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YC companies founded by ex-Yahoo people

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.

Hiring the mostlast 60 days
2 roles
InstaworkS15
  1. 2GoLinks1
  2. 3Quartzy1
See all 3
Fastest growingteam, 6 months
+8%
MashginW15
  1. 2Aesthetic+8%
  2. 3Instawork+7%
See all 5
Shrinkingteam, 12 months
−39%
Reforged LabsW22
  1. 2AmpUp−15%
  2. 3Datasaur−4%
See all 4
Companies
39
Active
19
Hiring, last 60 days
3
Open roles, 60 days
4
People on these teams
4,082
Showing 39 of 39 companies
CompanyBatchTeam6 mo12 moOpen rolesTotal raisedLast round
A flexible work app that connects businesses with hourly workers.
S152,747+7%+16%2$148MSeries D$60M, May 2023
Pioneer in immersive code education. Acquired by Zovio (NASDAQ: ZVO)…
S12Acquired334−3%−2%0SeedAug 2012
Create jaw dropping virtual events
W20Inactive217+1%+9%0$12MSeries A$12M, Jun 2022
Self-Checkout using Computer Vision.
W15130+8%+13%YC$73.7MSeries B$62.5M, May 2022
Marketplace for life science supplies.
S1194−1%+4%1$50.2MDebt$23M, Apr 2026
Modern user-focused observability built on OpenTelemetry
S19Acquired93−28%−26%0$77MUndisclosed round$20M, Jul 2023
Datasaur builds private AI/agents for enterprise/government
W2064−3%−4%0$7.9MSeed$4M, Aug 2023
An AI-powered digital grocer that delivers in under 60 mins.
S16Inactive54+2%+6%0$34.4MSeries B$19.4M, Oct 2021
We make EV charging as simple and reliable as LED lights
W1953−2%−15%0$17MSeries A$15M, Sep 2024
Intuitive, easy-to-remember short links - powered by AI.
W1950+6%+11%1$27MSeries A$27M, Feb 2022
Manage every device. Govern every AI agent.
S20430%−2%YC$3MSeed$1.5M, Jun 2025
E-commerce platform for construction materials in Indonesia
S2235+3%+6%0$500KYC investment$500K, Jan 2024
LendUp is a socially responsible company on a mission to redefine…
W12Inactive22+22%+22%0$362MUndisclosed round$100M, Jun 2017
Online & In-Person Kids Activities
W17Acquired21−5%−12%0$11.6MSeries B$5.5M, May 2019
Turn intuition into insights, in minutes
W2214−44%−39%YC$3.9MSeed$3.9M, Aug 2024
Your AI-powered creative apprentice 🪄
S1814+8% 0$3.1MSeed$3.1M, Feb 2022
Authorization and access control as a service.
S21Acquired13−7%−7%0$125KYC investment$125K, Aug 2021
Tandem is a virtual office for remote and distributed teams.
S19Inactive100%0%0$7.5MSeries A$7.5M, Sep 2019
Automated phone ordering system for restaurants
S2180%0%0$125KYC investment$125K, Aug 2021
Marketplace & Software Revolutionizing Yard Care
W1680%0%0SeedMar 2016
Product design tool that lets everyone design like a designer
W2370%0%0$500KYC investment$500K, Apr 2023
ML models automatically monitor business performance
W20Inactive70%+17%0Pre-seedMar 2020
World's largest library of interactive lessons for kids
S206−14%−33%0$125KYC investment$125K, Aug 2020
AI Agents for Lending Operations
S245  0$500KYC investment$500K, May 2025
Procure the right software 5x faster
W2150%−62%0SeedJan 2021
"Name Your Price" for products
S1450%0%0$1.2MSeed$1M, Oct 2014
Automated contract review with AI
W22Acquired4 −43%0$1.9MPre-seed$1.9M, Aug 2022
Fastest Storage Engine with the Best Compression, we enables direct…
W17Acquired4  0$120KYC investment$120K, Mar 2017
Mosaix builds the NLP for the local languages at the emerging markets.
S16Inactive4  0
The personal AI agent that keeps up with your work and life.
X262  0$500KYC investment$500K, Jun 2026
Messenger for communities
W18Inactive2  0$2.3MSeed$2.3M, Aug 2018
IMDB of conferences.
W11Acquired2  0$1.4MSeed$1.4M, Sep 2011
Better PhoneGap.
W08Inactive2  0$1.5MSeed$1M, Jan 2012
Reimagining education with short form video and AI
W231  YC$500KYC investment$500K, Apr 2023
Modern analytics for CPG brands
W23Acquired1  0$500KYC investment$500K, Apr 2023
Acquired by Brex. Building digital payments infrastructure.
W19Acquired1  0SeedMar 2019
Monthli is the first marketplace for homeowner associations. We…
W16Inactive  0$120KYC investment$120K, Mar 2016
Convert Design files to working websites automagically
S12Inactive  0
Eyetracking using webcams.
S10Acquired  0SeedJun 2010

How this works

1. The roster

Every launched company in YC's public directory, with its batch, status, industry and location. New companies show up the week YC lists them.

2. The numbers

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.

3. The lists

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.

Built with Crustdata. Get your own API key and build your own.

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.

  • Company search for team size, growth and funding
  • Job search with a count by company, for who is hiring and for what
  • A watch that re-runs the search weekly and sends only what changed
# 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

Questions about ex-Yahoo founded YC companies

How many ex-Yahoo founded YC companies are there?

39 Y Combinator companies have a founder who worked at Yahoo; 19 are active.

Which ex-Yahoo founded YC companies are hiring?

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.

Which ex-Yahoo founded YC companies are growing fastest?

By team growth over 6 months (10+ people): Mashgin (+8%), Aesthetic (+8%) and Instawork (+7%).

Which ex-Yahoo founded YC companies raised the most?

No reported rounds after their YC batch in the last 12 months.

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