Senior Application Security Engineer

Secure the applications powering next-generation AI infrastructure.

We're looking for a hands-on Senior Application Security Engineer to own the security of a large-scale cloud platform, public APIs, and AI-powered applications.

What You'll Do

- Own application security across APIs, services, and customer-facing platforms.

- Lead secure software delivery through SAST, DAST, SCA, secrets detection, and SBOMs.

- Perform threat modelling, security reviews, and architecture assessments.

- Define standards for authentication, authorisation, tenant isolation, and secrets management.

- Secure AI assistants and agentic applications against risks such as prompt injection, tool misuse, and data leakage.

- Work directly with engineering teams to automate security, reduce risk, and improve software quality.

What We're Looking For





- 7+ years in Application Security, Product Security, or Security-focused Software Engineering.

- Strong knowledge of OWASP Top 10 and OWASP API Security Top 10.

- Experience securing public cloud or multi-tenant platforms.

- Hands-on experience with SAST, DAST, SCA, secrets management, and CI/CD security.

- Strong coding skills in Python, Go, or TypeScript.

- Experience with OAuth, OIDC, JWT, RBAC, ABAC, and contemporary authentication patterns.

- Exposure to AI/LLM security is highly desirable.

Nice to Have

- AI agent security experience.

- SOC 2 or ISO 27001 environments.

- CSSLP, OSWE, or similar security certifications.

📌 Senior Application Security Engineer (Sydney)
🏢 Talenza
📍 Sydney