Lead Security Engineer

Location : Sydney, Australia (Hybrid - 3 days per week in office)

About Us

At Relevance AI, our mission is to empower anyone to delegate work to the AI workforce.

We're building a new type of automation platform, for anyone to create and use AI agents that can replicate human quality work, decision making and collaboration.

We are scaling fast to meet unprecedented customer demand and we need exceptional talent to help us grow. If you're ready to be part of a trailblazing company at the cutting edge of AI, this is the place for you.

The Role

We are looking for our first Security Engineer to join our team in Sydney. Open to hiring at Senior/ Staff/ Principal level. This is your chance to take ownership of critical security initiatives, lead incident response efforts, and shape the security posture of a rapidly growing AI company and agent orchestration platform trusted by thousands of customers.

Reporting to our Director of Engineering, your work will directly protect our enterprise customers and infrastructure, while enabling secure innovation. You'll have the autonomy and trust to implement security best practices, lead security programs, and engage confidently with both internal teams and external enterprise clients.

You'll work closely with engineering teams across our cloud infrastructure and SaaS platform, focusing on strengthening platform security, vulnerability management, secure software development practices, and ensuring compliance with frameworks like SOC 2 and ISO 27001.

Our fast-paced, collaborative culture values your expertise and encourages proactive security leadership to build systems that are secure by design.

Your Impact

• Take ownership of security initiatives from the ground-up, including implementing best-practice security processes, and leading incident monitoring and response efforts.

• Enhance the security posture of our enterprise products by proactively identifying and addressing vulnerabilities.

• Oversee and administer an industry-standard vulnerability reward program.

• Drive continuous improvement in security compliance, monitoring, and governance, including emerging challenges around AI agent security.

• Serve as a trusted security expert and collaborate closely with engineering teams to embed security best practices and build secure systems by design.

• Represent the company in customer-facing security discussions, providing authoritative technical assurance to enterprise clients.

Our Tech Stack (so far)

• Cloud: AWS

• Infrastructure & Orchestration: Kubernetes, Terraform

• Backend: Node, Python

• Database: PostgreSQL, MongoDB

• Security Tooling: Snyk, GitHub

What We're Looking For

• 5+ years in software/ security engineering, specializing in securing cloud-based SaaS platforms.

• Deep expertise in cloud infrastructure security (AWS preferred).

• Experience implementing and managing security processes: incident response, vulnerability management, SOC 2/ ISO 27001 compliance.

• Strong technical credibility and experience influencing teams on secure development practices.

• Confident addressing security questions and supporting enterprise sales security discussions.

• Thrive in fast-paced, high-trust startup environments and a proactive problem-solver.

• Excellent communication skills and ability to translate complex security concepts for technical and non-technical audiences.

• Passionate about advancing AI security, multi-agent systems, and emerging AI governance challenges.

Interview Process

1. Talent Interview (virtual)

2. Hiring Manager Interview (virtual)

3. Technical Interviews (onsite)

4. Co-Founder Interview (virtual/ onsite)

Why Join Us?

• Work at the forefront of AI with a nimble team that is constantly pushing boundaries. We encourage and celebrate ideas that drive our mission forward.

• We're guided by our five values: truth-seeking, being empathetic, putting the customer first, iterating extremely fast, and building memories.

• We've set high standards in our high-trust, low-ego environment. We hire exceptional people to do the best work of their lives. In return, we reward our people with competitive salaries, equity stake, unparalleled professional growth, and career-defining opportunities.

• Relevance AI is well-funded by leading investors, including Bessemer Venture Partners, Insights Partners, Peak XV, and King River Capital.

• As an early team member, you'll play a key role in shaping our future—including our culture, ways of working, and even the benefits we offer. We're laying the foundations now, and your ideas can help define what comes next.

Benefits

• 4 Weeks Annual Leave – Take time to recharge with 20 days of paid vacation

• ESOP – Employee Stock Ownership Plan so you can grow with the company

• AI Productivity Benefit – Get up to $1200 USD/year to spend on AI tools, courses, and learning resources that help you work smarter and grow your skills

• Parental Leave – We offer 12 weeks of paid parental leave for all eligible new parents, and an additional 6 weeks for the birthing parent

• Milestone Merch – Celebrate your work anniversaries with customised Relevance AI swag

• Team Meals – Enjoy free Friday lunches, Uber Eats dinners, and regular catered office lunches

• Quarterly Team Events – Build stronger connections through fun, meaningful team bonding experiences every quarter

• Social Clubs – Share your hobbies and interests by joining or starting a club with your teammates. A few clubs we already have are hiking, chess, and board game nights. We also have a social committee you can join—new ideas are always welcome

• Snacks & Drinks Galore – Stay energised with a wide selection of snacks and a fully stocked fridge of drinks in the office

• Community Events – As the home of the AI workforce, we regularly host events featuring thought leaders, industry partners, and the wider community—right at our office, so you can join straight after work

• Sonder EAP – Access 24/7 mental health and wellbeing support through Sonder, our Employee Assistance Program