Umur Cubukcu, Angel Investor

Umur Cubukcu is a seasoned entrepreneur and investor, best known as co‑founder of Citus Data, where he served as CEO until its acquisition by Microsoft. At Microsoft, he led PostgreSQL and Hyperscale (Citus) at Azure, scaling distributed database technology for global enterprise adoption. In 2023, Cubukcu co‑founded Ubicloud, a San Francisco‑based company focused on building open cloud infrastructure. He previously served as a Visiting Group Partner at Y Combinator, mentoring early‑stage founders and sharing his expertise in scaling software businesses. His career began in business development at TrueDemand Software. Cubukcu has made 7 investments, backing startups across software, AI, and emerging technologies. Notable deals include Pipeshift ($2.5M Seed, 2025), DryMerge ($2.2M Seed, 2024), Kavaken ($403K Seed, 2023), HoustonBionics ($400K Pre‑Seed, 2021), Sporzy ($141K Convertible Note, 2020), Mall IQ ($1.1M Seed, 2019), and TeamSQL (Seed, 2017).