Y Combinator · S23
Y Combinator Summer 2023 startups
RemJobs lists 178 startups from Y Combinator's Summer 2023 batch. 131 of the 178 startups are based in the United States, and 77 in San Francisco. Between them they are in 17 countries and 38 cities. 12 are hiring remotely.
Updated
- startups
- 178
- countries
- 17
- cities
- 38
- hiring remotely
- 12
Summer 2023 startups
- Feanix BiotechnologiesYC S23Feanix is a trailblazing force in the trillion-dollar animal breeding industry. Feanix leverages proprietary genetic testing advancements to provide genetics and breeding as a… Scotts Valley, United States Remote: United States
- Electric AirYC S23Electric Air is a tech-enabled contractor for heat pump installations that cuts costs by 60%. Heat pumps are the most efficient way to heat American homes with a $53B annual… Redwood City, United States Remote: Latin America, North America +2
- SolaYC S23Sola is copilot for workflow automation. We help automation-minded teams build robust robotic agents to handle tedious tasks via LLMs and computer vision, smoothly integrated into… Williamsburg, United States Remote: United States
- StradaYC S23Automate servicing, claims and sales operations with enterprise-grade agentic AI built for insurance. Toronto, Canada Remote: United States
- Andromeda SurgicalYC S23Empowering surgeons with autonomous precision South San Francisco, United States
- CampfireYC S23Campfire is the modern accounting platform for startups and mid-size tech companies. The fastest growing YC companies such as Replit, Posthog, SpeakAI run on Campfire. Our product… San Francisco, United States
Members only
172 more S23 startups
Unlock the full list, every company on the map, and their founders, emails, LinkedIn and careers pages.
Where they are
23 more in other countries or with no known location
Hiring remotely
12 startups from S23 had at least one open remote role when their job boards were last read, 40 remote roles between them.
Other batches
Questions
How many startups are in Y Combinator's Summer 2023 batch?
RemJobs lists 178 startups from the Summer 2023 batch (S23) as of Oct 2, 2026, including Feanix Biotechnologies, Electric Air, Sola, Strada and Andromeda Surgical. The count covers the companies we have found, which may be fewer than the batch itself.
Where are Y Combinator Summer 2023 startups based?
131 of the 178 startups are based in the United States, and 77 in San Francisco. Between them they are in 17 countries and 38 cities. By country: United States (131), United Kingdom (8), Canada (5), Germany (4) and France (4).
Which S23 startups are hiring remotely?
12 startups had open remote roles when their job boards were last read, 40 remote roles between them, including Feanix Biotechnologies, Electric Air, Sola, Strada and Empirical Health.
Can I contact the founders of S23 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.