39 Y Combinator companies with a founder who worked at Yahoo before.
Updated weekly, last on November 9, 2026. Roster from Y Combinator's public directory.
| Company | Batch | Team | 6 mo | 12 mo | Open roles | Total raised | Last round |
|---|---|---|---|---|---|---|---|
A flexible work app that connects businesses with hourly workers. | S15 | 2,747 | +7% | +16% | 2 | $148M | Series D$60M, May 2023 |
Pioneer in immersive code education. Acquired by Zovio (NASDAQ: ZVO)… | S12Acquired | 334 | −3% | −2% | 0 | SeedAug 2012 | |
Create jaw dropping virtual events | W20Inactive | 217 | +1% | +9% | 0 | $12M | Series A$12M, Jun 2022 |
Self-Checkout using Computer Vision. | W15 | 130 | +8% | +13% | YC | $73.7M | Series B$62.5M, May 2022 |
Marketplace for life science supplies. | S11 | 94 | −1% | +4% | 1 | $50.2M | Debt$23M, Apr 2026 |
Modern user-focused observability built on OpenTelemetry | S19Acquired | 93 | −28% | −26% | 0 | $77M | Undisclosed round$20M, Jul 2023 |
Datasaur builds private AI/agents for enterprise/government | W20 | 64 | −3% | −4% | 0 | $7.9M | Seed$4M, Aug 2023 |
An AI-powered digital grocer that delivers in under 60 mins. | S16Inactive | 54 | +2% | +6% | 0 | $34.4M | Series B$19.4M, Oct 2021 |
We make EV charging as simple and reliable as LED lights | W19 | 53 | −2% | −15% | 0 | $17M | Series A$15M, Sep 2024 |
Intuitive, easy-to-remember short links - powered by AI. | W19 | 50 | +6% | +11% | 1 | $27M | Series A$27M, Feb 2022 |
Manage every device. Govern every AI agent. | S20 | 43 | 0% | −2% | YC | $3M | Seed$1.5M, Jun 2025 |
E-commerce platform for construction materials in Indonesia | S22 | 35 | +3% | +6% | 0 | $500K | YC investment$500K, Jan 2024 |
LendUp is a socially responsible company on a mission to redefine… | W12Inactive | 22 | +22% | +22% | 0 | $362M | Undisclosed round$100M, Jun 2017 |
Online & In-Person Kids Activities | W17Acquired | 21 | −5% | −12% | 0 | $11.6M | Series B$5.5M, May 2019 |
Turn intuition into insights, in minutes | W22 | 14 | −44% | −39% | YC | $3.9M | Seed$3.9M, Aug 2024 |
Your AI-powered creative apprentice 🪄 | S18 | 14 | +8% | 0 | $3.1M | Seed$3.1M, Feb 2022 | |
Authorization and access control as a service. | S21Acquired | 13 | −7% | −7% | 0 | $125K | YC investment$125K, Aug 2021 |
Tandem is a virtual office for remote and distributed teams. | S19Inactive | 10 | 0% | 0% | 0 | $7.5M | Series A$7.5M, Sep 2019 |
Automated phone ordering system for restaurants | S21 | 8 | 0% | 0% | 0 | $125K | YC investment$125K, Aug 2021 |
Marketplace & Software Revolutionizing Yard Care | W16 | 8 | 0% | 0% | 0 | SeedMar 2016 | |
Product design tool that lets everyone design like a designer | W23 | 7 | 0% | 0% | 0 | $500K | YC investment$500K, Apr 2023 |
ML models automatically monitor business performance | W20Inactive | 7 | 0% | +17% | 0 | Pre-seedMar 2020 | |
World's largest library of interactive lessons for kids | S20 | 6 | −14% | −33% | 0 | $125K | YC investment$125K, Aug 2020 |
AI Agents for Lending Operations | S24 | 5 | 0 | $500K | YC investment$500K, May 2025 | ||
Procure the right software 5x faster | W21 | 5 | 0% | −62% | 0 | SeedJan 2021 | |
"Name Your Price" for products | S14 | 5 | 0% | 0% | 0 | $1.2M | Seed$1M, Oct 2014 |
Automated contract review with AI | W22Acquired | 4 | −43% | 0 | $1.9M | Pre-seed$1.9M, Aug 2022 | |
Fastest Storage Engine with the Best Compression, we enables direct… | W17Acquired | 4 | 0 | $120K | YC investment$120K, Mar 2017 | ||
Mosaix builds the NLP for the local languages at the emerging markets. | S16Inactive | 4 | 0 | ||||
The personal AI agent that keeps up with your work and life. | X26 | 2 | 0 | $500K | YC investment$500K, Jun 2026 | ||
Messenger for communities | W18Inactive | 2 | 0 | $2.3M | Seed$2.3M, Aug 2018 | ||
IMDB of conferences. | W11Acquired | 2 | 0 | $1.4M | Seed$1.4M, Sep 2011 | ||
Better PhoneGap. | W08Inactive | 2 | 0 | $1.5M | Seed$1M, Jan 2012 | ||
Reimagining education with short form video and AI | W23 | 1 | YC | $500K | YC investment$500K, Apr 2023 | ||
Modern analytics for CPG brands | W23Acquired | 1 | 0 | $500K | YC investment$500K, Apr 2023 | ||
Acquired by Brex. Building digital payments infrastructure. | W19Acquired | 1 | 0 | SeedMar 2019 | |||
Monthli is the first marketplace for homeowner associations. We… | W16Inactive | 0 | $120K | YC investment$120K, Mar 2016 | |||
Convert Design files to working websites automagically | S12Inactive | 0 | |||||
Eyetracking using webcams. | S10Acquired | 0 | SeedJun 2010 |
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
39 Y Combinator companies have a founder who worked at Yahoo; 19 are active.
3 companies posted roles in the last 60 days, led by Instawork (2 roles), GoLinks (1 roles) and Quartzy (1 roles). 7 mark themselves as hiring on YC's directory.
By team growth over 6 months (10+ people): Mashgin (+8%), Aesthetic (+8%) and Instawork (+7%).
No reported rounds after their YC batch in the last 12 months.