Get an API keyGet an API keyThe 50 YC S21 companies with the most distinct open roles posted in the last 60 days.
Updated weekly, last on November 9, 2026. Roster from Y Combinator's public directory.
| # | Company | Team | 6 mo | 12 mo | Open roles | Total raised | Last round |
|---|---|---|---|---|---|---|---|
| 1 |  Online Training for Healthcare Jobs | 449 | +12% | +33% | 36 | $111M | Series C$55M, Jun 2026 |
| 2 |  Web search rebuilt for LLMs | 243 | +46% | +117% | 28 | $357M | Series C$250M, May 2026 |
| 3 |  The global financial platform for affluent consumers in the Americas. | 277 | +49% | +147% | 24 | ||
| 4 |  AI-enabled financial automation and intelligence for CPG Brands | 121 | +89% | +163% | 22 | $75M | Series B$55M, Sep 2026 |
| 5 |  Robots that build solar farms | 31 | +15% | +24% | 15 | $17M | Undisclosed round$17M, Aug 2024 |
| 6 |  Autonomous medical care | 40 | +18% | +60% | 15 | $7.6M | Seed$5.6M, Jan 2026 |
| 7 |  Account Receivables Platform for Latin American Enterprises | 367 | +10% | +27% | 14 | $66.5M | Series A$48M, Apr 2025 |
| 8 |  Simplified digital health insurance for Filipino SMBs | 98 | +4% | +11% | 12 | $6.5M | Seed$6.5M, Jul 2024 |
| 9 |  Building the human layer of AI | 104 | +4% | +33% | 8 | $64.2M | Series B$40M, Nov 2025 |
| 10 |  AI CAD Software for Civil Engineering | 40 | +11% | +21% | 8 | $16.8M | Seed$14.4M, Jul 2024 |
| 11 |  At-home spa, beauty & grooming services marketplace for LatAm | 45 | +7% | +10% | 8 | $2.9M | Undisclosed round$2.8M, Jun 2023 |
| 12 |  Onebrief makes military headquarters run seamlessly | 391 | +9% | +55% | 7 | $311M | Grant$114K, Jul 2026 |
| 13 |  Using the immune system to cure disease | 22 | −31% | −49% | 7 | $25.6M | Series A$21M, Jun 2025 |
| 14 |  Easiest way for companies to process data requests from governments | 99 | +22% | +62% | 5 | $41.2M | Series A$21.2M, Sep 2025 |
| 15 |  Payments powering people | 68 | −1% | +8% | 5 | $62M | Series B$40M, Jun 2026 |
| 16 |  Chime for Canada, starting with cash advances | 37 | −3% | 4 | $125K | YC investment$125K, Jan 2023 | |
| 17 |  Banking, corporate cards, stablecoin payments, available globally. | 98 | +31% | +63% | 3 | $160M | Series C$100M, Apr 2026 |
| 18 |  Turning space into a transportation layer for Earth | 131 | +20% | +30% | 3 | $54.3M | Series A$44M, Nov 2024 |
| 19 |  Global online sales platform | 101 | −5% | +7% | 3 | $125K | YC investment$125K, Jan 2022 |
| 20 |  Building the next generation food ingredient champion. | 78 | 3 | $73.4M | Corporate round$30M, Nov 2025 | ||
| 21 |  Open Source Infrastructure for the Financial Internet | 54 | +2% | +10% | 3 | $30.8M | Series A$21M, Jan 2025 |
| 22 |  Vertical takeoff and landing aircraft for major airlines | 51 | −4% | +11% | 3 | $42.1M | Undisclosed round$173K, Apr 2026 |
| 23 |  Decarbonizing the fashion industry | 45 | +5% | +10% | 3 | $17.1M | Series A$15M, Apr 2024 |
| 24 |  We're building the One Medical for dental | 5 | 0% | −29% | 2 | $125K | YC investment$125K, Aug 2021 |
| 25 |  Fair, simple and accessible financial services | 480 | +4% | +15% | 2 | $86.8M | Corporate round$53M, May 2026 |
| 26 |  Moving Things Around in Space, Imaging Space Objects When We're Not | 211 | 2 | $128M | Series B$75M, Apr 2026 | ||
| 27 |  AppX helps social media creators launch their own mobile apps. | 129 | +2% | +30% | 2 | $1.4M | Seed$1.3M, Jan 2022 |
| 28 |  Smart micro financing for everyone | 81 | −9% | −6% | 2 | $167M | Debt$22.9M, Jun 2026 |
| 29 |  The B2B Payments Platform | 37 | −3% | −3% | 2 | $252M | Debt$15M, Jul 2024 |
| 30 |  Speech and accent coaching app for non-native English speakers | 27 | +29% | +69% | 2 | $27.1M | Series A$21M, Dec 2025 |
| 31 |  The foundation for the next era of science | 6 | +20% | +20% | 2 | SeedJan 2023 | |
| 32 |  We help Accountants automate work and serve their customers online | 83 | +9% | +9% | 1 | $2.7M | Seed$2.2M, Mar 2022 |
| 33 |  We make software for bookkeepers. | 81 | −2% | −9% | 1 | $15.1M | Series A$6.5M, Dec 2025 |
| 34 |  The everything app for LATAM | 1,132 | +10% | +27% | 1 | $71M | Series A$47M, Jun 2022 |
