Famous 20th Century Computer Engineers

John McAfee is an English-American businessman and computer programmer. He is credited with founding one of the most popular software companies of all time, McAfee Associates, which specializes in producing enterprise security software. After leaving the company, which is now owned by TPG Capital and Intel, John McAfee went on to found other companies like Tribal Voice and Future Tense Central.

Jan Koum is a Ukrainian American computer programmer and entrepreneur. He is credited with co-founding the popular cross-platform messaging service, WhatsApp. One of the most popular billionaires around the world, Koum donated almost $556 million to the donor-advised community foundation, Silicon Valley Community Foundation, in 2014.

Computer programmer and free-software activist Richard Stallman established the Free Software Foundation. The Harvard and MIT alumnus led the free GNU project, aimed at creating a UNIX-like operating system. He was later dragged into a controversy when he dismissed a sexual assault victim’s allegation against Jeffrey Epstein.

David Baszucki is a Canadian-born American entrepreneur and inventor. He is credited with co-founding the Roblox Corporation, for which he also serves as the CEO. He is also credited with co-founding Knowledge Revolution, a company which was obtained by MSC Software in 1998. In 2017 and 2018, Baszucki was named one of the 100 Most Intriguing Entrepreneurs by Goldman Sachs.

Computer-game developer John Carmack introduced pioneering innovations in the 3-D game arena. He specializes in first-person shooter games, such as Quake and Doom. The id Software founder had spent a year in a juvenile home and had later dropped out of university to become a freelance programmer.

Credited with coining the term software engineering, computer scientist and systems engineer, Margaret Heafield Hamilton served as the Director of the Software Engineering Division of the MIT Instrumentation Laboratory, overseeing the development of the on-board flight software for NASA's Apollo program.  A prolific writer, she is also the founder of two software companies; Higher Order Software and Hamilton Technologies.

Chinese business magnate Ma Huateng, or Pony Ma, is best known as the founder, chairman, and CEO of the technology giant Tencent. His company owns the messaging app WeChat. One of CEOWORLD’s Most Powerful People in the World, he was a delegate of the 12th National People's Congress.

Shiva Ayyadurai is an Indian-American engineer, scientist, and entrepreneur. He gained recognition after claiming to be the inventor of email, which is widely disputed even today. His claim is based on a software called EMAIL, which he wrote while studying at Livingston High School in the late-1970s. He is also known for his unfounded medical claims, including treatments for COVID-19.

Tech magnate Garrett Camp made headlines in 2020 when he quit his position of board director of Uber, a company co-founded by him, to focus on its product strategy. Camp has also formed companies such as StumbleUpon and the start-up incubator Expa Labs, and is part of The Giving Pledge.

Game designer Sid Meier soared to fame with the strategy game series Civilization. Initially a cash-register designer, he later co-founded the gaming company MicroProse. He met his wife at a Lutheran Church, where they both still sing. Apart from the AIAS Hall of Fame Award, he has also penned a memoir.

Marc Andreessen is an American entrepreneur, software engineer, and investor. He is credited with co-founding the independent computer services company Netscape as well as the private venture capital firm Andreessen Horowitz. Marc Andreessen is also credited with co-authoring one of the first web browsers, NCSA Mosaic. In 1994, he was inducted into the World Wide Web Hall of Fame.

Known online as Geohot, George Francis Hotz is an American security hacker and software engineer, who at the age of seventeen became the first person to hack Apple’s iPhone. Later, he developed iOS jailbreaks and became the first person to crack a defense system in Sony PlayStation 3. Currently, he is working at comma.ai, a startup he founded in 2015.

A pioneering computer scientist from the Netherlands, Edsger W. Dijkstra had initially studied theoretical physics, before focusing on computers. He developed the domain of structured programming and also won honors such as the Turing Award. He died at 72, after a long struggle with cancer.

Peter Molyneux is an English programmer and video game designer. He is credited with creating several popular video games like Populous, Dungeon Keeper, Theme Park, Godus, and the Fable series. In 2004, he was inducted into the AIAS Hall of Fame. In 2011, Peter Molyneux was honored at the Game Developers Choice Awards with the Lifetime Achievement Award.

Computer programmer and entrepreneur Shawn Fanning revolutionized the world of information technology by developing a program that let users share MP3 copies of music from their personal computers with others on the internet. His invention led to the formation of Napster and got him featured on the cover of Time.

Jonathan Ive is a British-American product, industrial, and architectural designer. The former Chief Design Officer (CDO) of Apple Inc., Ive played a major role in the designs of several Apple products, such as the iPhone, MacBook, iMac, iPad, and iPod. He also played an important role in the designs of Apple's architectural projects, such as Apple Stores and Apple Park.

Daniel Fredinburg was an American climate activist, Google executive, explorer, inventor, and entrepreneur. He was credited with co-inventing over 12 software technologies that were recognized and patented by Google. Daniel Fredinburg also served as the head of privacy at Google X before his untimely and tragic death caused by head injuries during an avalanche, at the age of 33.

Best known as Cutler from the series Being Human, Andrew Gower also impressed his fans with his performance as “Bonnie Prince” Charles Edward Stuart in Outlander. A prominent stage actor, too, he has been part of many Oxford School of Drama productions. He has also experimented with a music career.

Kai-Fu Lee is a computer scientist, writer, and businessman. One of the Chinese internet sector's most important figures, Lee is credited with creating a website called Wǒxuéwǎng, which aims at helping young people achieve in their respective careers. Also popular on social media, Lee is one of China's most-followed micro-bloggers; he has more than 50 million followers on Sina Weibo.

Best known as the co-designer of the Go programming language, computer programmer Rob Pike has had an illustrious stint with the Bell Labs and now works with Google. He was also part of the Unix development team and has co-written books such as The Practice of Programming.

Canadian game designer Patrice Désilets is best known for his Assassin's Creed game series. He also contributed to the creative direction of Prince of Persia: The Sands of Time and Hype: The Time Quest. After leaving Ubisoft, he formed his own studio, the Montreal-based Panache Digital Games.

Best known as the developer of Transport Tycoon and the RollerCoaster Tycoon franchise, Scottish programmer and video game developer Chris Sawyer is one of the gaming world’s greatest stars and had begun developing games in school. He included inputs from his own hobby of riding rollercoasters in the RollerCoaster Tycoon series.