Principal Software Development Engineer in Test – Full Stack

We are looking for a full-stack Principal Software Development Engineer in Test to join us in validating our security products and associated platforms. The successful candidate will be a self-starter with an automate-first and AI-first mindset, ready to validate complex test environments with many touch points across UI, API, services, cloud platforms, integrations, data, and third-party systems.

This role requires someone who can combine deep hands-on engineering capability with technical leadership, using modern automation, CI/CD, observability, and AI-enabled engineering practices to improve quality, speed, reliability, and release confidence.

A positive attitude, strong ownership mindset, and willingness to learn, coach, and share knowledge are essential.

At Mimecast, Principal Software Development Engineers in Test are responsible for:

• Providi...