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Despite being one of Apple’s most important leaders for more than two decades, John Ternus has remained largely unknown to the public. Tim Cook will officially step down as CEO on September 1, closing one of the company’s most rapid growth phases in its history. Ternus will assume the role as Cook steps down, having been with Apple for more than two decades.
Ternus joined Apple in 2001 as a mechanical design engineer and has since risen to Senior Vice President of Hardware Engineering. In that role, he directly oversees hardware development for Apple’s flagship products, including iPhone, iPad, Mac, and AirPods.
While many tech executives are frequently in the media, Ternus has largely operated behind the scenes. His influence is described as spanning much of Apple’s current product ecosystem, including a key role in the company’s shift toward in-house designed chips—an approach that provides Apple deeper control over hardware and aims for optimized performance.
Anecdotes about Ternus’s approach have circulated from his 2024 commencement speech at the University of Pennsylvania. While working on Apple’s first product, the Cinema Display, he described arguing with a supplier over the number of screw-thread grooves on the back of the device. The supplier proposed 35 grooves, but Ternus insisted on 25, aligning with Apple’s preference.
“I clearly remember stepping back for a moment and asking myself: ‘What am I doing here? Is this normal?’ And I thought about it, and realized it may not be normal, but it was right,” he said.
He added that the decision reflected a commitment to thorough review and effort, noting that the customer may notice or may not, but that the team should have reviewed everything. The remarks were framed as consistent with an Apple mindset associated with Steve Jobs: a pursuit of perfection even when no one is watching.
After graduating from the University of Pennsylvania, Ternus joined Virtual Research Systems as a mechanical engineer. The company, though less well known today, was part of an early wave of virtual reality in the 1980s and 1990s, working on VR headsets and immersive interfaces. The experience is described as exposing him to advanced display technology and human–machine interfaces, later relevant to work on products such as Apple Vision Pro.
The transition comes as Apple’s leadership era under Tim Cook is described as substantial. When Cook took over in 2011, he faced skepticism about whether Apple could sustain success. During his tenure, Apple became a company with a market value around $4 trillion, expanding into wearables and digital services.
At the same time, the later stage of Cook’s tenure raised questions about what the next major breakthrough product could be after the iPhone and the need for Apple to accelerate in the artificial intelligence race.
Selecting a leader with an engineering background like Ternus is seen as a signal that Apple may place greater emphasis on product innovation in the coming period. Some analysts believe his technical foundation could help Apple explore new directions as technology evolves rapidly.
However, the challenge is described as significant: Ternus must succeed a CEO who elevated Apple to a peak market value and also meet expectations to identify the next driver of growth.
In his remarks, Ternus said he is “optimistic” about the future and views leading Apple as a major responsibility. Having worked with Steve Jobs and Tim Cook for many years, he said he believes he understands the values that have shaped Apple and will continue to develop them in the next phase.
The transition is therefore presented as both a leadership change and a shift toward a new generation of leadership at Apple, with those who have long worked behind the product moving to the center as the company seeks its next chapter.
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