Get an API keyGet an API key12 Y Combinator companies with a founder who worked at Gusto before.
Updated weekly, last on November 9, 2026. Roster from Y Combinator's public directory.
MutinyS18MutinyS18
Risotto+6%MutinyS18RisottoW24| Company | Batch | Team | 6 mo | 12 mo | Open roles | Total raised | Last round |
|---|---|---|---|---|---|---|---|
Your AI agent for creating anything customer-facing, in minutes. | S18 | 52 | +8% | −4% | 3 | $71.6M | Series B$50M, Apr 2022 |
Risotto auto-solves IT support requests using AI | W24 | 19 | +6% | +111% | 0 | $10.5M | Seed$10M, Jan 2026 |
 Turn the web into structured data | F24 | 9 | 0% | 0% | 0 | $500K | YC investment$500K, Dec 2024 |
 Bookkeeping, compliance and tax for founders | F24 | 4 | −20% | −33% | 0 | Pre-seedMay 2025 | |
 Test agents in realistic worlds built from production usage | F26 | 3 | 0 | ||||
 The AI-Native Consumer + Plaintiff Law Firm | X25 | 3 | 0 | $500K | YC investment$500K, Jun 2025 | ||
 AI Agent for Billpay platforms to pay invoices with virtual cards | W23 | 3 | 0 | $500K | YC investment$500K, Apr 2023 | ||
 Building secure polymorphic apps | W26 | 2 | 0 | $500K | YC investment$500K, Apr 2026 | ||
 Constituent system-of-record and service request management software… | S16Acquired | 2 | 0 | $3.5M | Seed$3.5M, Feb 2018 | ||
 Give Your Employee An Employee | W24 | 1 | 0 | ||||
 Incentives and financing for energy efficiency upgrades | S23Inactive | 1 | 0 | $500K | YC investment$500K, Sep 2023 | ||
 Quickly build internal tools for your ops team's manual workflows | W20Acquired | 1 | 0 | $150K | YC investment$150K, Mar 2020 |
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
12 Y Combinator companies have a founder who worked at Gusto; 9 are active.
1 companies posted roles in the last 60 days, led by Mutiny (3 roles). 1 mark themselves as hiring on YC's directory.
By team growth over 6 months (10+ people): Mutiny (+8%) and Risotto (+6%).
Largest latest rounds in the last 12 months, after their YC batch: Risotto ($10M).