Rubén Domínguez Ibar
About Rubén Domínguez Ibar
Rubén Domínguez Ibar is an industrial engineer who studied at Universidad Pontificia Comillas ICAI-ICADE. His LinkedIn profile describes him as a tech early-stage investor and the builder of a media company. He is based in the United States.
His earlier career was in venture capital. Public bios list him as a VC investor at Mundi Ventures, which he describes as a global fund managing €500M that invests in early-stage startups. His listed experience also includes Itnig and Ladorian.
He founded The VC Corner, a newsletter on startups and venture capital. He says it has 65,000 subscribers and ranks among the top 15 tech newsletters on Substack. He has also mentioned related projects: The Founders Corner, The Dealflow Corner and The AI Corner.
His LinkedIn experience lists angel investing from January 2025, based in the San Francisco Bay Area. He describes it as investing globally at pre-seed and helping founders with distribution and visibility. Investor directory AskForFunding describes him as a scout for Andreessen Horowitz who helps pre-seed startups reach the a16z Speedrun accelerator. His LinkedIn also shows him connected to people at Andreessen Horowitz.
On the Lounge deals desk he appears in two AI rounds. One is QuiverAI's $8.3M seed in February 2026. Crunchbase lists him among the investors, with Andreessen Horowitz as lead. QuiverAI works on AI-generated vector graphics. The other is the $1.5M pre-seed of Charms Interactive, Inc. in May 2026. The company's press release names him among the angels and describes him as an a16z Scout and founder of The VC Corner.
AskForFunding also lists MITO AI ($4.5M pre-seed) and InfiniteWatch ($4M pre-seed). I could not confirm these two rounds against a primary source.
By his own description he invests globally at pre-seed as a business angel. The deals above also include a seed round. AskForFunding lists his industries as artificial intelligence and technology, web and apps. His portfolio covers AI, consumer technology and security platforms. He has not published a check size, and none is stated here.
- QuiverAI: AI lab and product company focused on vector graphics; $8.3M seed, February 2026, led by Andreessen Horowitz.
- Charms Interactive, Inc.: platform for AI characters with memory, ownership and an economy; $1.5M pre-seed, May 2026.
- Throxy (YC X25): vertical AI agents that automate the sales funnel; listed in his angel experience since 2025.
- Cubic (YC X25): AI code review platform; listed in his angel experience since 2025.
- Bloom (YC X25): lets users build and share mobile apps; listed in his angel experience since 2025.
- Murphy: AI-powered debt collection; listed in his angel experience since 2025.
- linkedin.com/in/rubendominguezibar
- crunchbase.com/funding_round/quiverai-seed--cc5c36eb
- eweek.com/press-release/charms-closes-1-5m-pre-seed-to-launch-the-ai-c
- muckrack.com/ruben-dominguez-ibar-1/bio
- stackforce.co/talent/rubn-domnguez-ibar-co-founder-691e2ee33d0f5483ff8
- askforfunding.com/investor/rubn-domnguez-ibar-angel-investor
- substack.com/@rubendominguez/note/c-79918224
Investing activity
Rubén Domínguez Ibar appears in 2 AI deals tracked by the Lounge deals desk. The rounds are mostly Pre-seed and Seed, with a median round size of $8M. The most recent are Charms Interactive, Inc. (Pre-seed, $1.5M, May 2026) and QuiverAI (Seed, $8.3M, Feb 2026).
Rubén Domínguez Ibar most often invests alongside JME Ventures, Gidorah, Lattice Fund and Ari Mannan, and the companies they back on Lounge are mostly in AI.
Deals
Frequently asked questions about Rubén Domínguez Ibar
Does Rubén Domínguez Ibar invest in AI startups?
Yes. He took part in QuiverAI's $8.3M seed round (February 2026) and the $1.5M pre-seed of Charms Interactive, Inc. (May 2026). His listed angel portfolio also includes AI companies such as Throxy and Cubic.
What stage does Rubén Domínguez Ibar invest at?
He says he invests globally at pre-seed as a business angel. His QuiverAI investment was in a seed round.
What is Rubén Domínguez Ibar's check size?
No check size is public, so none is stated here.
Who is Rubén Domínguez Ibar?
He is an industrial engineer and former VC investor at Mundi Ventures. He founded The VC Corner newsletter and is an angel investor and a16z scout based in the United States.
What help does Rubén Domínguez Ibar offer founders beyond capital?
He says he helps founders with distribution, visibility and go-to-market. He also has a large audience through The VC Corner and LinkedIn, where he reports 318K followers.
How can founders contact Rubén Domínguez Ibar?
His public channels are LinkedIn and The VC Corner on Substack. Founders should check his profile for how he prefers to be approached.
Is Rubén Domínguez Ibar an angel investor?
Yes. Rubén Domínguez Ibar invests personally as an angel.
What AI companies has Rubén Domínguez Ibar invested in?
Rubén Domínguez Ibar's AI investments include Charms Interactive, Inc. and QuiverAI. The 2 rounds on Lounge are listed on this page with amounts, dates and co-investors.
Who does Rubén Domínguez Ibar co-invest with?
Rubén Domínguez Ibar's most frequent co-investors on Lounge are JME Ventures (2 deals), Gidorah (1 deal), Lattice Fund (1 deal), Ari Mannan (1 deal) and Selo (1 deal).
How can founders reach Rubén Domínguez Ibar?
Founders on Lounge can see Rubén Domínguez Ibar'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 Rubén Domínguez Ibar to their Investor Pipeline to track the conversation.