John Ternus, the Cautious Engineer Now Telling Apple to Move Faster

John Ternus

Photo: Tessa Bury / CC BY 4.0, via Wikimedia Commons

Born	May 19, 1975 California
Occupation	Business Executive

The man who now runs Apple once tried to build a virtual-reality headset at a small startup, and the experience left him wary of the idea. Years later, when Apple poured money into the device that became Vision Pro, John Ternus, then its hardware chief, was among the doubters, according to Bloomberg’s Mark Gurman, who wrote that whenever the company swung at a big new category, Ternus “has often been in the conservative camp.” That is the puzzle at the centre of his tenure. Apple’s most careful engineer is now the executive telling it to ship more products, more often, with fewer people standing between the engineers and the decisions.

The instinct is an engineer’s, and it goes back a long way. Ternus, a Californian, studied mechanical engineering at the University of Pennsylvania, where he swam on the men’s team. His senior project already had the shape of his later work: a mechanical feeding arm that a person with quadriplegia could operate with movements of the head. It was a machine judged on one criterion, whether someone could actually use it.

After graduating in 1997, Ternus, who was born in May 1975, took his first job at Virtual Research Systems, designing head-mounted displays in the first, short-lived virtual-reality boom. He left in 2001, at 26, to join Apple’s product design team, a few years after Steve Jobs had come back to rescue the company. The first product he worked on was a monitor, the Apple Cinema Display. For the next two decades almost everything he did at Apple was invisible to the public and visible in every product box.

The climb was steady rather than spectacular. In 2013 he became vice president of hardware engineering under Dan Riccio, with the Mac, the iPad and the AirPods in his portfolio. In 2020 he took over iPhone hardware as well, the product that brings in most of Apple’s revenue, and he ran the engineering side of the move that took the Mac off Intel processors and onto chips Apple designs itself. When Riccio stepped aside in 2021, Ternus replaced him as senior vice president, and the Apple Watch was added to his remit the following year. Bloomberg described him then as the youngest member of the executive team, charismatic and well liked. Apple’s own account of his work stresses less glamorous things: durability, materials, reliability and making devices easier to repair.

By then he was the name analysts put forward as Tim Cook’s likely successor, and the signals kept piling up. In January 2026 Apple gave him oversight of its industrial design team, a move Bloomberg read as one more step toward the top job. In March he stood on a stage in New York to unveil the MacBook Neo, a $599 laptop built around an iPhone-class A18 Pro chip and aimed squarely at Chromebooks, the cheapest new Mac the company had ever sold. On April 20 Apple made it official. “Few people understand what it takes to build products that change the world the way John does,” Cook said.

The critical reading of Ternus starts with the same caution that made him trusted. Gurman’s reporting has him sceptical of Vision Pro from the start, drawing on what he had learned building a head-worn display decades earlier, and the headset’s weak sales made that scepticism look prescient. As chief executive he now defends it in public. In a September interview with the French programme Clique he called it “the early days of a long journey” and pointed to surgeons who use it in the operating room. The larger tension lies elsewhere. Apple’s weakest front is not a device but artificial intelligence, and the rebuilt Siri he inherits leans on a licensing deal with Google’s Gemini that was struck before he took charge and has been reported at around a billion dollars a year. A company that wants to win on software is now led by a man who spent his whole career on hardware, and his first big answer was a hinge.

That answer arrived quickly. Ternus became chief executive and joined the board on September 1, with Cook moving to executive chairman. Eight days later he headlined his first keynote and unveiled the iPhone Duo, Apple’s first foldable phone, with a 7.6-inch inner screen, a titanium frame and a starting price of $1,999, alongside the iPhone 18 Pro, the Apple Watch Series 12 and AirPods 5. He pitched the iPhone as a personal hub for intelligence across a user’s devices, which is another way of saying that Apple intends to fight the AI war on hardware it controls.

Inside the company the shift is sharper. At the end of September, Bloomberg reported that Ternus wants a leaner Apple with a heavier focus on engineering. A number of engineering program managers in the hardware division were let go over two weeks, roughly half a dozen directors were affected, and Ternus showed staff a slide charting annual headcount growth to argue that Apple should do more with fewer people. He also wants more products released more often, loosening the spring and autumn rhythm that has governed Apple launches for years, and more revenue from services.

Outside work, the picture that emerges is of an engineer who likes machines that move fast. He is a keen cyclist, races his Porsche at circuits such as Laguna Seca in California and has taken colleagues off-road rally driving in Washington state. He is married with children. A piece of advice he has given in public sums up the management style Apple is about to test at scale: “Always assume you’re as smart as anyone else in the room, but never assume that you know as much as they do.”

The first verdict on that style arrives in stores. Pre-orders for the iPhone Duo open on October 16 and the phone goes on sale on October 23, the first product that will be judged as a Ternus launch rather than a Cook one. The Gemini-powered Siri, the thinner management layers and the faster calendar will take longer to read. For an executive who built his reputation by asking whether a product was ready, the question now runs the other way: whether Apple is ready for the pace he has set.

Tags: Apple, business, ceos, Tim Cook, John Ternus, iPhone Duo, Vision Pro