John Giannandrea
About John Giannandrea
John Giannandrea is a British software engineer and technology executive. He co-founded Metaweb and was co-founder and CTO of the speech recognition company Tellme Networks. He was also chief technologist of the web browser group at Netscape and a senior engineer at General Magic.
He joined Google in 2010 and became its chief of search and artificial intelligence. In 2018 he moved to Apple as senior vice president of machine learning and AI strategy, reporting to CEO Tim Cook. Press reported in March 2025 that he had been removed from running Siri development. In December 2025 Apple announced he would retire in early 2026.
Giannandrea's angel activity is mostly visible through company announcements and data aggregators. Crunchbase lists him as an individual investor, with recent entries for Factify (January 2026) and Archimetis (February 2026). It also lists him in Forward's Series E, with no year given in the source we found.
He has not published a fund, a check size or a statement of investing criteria that we could find.
In July 2026, Cheiron announced an $8M seed round led by Menlo Ventures, with Menlo partner Venky Ganesan joining the board. Giannandrea is one of the strategic angels in the round, described in the announcements as former Apple AI chief. The others are Moderna co-founder Robert Langer, former Pfizer CMO Freda Lewis-Hall, Chai Discovery CEO Josh Meier and former Starbucks CEO Laxman Narasimhan.
Cheiron is a Los Altos, California company building an AI-native operating system for drug development programs. Its Life Sciences Knowledge Graph connects biomedical, clinical, regulatory and patent data.
The public record is thin. The one AI round we can confirm, Cheiron, is a seed-stage company applying AI to biopharma software. His other listed investments are in separate sectors, and Crunchbase does not give details on them. Check size, preferred stage and geography are not public.
- Cheiron: AI-native operating system for drug development programs; $8M seed led by Menlo Ventures, announced July 2026.
- Factify: listed on Crunchbase as a January 2026 round with Giannandrea as an investor.
- Archimetis: listed on Crunchbase as a February 2026 round with Giannandrea as an investor.
- Forward: Crunchbase lists him as an investor in its Series E; year not confirmed.
- en.wikipedia.org/wiki/John_Giannandrea
- macstories.net/news/john-giannandrea-former-google-executive-is-apples
- thepharmaletter.com/ones-to-watch/cheiron
- finsmes.com/2026/07/cheiron-raises-8m-in-seed-funding.html
- hitconsultant.net/2026/07/22/cheiron-raises-8m-seed-menlo-ventures-dru
- tamradar.com/funding-rounds/cheiron-seed-8m
- crunchbase.com/person/john-giannandrea/person_overview_investor/timeli
- crunchbase.com/funding_round/goforward-series-e--ce22187e
Investing activity
John Giannandrea appears in 1 AI deal tracked by the Lounge deals desk. The rounds are mostly Seed, with a median round size of $8M. The most recent is Cheiron (Seed, $8M, Jul 2026).
John Giannandrea most often invests alongside Menlo Ventures, Robert Langer, Josh Meier and Laxman Narasimhan, and the companies they back on Lounge are mostly in AI.
Deals
Frequently asked questions about John Giannandrea
Who is John Giannandrea?
He is a British software engineer and executive who co-founded Metaweb and Tellme Networks. He led Google Search and AI, then served as Apple's senior vice president of machine learning and AI strategy until retiring in early 2026.
Has John Giannandrea invested in AI startups?
Yes. He was a strategic angel in Cheiron's $8M seed round, announced in July 2026 and led by Menlo Ventures. Cheiron builds AI software for drug development programs.
What check size does John Giannandrea write?
His check size is not public. No source we found gives his typical amount for Cheiron or any other company.
What stage does John Giannandrea invest in?
The confirmed AI investment is a seed round. He has not published a stated stage preference.
Does John Giannandrea invest in life sciences AI?
Cheiron, which applies AI to drug development, is the AI deal we can confirm. Founders in AI for biopharma have a documented point of contact with him through that round.
How can founders reach John Giannandrea?
We could not verify an official personal site or social profile. A warm introduction through a shared investor or advisor is the more practical route, for example someone connected to a company he has backed.
Is John Giannandrea an angel investor?
Yes. John Giannandrea invests personally as an angel.
What AI companies has John Giannandrea invested in?
John Giannandrea's AI investments include Cheiron. The 1 round on Lounge are listed on this page with amounts, dates and co-investors.
What stage does John Giannandrea invest at?
In the rounds tracked on Lounge, John Giannandrea has invested at Seed, with a median round of $8M.
Who does John Giannandrea co-invest with?
John Giannandrea's most frequent co-investors on Lounge are Menlo Ventures (1 deal), Robert Langer (1 deal), Josh Meier (1 deal), Laxman Narasimhan (1 deal) and Freda Lewis-Hall (1 deal).