Tech Startups in San Mateo

About startups in San Mateo

San Mateo is home to 19 tech startups indexed on techstartupslist.com. This page lists every active San Mateo company we track, with logos, taglines, and direct links to each company's site — no paywalled middleman. Notable San Mateo startups in the index include Alpaca, Armory, Byte Kitchen, Compose, and HyperDX. Each profile surfaces team size, founding year, category, and any open roles their careers page is publicly scrapable for. The San Mateo cohort leans toward Dev Tools, Healthcare, and AI / ML, reflecting how the local startup ecosystem is concentrated. Recurring tags across these companies: B2B, SaaS, Developer Tools, AI, Fintech. The directory's filter UI accepts any of them as a query. Y Combinator batches represented in San Mateo: W19, W16, S11, and W21, among others. Jump to the per-batch landing pages for batch-specific cohort views. 1 is currently flagged as trending; the listing refreshes whenever the scrape runs so this stays current as San Mateo companies launch, raise, and ship. For roles open at these companies, see /jobs/location/san-mateo — every apply link goes to the company's own site, not an aggregator.