Principal Software Development Engineer in Test (macOS)

ThreatDown is looking for

an experienced Mac Automation Quality Engineer with a strong background in endpoint security and macOS platform testing. This role is ideal for someone who thrives in a fast-paced, multi-product environment, enjoys building scalable automation frameworks, and has a passion for uncovering complex platform and security-related issues.

You’ll work closely with Engineering, Product Management, and Security teams to ensure high-quality delivery across modern macOS environments, while working on cutting‑edge endpoint security technologies, helping secure enterprise environments at scale, collaborating with highly technical engineering and security teams, influencing automation strategy and quality practices across multiple products, and gaining deep exposure to the macOS security ecosystem and Apple Silicon platforms.

What You Will Do

• Design, develop, and maintain automated test suites using Python and PyTest