| 35 |  Executable specifications in English for test automation | 338 | 1 | $3.7M | Seed$2.6M, Feb 2024 | ||
| 36 |  Track & Boost Your Brand’s Visibility in AI Search | 141 | +3% | +22% | 1 | $2.6M | Seed$2.5M, Sep 2021 |
| 37 |  Get matched with top 1% of talents in 24h | 134 | −10% | −11% | 1 | $2.9M | Non-equity support$800K, Mar 2022 |
| 38 |  One source of truth for financial data. | 107 | +18% | +45% | 1 | $46.1M | Series B$29.2M, Sep 2025 |
| 39 |  AI-native on-call and incident response carefully crafted to help… | 93 | +22% | +27% | 1 | $15.2M | Series A$12M, Aug 2023 |
| 40 |  Gusto for India | 88 | −3% | −8% | 1 | $4.1M | Seed$4M, Sep 2021 |
| 41 |  A mobile app. It allows employees to get paid their salary on-demand. | 84 | +5% | −1% | 1 | $64M | Undisclosed round$21.7M, Jun 2025 |
| 42 |  Sell anything | 74 | −7% | −1% | 1 | $4.2M | Seed$4.2M, Feb 2023 |
| 43 |  One stop investment solution for retail investors in Latam | 63 | +17% | +17% | 1 | $7.9M | Undisclosed round$3M, Jun 2025 |
| 44 |  One-stop-shop for restaurants to operate and grow their business. | 51 | −6% | −9% | 1 | $5.6M | Seed$5.3M, Oct 2021 |
| 45 |  Loan management software for private lenders | 30 | +3% | +76% | 1 | $13.6M | Series A$13.5M, Feb 2026 |
| 46 |  Workspaces on demand, paid by the minute. | 24 | −4% | 1 | $3.1M | Seed$3M, Nov 2021 | |
| 47 |  AI to understand and automates the physical world | 20 | −9% | −13% | 1 | SeedSep 2022 | |
| 48 |  Low-cost, high-scale EV charging platform for apartments (and more). | 19 | +6% | +6% | 1 | $7.8M | Grant$3M, Feb 2026 |
| 49 |  Truss is a banking and payments network for blue-collar trades. | 14 | +8% | −12% | 1 | $8M | Undisclosed round$3M, Apr 2026 |
| 50 |  Accelerate software development with WarpBuild's 10x faster CI infra. | 12 | +71% | +71% | 1 | $1.5M | Pre-seed$1.5M, Aug 2021 |
Every launched company in YC's public directory, with its batch, status, industry and location. New companies show up the week YC lists them.
Each company is matched to Crustdata by its website. Crustdata adds team size and its change over 6 and 12 months, open roles from job postings, reported funding, and founders' past employers.
Hiring the most counts distinct roles posted in the last 60 days. Growth needs 10+ people today, shrinking 20+ a year ago, so tiny teams do not top the lists. Rebuilt every week.
The numbers on this page come from three Crustdata API calls. Crustdata tags 5,000+ companies with Y Combinator as an investor; swap the filter for any investor, industry or headcount range and track your own list, with founders' work emails one call away.
# 1. every company with Y Combinator as an investor curl https://api.crustdata.com/company/search \ -H "authorization: Bearer $CRUSTDATA_API_KEY" \ -H "x-api-version: 2025-11-01" \ -d '{ "filters": { "field": "funding.investors", "type": "in", "value": ["Y Combinator"] }, "fields": ["basic_info.name", "headcount.total", "headcount.growth_percent", "funding.total_investment_usd"], "limit": 100 }' # 2. open listings per company, last 60 days (limit 0 = counts only) curl https://api.crustdata.com/job/search \ -H "authorization: Bearer $CRUSTDATA_API_KEY" \ -H "x-api-version: 2025-11-01" \ -d '{ "filters": { "op": "and", "conditions": [ { "field": "company.basic_info.company_id", "type": "in", "value": [...] }, { "field": "metadata.date_added", "type": "=>", "value": "2026-08-24" } ]}, "limit": 0, "aggregations": [{ "type": "group_by", "field": "company.basic_info.company_id", "agg": "count" }] }' # 3. the same company filter as a weekly watch: POST /watch/company/search
390 companies were in Y Combinator's Summer 2021 batch (S21); 284 are active.
50 companies posted roles in the last 60 days, led by Stepful (36 roles), Exa (28 roles) and ARQ (24 roles). 85 mark themselves as hiring on YC's directory.
By team growth over 6 months (10+ people): Hirebolt (+100%), Aqua (+93%) and Confido (+89%).
Largest latest rounds in the last 12 months, after their YC batch: Exa ($250M), Slash ($100M) and Turion Space ($75M).