Get an API keyGet an API key15 Y Combinator companies based in Seoul, with team size, growth, open roles and funding.
Updated weekly, last on November 9, 2026. Roster from Y Combinator's public directory.
FountainS15
MisoS16Fountain+2%
QueryPie AIW20| Company | Batch | Team | 6 mo | 12 mo | Open roles | Total raised | Last round |
|---|---|---|---|---|---|---|---|
High volume hiring made simple | S15 | 425 | +2% | +5% | 14 | $219M | Series C$100M, Jun 2022 |
We make booking services as easy as buying products online. | S16 | 107 | +4% | +13% | YC | $10.7M | Series A$8M, Mar 2021 |
 Superb AI provides end-to-end computer vision MLOps platform | W19 | 64 | +19% | 0 | $47.9M | Grant$402K, May 2026 | |
QueryPie AIP - Enterprise Ready Agentic AI Platform | W20 | 63 | −6% | −11% | 0 | $51.3M | Undisclosed round$27.8M, Mar 2024 |
 Autonomous trucks to fully automate long-haul freight shipping | W19 | 16 | 0% | +14% | 0 | $14.3M | Grant$1.4M, May 2026 |
 All-in-One Sales and Marketing CRM for B2B teams | S22 | 9 | −36% | −40% | 0 | $2.6M | YC investment$500K, Aug 2022 |
 Pipe for online businesses | S21Inactive | 6 | 0% | +20% | 0 | $125K | YC investment$125K, Jan 2023 |
 Monetization platform for character creators | S21 | 5 | 0% | 0% | 0 | $1.3M | Seed$1.3M, Oct 2021 |
 The AI notepad that knows and works for you | S25 | 4 | −20% | 0 | SeedJul 2025 | ||
 Real-time AI translator for global sales and marketing | W25 | 3 | 0 | $2.3M | Seed$1.8M, Nov 2025 | ||
 AI that keeps complex construction projects on schedule. | W21 | 3 | 0 | ||||
 AI-native growth agency for consumer brands | X26 | 2 | 0 | Pre-seed (before YC)Mar 2026 | |||
 AI-native crypto hedge fund | W22 | 1 | 0 | Pre-seedDec 2022 | |||
 Equity management platform for startups and investors. | W21 | ||||||
 Local services marketplace that connects providers with new customers | W17Acquired |
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
15 Y Combinator companies are based in Seoul; 13 are active.
1 companies posted roles in the last 60 days, led by Fountain (14 roles). 1 mark themselves as hiring on YC's directory.
By team growth over 6 months (10+ people): Miso (+4%) and Fountain (+2%).
No reported rounds after their YC batch in the last 12 months.