Apolloio

Apollo.io is a San Francisco-based company founded in 2015 that specializes in an AI-driven sales intelligence and engagement platform. The platform helps businesses optimize their go-to-market strategies by combining a large and accurate B2B sales leads database with advanced sales execution tools. This enables sales and marketing teams, from startups to large enterprises, to efficiently identify, engage, and convert prospects. The company offers a unified platform that includes lead intelligence, sales engagement tools, and an evolving AI-powered sales platform. Apollo.io provides access to a continuously updated database of B2B contacts and companies, along with features that automate outreach workflows to enhance sales team efficiency. With a customer base of over 500,000 sales professionals and nearly 9,000 paying customers, Apollo.io is recognized for its data accuracy and effectiveness in improving return on investment.

Information Technology & Services San Francisco, United States Founded 2015 ~621 employees Private · Series D

Work at Apolloio in HR or recruiting? Claim this page

Employees
621
+5.3% in the 3 months to Jun 2025
Revenue / employee
$242K
Revenue ~$150M
Total funding
$251M
Last round Series D, Aug 2023
12-month attrition
17.3%
Tech: 10.1%
H1B filings, FY2026
3
Sponsors visas
Open jobs
39
Last 30 days

Headcount trend

Apolloio went from 411 employees in Jul 2023 to 621 in Jun 2025. Jan to Jun 2025: 118 people joined, 50 left.

Headcount data through Jun 2025

Org structure

Headcount by department

Engineering192
Other191
Sales94
Operations45
HR23
Success21
Marketing16
Design16

Funding

  • Aug 2023 · Series D · $100M · Bain Capital Ventures, Sequoia Capital, Tribe Capital
  • Mar 2022 · Series C · $110M · Sequoia Capital, Tribe Capital, Nexus Venture Partners
  • Oct 2021 · Series B · $32M · Tribe Capital, NewView Capital, Nexus Venture Partners
  • Jun 2018 · Series A · $7M · Nexus Venture Partners, Social Capital, Y Combinator
  • Oct 2016 · $2.2M · Y Combinator, SV Angel, Social Capital

Salaries at Apolloio

All salaries

26 salary profiles in India

Most reported roles

Pay by level, gender and ethnicity · US salaries

H-1B sponsorship

H-1B Sponsorship Limited
H-1B Filings by Department
Engineering3

Peer reviews

Worked with someone at Apolloio?

Anonymous peer reviews on OffTheRecord

Read or write a review

Similar companies

Apolloio FAQ

How many employees does Apolloio have?

Apolloio has about 621 employees, up 5.3% over the 3 months to Jun 2025.

Does Apolloio sponsor H1B visas?

Yes. Apolloio filed 3 H1B (LCA) applications in FY2026, according to the latest U.S. Department of Labor disclosures. Most of them were for Engineering roles.

What is Apolloio's revenue per employee?

Apolloio makes about $242K in revenue per employee, based on $150M annual revenue and 621 employees.

How much does Apolloio pay?

6figr has 26 salary profiles for Apolloio in India and 10 in the US, with pay broken down by role, level and gender on the Apolloio salaries page. See Apolloio salaries in India

How much funding has Apolloio raised?

Apolloio has raised $251.2M in total funding; its latest round was Series D in Aug 2023.

Data from Company Prospectus, DOL LCA disclosures, WARN notices and 6figr salary profiles.