Y Combinator · S11
Y Combinator Summer 2011 startups
RemJobs lists 13 startups from Y Combinator's Summer 2011 batch. 9 of the 13 startups are based in the United States, and 8 in San Francisco. Between them they are in 4 countries and 6 cities. 3 are hiring remotely.
Updated
- startups
- 13
- countries
- 4
- cities
- 6
- hiring remotely
- 3
Summer 2011 startups
- Apollo GraphQLYC S11Connect agents and apps to GraphQL and REST APIs with proven infrastructure trusted by enterprise leaders. San Francisco, United States Remote: Canada, United Kingdom +1
- HackerRankYC S11At HackerRank, our mission is to change the world to value skills over pedigree. Thousands of companies use our AI-powered platform to hire next-gen developers based on what they… Bengaluru, India Remote: Worldwide
- SiftYC S11Sift is the leader in Digital Trust & Safety, empowering digital disruptors to Fortune 500 companies to unlock new revenue without risk. Sift dynamically prevents fraud and abuse… San Francisco, United States Remote: United States
- GoCardlessYC S11Collect and send payments, minimise failures, and fight fraud. No more chasing payments and no expensive card fees. London, United Kingdom
- MixRankYC S11Bulk data feeds on companies, their employees, job postings, and the technologies they use. Toronto, Canada
- QuartzyYC S11The world’s No. 1 lab management platform. We help scientists easily organize orders, manage inventory, and save money. Hayward, United States
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7 more S11 startups
Unlock the full list, every company on the map, and their founders, emails, LinkedIn and careers pages.
Where they are
Hiring remotely
3 startups from S11 had at least one open remote role when their job boards were last read, 12 remote roles between them.
Other batches
Questions
How many startups are in Y Combinator's Summer 2011 batch?
RemJobs lists 13 startups from the Summer 2011 batch (S11) as of Oct 2, 2026, including Apollo GraphQL, HackerRank, Sift, GoCardless and MixRank. The count covers the companies we have found, which may be fewer than the batch itself.
Where are Y Combinator Summer 2011 startups based?
9 of the 13 startups are based in the United States, and 8 in San Francisco. Between them they are in 4 countries and 6 cities. By country: United States (9), Canada (2), United Kingdom (1) and India (1).
Which S11 startups are hiring remotely?
3 startups had open remote roles when their job boards were last read, 12 remote roles between them, including Apollo GraphQL, HackerRank and Sift.
Can I contact the founders of S11 startups?
Each company has a free public profile. 4 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.