on the lookout for individuals who share our intellectual curiosity and desire to build a positive legacy through technology. AI is an epoch-defining technology, join a company where you'll be empowered to envision its most powerful applications, and to make them happen. About the team Our Government and Public Services business unit is committed to leveraging AI for the benefit of individual citizens and the public good. From our work informing strategic government decisions, to optimising our NHS, through to protecting children from harmful online content - we know that AI offers opportunities to drive improvements at every level of Government and we are proud to lead on some of the most impactful work happening in the sector. Because of the nature of the work we do with our Government clients, you may need to be eligible for UK Security Clearance (SC) and willing to work on site with these customers from time to time.