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.
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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
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 salaries6 salary profiles in the US
Most reported roles
H-1B sponsorship
The department split adds up all the years listed above. FY2025 alone: 3 filings.
Peer reviews
Worked with someone at OneSignal?
Anonymous peer reviews on OffTheRecord
Similar companies
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.