Y Combinator · S19
Y Combinator Summer 2019 startups
RemJobs lists 102 startups from Y Combinator's Summer 2019 batch. 67 of the 102 startups are based in the United States, and 26 in San Francisco. Between them they are in 19 countries and 42 cities. 12 are hiring remotely.
Updated
- startups
- 102
- countries
- 19
- cities
- 42
- hiring remotely
- 12
Summer 2019 startups
- TRM LabsYC S19TRM is on a mission to build a safer world for billions of people. AI is extending the capability gap between attackers and defenders. The fundamental unit of scale has shifted… San Francisco, United States Remote: Asia-Pacific, Europe +33
- CoLab SoftwareYC S19Run AI-powered design reviews, capture expert feedback, and turn engineering knowledge into faster decisions. East Meadows, Canada Remote: Europe, North America +2
- ProlificYC S19Prolific helps dedicated research teams to collect the very highest-quality human-powered data - at scale - using our simple-to-use platform to target and manage participants from… London, United Kingdom Remote: United Kingdom, Mexico +1
- RecidivizYC S19Recidiviz is a non-profit technology company that drives meaningful changes in criminal justice systems and improved outcomes for justice-impacted individuals. Criminal justice… New York City, United States Remote: United States
- Pair TeamYC S19Pair Team is building a new kind of healthcare system across Medicaid, Medicare, and public assistance programs: one that recognizes that access to housing, nutritious food, and… San Francisco, United States Remote: United States
- FreshpaintYC S19Our customers use Freshpaint to make their websites and entire marketing stack HIPAA compliant. It's impossible to use modern analytics and marketing tools without sharing… San Francisco, United States Remote: United States
Members only
96 more S19 startups
Unlock the full list, every company on the map, and their founders, emails, LinkedIn and careers pages.
Where they are
15 more in other countries or with no known location
Hiring remotely
12 startups from S19 had at least one open remote role when their job boards were last read, 200 remote roles between them.
Other batches
Questions
How many startups are in Y Combinator's Summer 2019 batch?
RemJobs lists 102 startups from the Summer 2019 batch (S19) as of Oct 2, 2026, including TRM Labs, CoLab Software, Prolific, Recidiviz and Pair Team. The count covers the companies we have found, which may be fewer than the batch itself.
Where are Y Combinator Summer 2019 startups based?
67 of the 102 startups are based in the United States, and 26 in San Francisco. Between them they are in 19 countries and 42 cities. By country: United States (67), Canada (5), India (5), Argentina (2) and Brazil (2).
Which S19 startups are hiring remotely?
12 startups had open remote roles when their job boards were last read, 200 remote roles between them, including TRM Labs, CoLab Software, Prolific, Recidiviz and Pair Team.
Can I contact the founders of S19 startups?
Each company has a free public profile. 17 of them have founder names on file, and members see the founders, their emails where found, LinkedIn and careers pages, and every company on the map.
Companies come from public sources: their own websites, public startup directories and accelerator portfolios, and their public job boards (Greenhouse, Lever, Ashby), which were last read through Oct 2, 2026. A company that is missing or out of date can write to us from the footer.