OneSignal

OneSignal is a customer messaging platform founded in 2014 by George Deglin and Long Vo. The company was created to address challenges with existing push notification tools that were not user-friendly for developers. OneSignal offers a multi-channel engagement platform that allows businesses to send personalized messages through push notifications, SMS, email, and in-app messaging. The platform focuses on intelligent delivery, analyzing user behavior to optimize the timing and content of messages. This approach helps improve user retention and engagement. OneSignal serves over 1.3 million developers and marketers, powering messaging for hundreds of thousands of mobile apps and more than 70% of websites that utilize push notifications. The company delivers over 12 billion messages daily and supports a diverse range of businesses, including many Fortune 500 companies. Key features include powerful APIs, customizable workflows, and automation tools designed for businesses of all sizes. OneSignal aims to democratize access to customer engagement technology while providing a reliable infrastructure and excellent support.

Information Technology & Services San Mateo, United States Founded 2014 ~127 employees Private · Series C

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Employees
127
+5% in the 3 months to Jun 2025
Revenue / employee
$224K
Revenue ~$28.5M
Total funding
$84M
Last round Series C, Jan 2023
12-month attrition
20.3%
Tech: 15.4%
H1B filings, FY2025
3
Sponsors visas

Headcount trend

OneSignal went from 125 employees in Jul 2023 to 127 in Jun 2025. Jan to Jun 2025: 20 people joined, 15 left.

Headcount data through Jun 2025

Org structure

Headcount by department

Engineering49
Other22
Sales20
Marketing10
Success10
HR4
Finance3
Operations3

Funding

  • Jan 2023 · Series C
  • Aug 2022 · Series C · $50M · SignalFire
  • Apr 2021 · HubSpot
  • Aug 2019 · Series B · $25M · SignalFire, Rakuten Ventures
  • Aug 2017 · Series A · $7M · SignalFire
  • Apr 2015 · Seed · $2M · Y Combinator

Salaries at OneSignal

All salaries

6 salary profiles in the US

Most reported roles

Pay by level, gender and ethnicity

H-1B sponsorship

H-1B Sponsorship Limited
H-1B Filings by Department
Engineering3
Marketing1

The department split adds up all the years listed above. FY2025 alone: 3 filings.

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OneSignal FAQ

How many employees does OneSignal have?

OneSignal has about 127 employees, up 5% over the 3 months to Jun 2025.

Does OneSignal sponsor H1B visas?

Yes. OneSignal filed 3 H1B (LCA) applications in FY2025, according to the latest U.S. Department of Labor disclosures. Most of them were for Engineering roles.

What is OneSignal's revenue per employee?

OneSignal makes about $224K in revenue per employee, based on $28.5M annual revenue and 127 employees.

How much does OneSignal pay?

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

How much funding has OneSignal raised?

OneSignal has raised $84M in total funding; its latest round was Series C in Jan 2023.

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