Meticulous
London-based company whose automated testing platform checks every code change against simulated user sessions before developers merge it.
- Industry
- developer tools, software testing
- Location
- London, United Kingdom
- Website
- https://www.meticulous.ai
- Founded
- 2021
About
Meticulous provides an automated testing platform that generates and maintains test flows across an application and shows developers a visual diff of what a code change would break before they merge it. Its release names Notion, ElevenLabs, Dropbox, Wiz and LaunchDarkly as customers. Tech Funding News reports that brothers Gabriel Spencer-Harper (CEO) and Quentin Spencer-Harper (CTO) founded it in 2021, that it is based in London, and that it has raised $19 million in total. Its October release is datelined San Francisco, and Chemistry says the team is just beginning to build out its US operations.
Funding history
| Round | Date | Amount | Lead |
|---|---|---|---|
| Series A 2026 | 2026-07-15 | $15M | Chemistry |
Investors
- Chemistry lead
- Menlo Ventures participant
- Lachy Groom participant
- Jason Warner participant
- Arash Ferdowsi participant
- Scott Belsky participant
- Guillermo Rauch participant
- Calvin French-Owen participant
- Caitlin Colgrove participant
- Jason Ginsberg participant
Sources
Last verified:
- https://www.chemistry.vc/post/why-we-invested-in-meticulous
Type: official investor website. Accessed 2026-10-09.
Chemistry post dated 2026-07-15 by Ethan Kurzweil. Says Chemistry is leading Meticulous' $15M Series A and names Gabe and Quentin as the founders. - https://techfundingnews.com/ai-writes-code-faster-than-developers-can-review-it-these-ex-dropbox-and-palantir-brothers-raised-15m-to-fix-that/
Type: reputable publication. Accessed 2026-10-09.
Tech Funding News article dated 2026-07-16. Reports that London-based Meticulous raised $15 million in a Series A led by Chemistry, with Menlo Ventures and angels Lachy Groom, Jason Warner, Arash Ferdowsi, Scott Belsky, Guillermo Rauch, Calvin French-Owen, Caitlin Colgrove and Jason Ginsberg. Source of the 2021 founding by brothers Gabriel and Quentin Spencer-Harper. - https://www.menlotimes.com/post/meticulous-raises-15m-to-accelerate-the-pace-of-software-development
Type: reputable publication. Accessed 2026-10-09.
Menlo Times article dated 2026-07-17. Reports $15M in Series A funding led by Chemistry for Meticulous, led by Gabriel Spencer-Harper and Quentin Spencer-Harper. - https://www.prnewswire.com/news-releases/meticulous-announces-15m-series-a-to-enable-every-developer-to-ship-at-the-speed-their-agents-code-302902609.html
Type: company announcement. Accessed 2026-10-09.
Meticulous release via PR Newswire, datelined San Francisco, Oct. 6, 2026, published 2026-10-08. Announces a $15m Series A led by Chemistry, with Menlo Ventures and angel investors Lachy Groom, Jason Warner, Arash Ferdowsi, Scott Belsky, Guillermo Rauch, Calvin French-Owen, Caitlin Colgrove and Jason Ginsberg, and names customers Notion, ElevenLabs, Dropbox, Wiz and LaunchDarkly. - https://www.finsmes.com/2026/10/meticulou-raises-15m-in-series-a-funding.html
Type: reputable publication. Accessed 2026-10-09.
FinSMEs article dated 2026-10-09 (its headline spells the name Meticulou). Gives the London, UK location, the $15M Series A led by Chemistry and the same participants, and names CEO Gabriel Spencer-Harper and CTO Quentin Spencer-Harper. - https://buttondown.com/raisetrack/archive/raise-track-update-2026-10-09/
Type: other verified public source. Accessed 2026-10-09.
Raise Track Update issue #111 for 2026-10-09, sent 2026-10-09 22:09 UTC (Buttondown archive). Source of the round label, amount and investor list used on this page.