CrustdataGet an API key

YC companies founded by ex-Cisco people

48 Y Combinator companies with a founder who worked at Cisco before.

Updated weekly, last on November 9, 2026. Roster from Y Combinator's public directory.

Hiring the mostlast 60 days
7 roles
AssemblyAIS17
  1. 2Arintra1
  2. 3NEXGENT1
See all 4
Fastest growingteam, 6 months
+22%
RootlyS21
  1. 2ShortLoop+20%
  2. 3Ubicloud+18%
See all 10
Shrinkingteam, 12 months
−7%
Yoshi MobilityS16
See all 1
Raised the mostlast 12 months
$27M
HandleW19
  1. 2Arintra$25M
  2. 3Olympian Motors$892K
See all 3
Companies
48
Active
32
Hiring, last 60 days
4
Open roles, 60 days
10
People on these teams
1,572
Showing 48 of 48 companies
CompanyBatchTeam6 mo12 moOpen rolesTotal raisedLast round
Digital trade finance and B2B commerce company
S15444+5%+16%YC$578MDebt$50M, Oct 2025
Enterprise-grade AI for revenue assurance
W22160+8%+55%1$46.4MSeries B$25M, Aug 2026
The best way to build Voice AI apps
S17116+16%+8%7$113MSeries C$50M, Dec 2023
Simplifying Payments and Compliance for Construction Suppliers
W1997 +5%YC$46.6MSeries B$27M, May 2026
W1896+9%+20%1$18.1MSeries A$15M, Nov 2018
AI-native on-call and incident response carefully crafted to help…
S2193+22%+27%1$15.2MSeries A$12M, Aug 2023
Making car ownership and management frictionless.
S1667−1%−7%0
The All-in-One Learning Platform
S16Acquired38−27%−37%0$67.2MSeries C$40M, Mar 2022
The digital bank for small businesses in the Philippines.
W2135+9%+9%0$1.6MSeed$1.6M, Jul 2021
Anjuna enabled organizations to trust any infrastructure
W1835+6%+13%0$67.1MSeries B$25M, Aug 2024
Security Guard Company Marketplace
S14Inactive340%−3%0Undisclosed roundOct 2015
Open Source AI Chat
W24Acquired28−24%−18%0$10.5MSeed$10M, Mar 2025
Build your control plane to deploy your product in your customer VPC…
W2324 +4%YC$5.2MSeed$4.4M, Apr 2023
Open source alternative to AWS
W2420+18%+18%YC$16MSeed$16M, Mar 2024
AI agents for commercial underwriting at banks and fintechs
S2319−5%+27%YC$3.7MSeed$3.2M, Jul 2024
International Billing Ops, Sales Tax and Payments for SaaS businesses
W2418+6%+64%YC$500KYC investment$500K, Feb 2024
Phone AI that Captures Every Dealership Revenue Opportunity
W2318+20%+100%YC$2.7MSeed$2.7M, Jul 2023
Xberts.com is a community-based marketplace for global hardware…
S16Inactive150%+7%0$120KYC investment$120K, Aug 2016
Building the Operating System for the Concert & Live Events Industry.
W1614  0$1.8MSeed$1M, Apr 2019
Next-generation, modular electric vehicles
W2213−7%−13%YC$2.2MEquity crowdfunding$892K, Sep 2026
Autonomous driving technology for farm tractors.
W18Acquired13−7%−19%0$11.4MSeed$7.9M, Jan 2021
Easiest way to set up Zero Trust Access for your team
W22120%0%0$500KYC investment$500K, Apr 2022
A marketplace for live, online workshops for professionals
S20Inactive120%+9%0SeedAug 2020
Code review as a service - combining automation with a network of…
S17Acquired110%0%0$12.7MSeries A$10.4M, Apr 2018
Edwin is virtual English tutor - an AI-powered service for learning…
W18Acquired100%0%0$1.5MSeed$1.5M, Mar 2018
Automated phone ordering system for restaurants
S2180%0%0$125KYC investment$125K, Aug 2021
Marketplace & Software Revolutionizing Yard Care
W1680%0%0SeedMar 2016
Real-time speech translation
W23Acquired70%−12%0$4.7MSeed$4.2M, Dec 2024
Open-source AI coworker with memory
S246  0$500KYC investment$500K, Sep 2024
AI-powered Application Control
S215−17%−17%0$125KYC investment$125K, Jan 2023
Real time B2B hotel room marketplace for various industries…
S145  0
S0750%0%0$1.2MSeries A$1.2M, Apr 2010
AI production engineer for regulated industries
W263  0$500KYC investment$500K, Mar 2026
Accelerate Product Iteration
F253  0$500KYC investment$500K, Dec 2025
Lovable for mobile apps
F253  0$500KYC investment$500K, Dec 2025
AI for Commercial Insurance Agencies
W253−40%−40%0$1.9MSeed$1.8M, Apr 2025
Usage Metering, AI & API Monetization
W23Acquired3  0$3MSeed$3M, Mar 2024
Duolingo for learning anything
S262  0
Turn your agent into a professional video editor
F242  0$500KYC investment$500K, Dec 2024
We deliver toll-free internet apps
W222  0$500KYC investment$500K, Mar 2022
Fast, up-to-date answers for Sales & Support
S20Acquired2  0$1.2MSeed$1.2M, Aug 2020
Grabb-It is a location based Dynamic Digital - OOH advertising…
S18Inactive2  0$120KYC investment$120K, Aug 2018
Stripe for medical billing
F261  0
Turn your ideas into full-stack apps
W231  0
Last mile logistics for delivery & service teams. We bring real-time…
S16Acquired1  0SeedMar 2017
Analytics with action
S11Acquired1  0$2.5MSeed$1M, Feb 2014
W10Inactive1  0SeedJan 2010
AI that builds GTM assets in seconds
W22Inactive56  0$5.3MSeed$5.3M, Apr 2022

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-Cisco founded YC companies

How many ex-Cisco founded YC companies are there?

48 Y Combinator companies have a founder who worked at Cisco; 32 are active.

Which ex-Cisco founded YC companies are hiring?

4 companies posted roles in the last 60 days, led by AssemblyAI (7 roles), Arintra (1 roles) and NEXGENT (1 roles). 10 mark themselves as hiring on YC's directory.

Which ex-Cisco founded YC companies are growing fastest?

By team growth over 6 months (10+ people): Rootly (+22%), ShortLoop (+20%) and Ubicloud (+18%).

Which ex-Cisco founded YC companies raised the most?

Largest latest rounds in the last 12 months, after their YC batch: Handle ($27M), Arintra ($25M) and Olympian Motors ($892K).

Browse YC companies

By batch

Show fewer

By industry

Show fewer

By location

Show fewer

By founders' past employer

Show fewer