Engineer Sam Jadallah announced this week that he’s leaving Apple after working at the company for less than three years. At Apple, Jadallah was the Head of Home Services, which includes the HomeKit system for home automation.

The reasons why the engineer decided to leave Apple are unknown. It’s also unclear who will take over as head of HomeKit at Apple after Jadallah’s departure.

That’s a wrap with Apple. I’m so grateful for the friendships that will endure and the opportunity to shape and create new capabilities for people and homes around the world. As a corporate exec, investor and entrepreneur, it was a treat to be an entrepreneur within Apple and to create products at scale.

Since Jadallah joined Apple, the company has made several enhancements to HomeKit, which include security camera recording in iCloud, improved accessory controls, adaptive lighting, automations, Siri API for third-party accessories, and home keys in the Wallet app.