Lead Cyber Consultant - AI Security Engineering

About us Mantel is an Australian-owned IT Professional Services consultancy, focused on emerging technology to help advance our clients by leveraging AI, Digital, Cloud, Data & Security technology. We are a fully AI-enabled technology consultancy and the partner that bridges the gap between blue-sky ambition and practical steps to deliver value. Since our inception in November 2017, we have experienced remarkable growth across Australia & New Zealand and are honoured to be recognised as a Great Place to Work for 6 years in a row! We hire smart and talented people and get out of their way. As a principle-based organisation, we have a flat structure with no hierarchy. By focusing on our five principles and not getting caught up in red tape, we trust you to get the job done! Working in our emerging and growing cybersecurity capability, you will work closely with clients across our teams. Our security capabilities span governance, risk and compliance (GRC, our Advisory capability), cyber engineering and offensive security. We enable large-scale cyber security initiatives for our clients and improve the protection of IT environments. About the role This role will focus on newly emerging market demand and client requirements around Agentic AI risk and security controls. Primarily assisting enterprise clients across two cyber control areas relating to AI in terms of risk and security controls - (1) Frontier AI models as a threat actor, defending against attackers who now move at AI speed and scale; (2) AI as an attack surface, securing the AI systems, models, and agents that are built, as assets in their own right. Your day-to-day Technical cyber and AI security leadership to guide design and implementation of security controls for large enterprise clients Secure AI platform builds across the full delivery lifecycle: threat modelling, secure architecture review, AI security posture by design, and guardrail design (Bedrock, AI Foundry, Vertex) Agentic AI security: non-human identity, tool and permission controls, and runtime containment, assessed against OWASP Agentic (ASI01–10) and MITRE ATLAS AI security engineering: model supply chain, MLOps pipeline security, RAG/LLM integration security, and secure AI-assisted development Operationalise reusable AI security control libraries and accelerators on client engagements, mapped to CPS 234, ISO 42001, and NIST AI RMF Work closely with Cloud, Data & AI, and Digital delivery teams, as a cross-domain build role instead of a siloed cyber one Providing industry experience and recommendations across a wide range of technologies and solutions Supporting clients with technology rationalisation, vendor selection and solution design Architect, design, build and deploy data, application and infrastructure security solutions across cloud and data environments Work closely with security alliance partners particularly Wiz and Palo Alto but also when required cloud hyperscalers Google & AWS and occasionally specialised partners across the cybersecurity market Conduct Security Review Processes for: Security Architecture and Design System specific thread modelling Secure Coding Security Testing Software Development Life Cycle Use professional judgement while treating colleagues and clients with respect and compassion, and a demonstrated ability to display our Mantel principles What you’ll need to be successful: Working knowledge of AI and LLM systems including agentic patterns, MCP, RAG, model serving and AI security threat landscape Experience operating as senior technical security voice in cross-functional forums making rapid decisions and influencing senior stakeholders. Experience leading rigorous technical assessments of complex AI systems translating findings into actionable engineering guidance and leading and guiding any subsequent implementation of these security controls Strong software engineering capability with production experience in Python, Go, TypeScript or similar. Practical hands-on experience with LLM and agentic technology including proxies, gateways, MCP servers, prompt engineering and AI development tooling. Experience in security architecture, application security, cloud security or similar disciplines, specifically in security solutions and control implementation context Proven ability to develop security solution designs, as well as to integrate and configure security tools into new or existing software delivery pipelines Experience in leading teams and projects as well as mentoring and leading junior consultants Excellent written and verbal communication skills including the ability to liaise with and influence diverse stakeholder groups Willingness to continually upskill; including learning new technologies and obtaining new certifications At Mantel, we want you to be yourself. We trust our team members to use their professional judgment while treating colleagues and clients with respect, compassion, and professionalism in alignment with our five principles. You take ownership, always stepping up to help and prioritising your teammates. You're also a clear, kind communicator who makes sound decisions based on good judgement. Nice to have: Relevant Industry certifications (e.g. SABSA, CISSP, CISM, CCSK, IRAP, etc.) and / or security vendor certifications (Palo Alto, Snyk, Wiz) Cloud experience or certifications (e.g. AWS/Azure/GCP) Experience with cloud native technologies and solutions Software development experience Experience designing or building security controls into AI enabled applications Hands-on experience implementing security solutions Experience working with risk management systems and reporting systems Experience or understand of developing and implementing a Continuous Control Monitoring capability What you can expect from us: You’ll get all the tools you need to hit the ground running including a new phone, laptop & swag. We believe in unique experiences for all. Our My Deal program allows you to tailor your yearly plan, with the support of your Leader, to decide on what’s most important to you. That might be extra professional development, extra annual leave, time to work on your side hustle, or something else completely different! One size does not fit all. A true investment in your career, including support for tomorrow in areas such as AI. This includes access to the Mantel AI Gateway, our secure, centralised platform with multiple AI models, plus a dedicated monthly budget and a safe environment to experiment and innovate. You’ll be genuinely supported by an organisation that cares about not only you but your family as well, Mantel offers Flexible Personal Leave options for those unplanned moments in life. We support a flexible hybrid approach to working which is guided by our principles; we trust each other to “make good choices” about the best workplace locations for the requirements of the project, role and client. This can change based on our client needs. We know you won’t have one job for life. At Mantel, we believe in supporting our team to take their career in a direction that aligns with their passions. We have internal opportunities across Cloud, Data, Digital, Delivery & Security. Our elite partnerships are a direct result of our deep platform mastery. For you, this means you'll be working alongside teams with the highest levels of technical expertise and tackling the most complex, high-profile projects on the market. Check out our partner awards and recognitions here. Mantel is a certified Family Inclusive Workplace, which means we are committed to improving your wellbeing at work through leading practices on flexible work, parental leave, family care and family wellbeing Click ‘Apply for this job’ to be considered for this role and our Talent team will be in touch. We value a diverse workplace and strongly encourage people from all backgrounds and minority groups to apply.