Principal Security & Trust Engineer (AI‑SaaS)

Checkbox, a Sydney-based AI-first SaaS start-up, is seeking a hands-on Principal Security Engineer to own application, cloud and infrastructure security, SIEM, vulnerability management and customer trust initiatives. You will work across Product, Engineering, Platform, Identity, IT and Legal to embed security into design, build, deploy and operate software, while shaping guardrails for safe AI usage across the company. J-18808-Ljbffr