Who is John Ternus, Apple's new CEO after Tim Cook?

Tim Cook was 50 years old when Steve Jobs handed him Apple. John Ternus is also 50. On September 1, he will become only the third CEO in Apple's history and the first to inherit the company at a moment when artificial intelligence is rewriting the rules of consumer technology.

Ternus has never run a company before. His Apple reputation shows him as an engineer who follows precise details to deliver products with complete quality control, which helped Apple during its hardware operations but will face challenges in the software intelligence era.

Who is John Ternus and how he got here?

Ternus started working at Apple in 2001 as a product design engineer at the same time the original iPod launched. He started his career in the hardware organisation and worked there for twelve years until he became vice president of hardware engineering in 2013. He achieved the senior vice president of hardware engineering position in 2021 and reported directly to Cook as a member of the executive team.

Before joining Apple, he was a mechanical engineer with Virtual Research Systems and earned a bachelor’s degree in mechanical engineering from the University of Pennsylvania. From the very beginning of his professional life, everything about him has been defined by his mechanical engineering background.

Ternus's fingerprints are on the products that defined Apple's last decade. He oversaw the transition from Intel chips to Apple Silicon, the M-series processors that handed Mac an unusual competitive edge in a laptop market that had been stagnant for years. Mac gained meaningful market share during that period, a result industry analysts tied directly to the chip transition Ternus championed.

More recently, Ternus was the public face of the iPhone Air reveal, described internally as the most significant iPhone redesign since 2017. His willingness to appear on stage at major product events unusual for a hardware engineering chief signalled that Apple's board had been watching him as a potential public leader for some time.

Cook leaves, having built Apple into one of the most valuable companies on earth. He will stay on as executive chairman, a structure that mirrors the Jobs-to-Cook transition in its intent if not its circumstances. The challenge Ternus inherits is sharper: rivals are deploying AI at the hardware level in ways that are beginning to erode Apple's lock on the premium consumer market.