The Vanished Genius CTO: Lee Holloway, Part 1 (Urabe)

Masakazu Urabe's August 2025 piece on note.com is the first half of a two-part biography of lee-holloway, the third co-founder of Cloudflare. It is a compilation, not original reporting: the sources it lists are Sandra Upson's 2020 Wired feature, a post by the Association for Frontotemporal Degeneration (AFTD), TechCrunch's 2019 IPO coverage, Longreads and the Cloudflare blog. The English text reads as a translation from Japanese, so its quotations (Prince's recollections, the IPO prospectus) are probably re-translated and should not be taken as verbatim. Part 1 covers the life and the illness. The technical work is promised for Part 2, which is not in the vault. lee-holloway-biography-part-1

Career

Holloway grew up in Cupertino, where his father worked at Apple. After high school he worked as an engineer at the dot-com startup HomeWarehouse.com, then studied computer science at UC Santa Cruz. A professor there, Arthur Keller, introduced him to Matthew Prince, who was working on anti-spam software and had noticed a similar project in Holloway's lab. Prince hired him on the spot into Unspam Technologies, founded in Park City, Utah in 2004. Holloway lived in Prince's basement, working for food and housing instead of a salary, and became the company's chief software architect. A side project from those years, Project Honey Pot, a community effort that collects data on spammers and web abusers, still runs.

Cloudflare came out of that data. At Harvard Business School, Prince and his classmate Michelle Zatlyn worked out a plan to use what Project Honey Pot gathered to block threats instead of only watching them. Prince pitched it to Holloway just as other companies were making him offers, and the three founded the company in 2009. Holloway built the first prototype and spent the days before the 2010 TechCrunch Disrupt launch fixing bugs so the demo would hold. He went on to lead engineering and hire the early team.

The article credits him with Cloudflare's anycast network and its "Cell" architecture but leaves the substance for Part 2, so on this page those remain the author's attribution. The one concrete engineering episode it gives is the 2014 launch of free TLS for every Cloudflare customer, which Holloway is said to have written in one overnight session before the deadline, headphones on and talking to nobody. The article repeats the report that the amount of encrypted web traffic doubled overnight as a result.

An illness read as character

What stands out in Part 1 is how long the disease went unrecognized, because it did not look like a disease. From about 2011, around age 30, Holloway was constantly exhausted, stopped turning up to colleagues' invitations, and stopped engaging with his young son. His first marriage ended in 2012, and colleagues put the change down to success and money having made him selfish. In January 2015 he had heart surgery for aortic valve regurgitation, which doctors thought might explain his headaches. The surgery went well, but afterwards he was listless at work, played phone games in meetings, ignored people and stubbornly opposed his colleagues' suggestions. Prince and Zatlyn held repeated meetings asking him to improve. He left the company in 2016, and the article describes him standing by with a smirk and a beer while Prince gave a tearful farewell speech at the all-hands.

The explanations people tried along the way were burnout, depression and aftereffects of the surgery. In March 2017 an MRI showed brain atrophy far beyond his age, and the UCSF Memory and Aging Center diagnosed behavioral variant frontotemporal dementia (bvFTD). Unlike Alzheimer's, it shows first as changes in personality and behavior, not memory loss; it usually begins in a person's fifties or sixties; and it has no cure. His speech decayed through 2018 into repeated fragments of his own life ("met at Cloudflare", "engaged in Rome") and then strings of letters and numbers. By 2019 conversation was gone.

The article does not draw a lesson, but its sequence makes one plain. For six years every symptom was the kind of thing a colleague, a co-founder or a spouse reads as a choice, and it was met with counseling, performance conversations and an exit.

Recognition

Cloudflare's 2019 IPO prospectus credited Holloway as the co-founder who designed the platform and led the early technical team, and the internal codename for the IPO work was Project Holloway. TechCrunch covered the filing under the headline "Cloudflare has a third co-founder". Wired's 2020 feature, "The Devastating Decline of a Brilliant Young Coder", took the story to readers outside the industry and raised awareness of FTD itself. His wife Kristin and his parents set up the Holloway Fund within the AFTD in 2019, splitting donations evenly between patient and family support and research, and an annual research meeting, the Holloway Summit, has run since 2020.

Caveats

The article is inconsistent on age: it estimates his birth year as 1981, yet says he left Cloudflare at 36 in 2016 and was diagnosed at 36 in 2017. Its figures on Cloudflare's scale (over 10% of all internet requests) have no source attached. Anything technical beyond the prototype and the TLS launch waits on Part 2.

The vault has no Cloudflare page yet. meerkat-introduction covers a much later piece of Cloudflare's infrastructure, a global consensus service built on QuePaxa to replace Raft.