Senior Security Engineer Product Security

You will work with product engineering teams to review new services, build threat models, remediate security issues, and strengthen product security across web applications, APIs, cloud infrastructure, and smart contracts. You will own vulnerability-management processes and security-focused AI agents, while keeping threat models and attack graphs current as products evolve.

Responsibilities

• Own the vulnerability management program, including Bugcrowd and Immunefi bug bounties and scanner findings
• Maintain more than 90% SLA compliance for critical and high-severity issues
• Own AI agents that review pull requests for security issues and triage incoming bugs
• Build and maintain a security context layer for agent triage and proposed fixes
• Keep threat models and attack graphs current as products change
• Review new services with product engineering teams
• Build threat models with engineering teams
• Fix security issues in production code

Requirements

• Demonstrated application security expertise, including identifying and remediating authentication and injection vulnerabilities
• Software engineering capability to ship production code and build tools
• Experience building AI tooling, such as agents, automations, or internal tools
• AWS security experience, including IAM, network controls, secrets, and misconfigurations
• Ability to work autonomously with engineers and support a small security team

Benefits

• Employee Stock Options (ESOP)
• Flexible work model, including Sydney hybrid work three days per week and remote work-from-home options
• WeWork All-Access pass for global office hubs
• Fresh daily lunch in the Sydney CBD office
• Quarterly End of Cycle Celebration Awards
• USD 500 work-from-home allowance
• USD 600 annual internet and phone allowance
• USD 75 quarterly remote employee celebration allowance
• Medical and 401K insurance for US employees
• Novated leasing for Australian employees
• USD 800 annual health and wellbeing allowance
• 24/7 unlimited counselling through an EAP service
• ClassPass subsidy, discounted rate, and one-year Breethe membership
• Paid parental leave
• Two additional paid annual leave days at the end of the year
• Paid birthday leave