Güimar Vaca Sittic is a Venture Partner at FJ Labs, a New York-based startup studio and venture fund. See portfolio, sector focus and contact routes.
Güimar Vaca Sittic is a Venture Partner at FJ Labs, a New York-based startup studio and venture fund, where he leverages his background as an Argentinian entrepreneur who co-founded online marketplaces like Instacarro and Merlin Jobs [1][2][3]. His investment thesis targets early-stage companies, primarily in US and international marketplaces, e-commerce, social networks, fintech, SaaS, consumer technology, and proptech [1][2][8]. He typically invests check sizes ranging from $220,000 to $1.3 million with a sweet spot around $750,000, often acting as an angel investor alongside his firm role [4][8]. Notable portfolio companies include the acquired Merlin Jobs (acquired by Commure Health), Instacarro, Cenaplus (acquired by Restoring), and recent investments in Lara AI and Den [3][6][8]. Sittic led over 150 investments for FJ Labs since 2013 and has made more than 70 angel investments across his career [3][4][8]. A distinctive point of view is his focus on building and investing in international online marketplaces, which he discussed in a podcast episode detailing his entrepreneurial and investing journey [2].
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