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S13 companies hiring the most right now

The 6 YC S13 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.

Showing 6 of 6 companies on this list
#CompanyTeam6 mo12 moOpen rolesTotal raisedLast round
1
Restaurant delivery.
84,144+3%+8%129$5.2BPost-IPO debt$2.8B, Oct 2026
2
Professional website design and publishing platform.
1,847+9%+16%46$335MUndisclosed round$400K, Apr 2025
3
Improving education for every student.
412+5%+10%9$92.7MSeries C$60M, Sep 2021
4
Financial Services for Financial Caregivers.
108+4%+8%4$68.3MSeries B$35M, Jul 2020
5
Lob is the only automation platform that transforms direct mail into…
440+8%+14%3$82.3MSeries C$50M, Feb 2021
6
The shipping infrastructure of the internet.
347−7%−13%3$88.7MSeries B$25M, Sep 2021

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 YC S13 companies

How many YC S13 companies are there?

52 companies were in Y Combinator's Summer 2013 batch (S13); 10 are active.

Which YC S13 companies are hiring?

6 companies posted roles in the last 60 days, led by DoorDash (129 roles), Webflow (46 roles) and Panorama Education (9 roles). 3 mark themselves as hiring on YC's directory.

Which YC S13 companies are growing fastest?

By team growth over 6 months (10+ people): Webflow (+9%), Lob (+8%) and Panorama Education (+5%).

Which YC S13 companies raised the most?

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

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