Guillaume Luccisano
About Guillaume Luccisano
Guillaume Luccisano is a French engineer and three-time Y Combinator founder. He studied computer science at EPITECH. His career began as an early engineer at Justin.tv, which became Twitch. He co-founded Socialcam (YC W12), a mobile video app that Autodesk acquired for $60 million in 2012. He then co-founded Triplebyte (YC S15), a technical hiring platform, and served as its CTO until about 2021.
After Triplebyte he spent time in France and Singapore. In Singapore he was a visiting partner at the accelerator Iterative. In late 2022 he started Yuma AI (YC W23) and is its founder and CEO. Yuma builds AI agents that resolve customer conversations for ecommerce brands, mainly Shopify merchants. It works with helpdesks such as Gorgias, Zendesk and Kustomer.
Crunchbase lists his location as San Francisco. His personal site says he moved to Boston in 2024 to bridge Yuma's US and European operations. Yuma also has a team in Barcelona.
Public sources do not agree on the size of his portfolio. Crunchbase counts 12 investments and 12 portfolio companies, with no lead investments. Tracxn lists three. His personal site and a profile on YesPress both say he has made more than 90 angel investments, mostly in the United States and France.
Tracxn lists three seed rounds: Powder in March 2019, Purchasely in June 2021 and Remedial Health in September 2022. His personal site names Algolia, Airbyte and Gorgias as angel investments, and YesPress adds Yubo. A third-party investor directory also lists Konvu, Outset and Cryptr as recent investments. The profile does not give dates for these.
AskForFunding says he previously managed Y Combinator demo day funds at AngelList. That claim comes from a single directory profile and could not be confirmed elsewhere. Crunchbase records one exit as an investor or founder, Splitforce, a mobile A/B testing company.
His clearest AI activity is as an operator. Yuma launched in November 2022 using OpenAI's Davinci model, before ChatGPT was public. By his own account it was delivering AI agents to merchants at scale in 2023. His site says Yuma serves more than 100 brands, and that its best merchants automate 93% of customer interactions. YesPress reports a $5 million seed round for Yuma.
As an investor, directory profiles tag him with AI, fintech and SaaS. His portfolio includes developer and data infrastructure companies such as Airbyte and Algolia. The sources do not give dates or amounts for his early-stage AI deals, so none are listed here.
Most public sources describe him as a seed-stage angel. NFX Signal ranks him in SMB Software at both seed and pre-seed. Directories list AI, fintech, SaaS and enterprise applications as his sectors. Tracxn lists the United States and France as his main geographies, and he has been active in both countries.
He has not published a typical check size, and no source reviewed states one. He has not published a thesis on what he looks for in angel pitches. His founder background suggests he is closest to teams building software and developer or business tools. The sources do not state this directly, so treat it as an inference. He is also a Y Combinator alumnus, and several investments appear to be YC-related.
- Algolia: search and discovery API platform. Listed on his personal site as an angel investment, year not stated.
- Airbyte: data integration platform. Listed on his personal site, year not stated.
- Gorgias: ecommerce helpdesk. Listed on his personal site, year not stated. Yuma first launched on the Gorgias app store.
- Yubo: social app. Named in a YesPress profile, year not stated.
- Powder: seed round in March 2019, per Tracxn.
- Purchasely: in-app subscription and purchase platform, seed round in June 2021, per Tracxn.
- Remedial Health: pharmacy supply chain company, seed round in September 2022, per Tracxn.
- Konvu, Outset and Cryptr: listed as recent investments by AskForFunding, dates not stated.
- crunchbase.com/person/guillaume-luccisano
- guillaume-luccisano.com
- yuma.ai/about-us
- yespress.io/guillaume-luccisano
- yespress.io/yuma-ai-yc-w23
- tracxn.com/d/people/guillaume-luccisano/__FUmLuaH0b0oBOpGXIdfqKKpbciJH
- signal.nfx.com/investors/guillaume-luccisano
- askforfunding.com/investor/guillaume-luccisano-angel-investor
Investing activity
Guillaume Luccisano has made 12 investments according to Crunchbase across 12 portfolio companies, and has seen 1 exit and founded 3 companies.
Deals
Frequently asked questions about Guillaume Luccisano
Does Guillaume Luccisano invest in pre-seed and seed AI startups?
He is described as a seed-stage angel, and NFX Signal ranks him in SMB Software at pre-seed and seed. He has not published an AI-specific thesis. He runs Yuma AI, an AI company, and has invested across AI, SaaS and developer tools.
What check size does Guillaume Luccisano write?
No public source states his check size, so it is not listed here. Ask him directly or through a mutual connection.
How many startups has Guillaume Luccisano invested in?
Crunchbase counts 12 investments and Tracxn lists three. His own site and a YesPress profile say more than 90 angel investments, so the Crunchbase count is likely incomplete.
Which companies has Guillaume Luccisano founded?
He co-founded Socialcam, acquired by Autodesk for $60 million in 2012, and Triplebyte, and founded Yuma AI in 2022. Crunchbase also lists an exit in Splitforce. All three of the first companies went through Y Combinator.
Where is Guillaume Luccisano based?
Crunchbase lists San Francisco. His personal site says he moved to Boston in 2024 and previously lived in France, San Francisco and Singapore.
How can founders contact Guillaume Luccisano?
He is on X as @luckwi and on LinkedIn, and his personal site is guillaume-luccisano.com. A warm intro through a shared investor or Y Combinator contact is likely the best route.
Is Guillaume Luccisano an angel investor?
Yes. Guillaume Luccisano invests personally as an angel and is Founder and CEO at Yuma AI. Crunchbase counts 12 investments and 1 exit.
How can founders reach Guillaume Luccisano?
Founders on Lounge can see Guillaume Luccisano's contact details in AI Investor Contacts (paid plans), check for a warm introduction through members who worked with them under Warm Paths, and add Guillaume Luccisano to their Investor Pipeline to track the conversation.