OneSignal
OneSignal provides messaging tools for app publishers to communicate with users via push notifications, email, SMS/RCS, and in-app messages. The company sends over 1.3 trillion messages annually and is used by 25% of app publishers.
The growth story
OneSignal grew from 102 to 167 employees between 2021 and 2026, raising $82M along the way, most recently a Series C in January 2023.
About
OneSignal sells software that helps app developers send messages to their users across multiple channels. Its customers use the platform to onboard new users, drive engagement, and reduce churn.
The company raised $82M in a Series C round in January 2023 and employs 167 people. It processes over 1.3 trillion messages per year, a scale that underscores its position as a major player in customer engagement tools.
Founders and leadership
Engineering is the largest function at OneSignal, with 55 employees. The company has a median tenure of 2 years, suggesting moderate turnover. Leadership includes investors like Asymmetry Ventures and Gil Elbaz.
The OneSignal org chart
George Deglin (Co-founder & CEO) leads 60 mapped leaders with 3 direct reports. Click +N to expand a team; names link to the person’s public profile.
Departments, and which ones grew
Headcount by function: Engineering 68 (+6% YoY), Sales 38 (+12% YoY), Customer Success and Support 13 (+30% YoY), Marketing 9 (+50% YoY), Business Development 8 (0% YoY), Information Technology 7 (-30% YoY).
Talent flow
OneSignal hires heavily from Zendesk, Khoros, and Oracle, with 5 employees each from those companies. Alumni frequently move to Salesforce, Dimely (YC), and Rippling. The company recruits from UC Berkeley and Cal Poly San Luis Obispo more than other schools.
Most common previous employers of OneSignal staff: Zendesk (5), Khoros (5), Oracle (5), Twilio (4), Facebook (4), Salesforce (3). Former OneSignal employees most often moved to Salesforce (4), Dimely (YC) (2), Rippling (2), Semrush (2), Rime (2), Meta (2).
Alumni worth knowing
The OneSignal mafia
OneSignal alumni have founded 11 companies, including Latent (121 staff), Upscale AI (24 staff), and Crackd (22 staff). Dimely (YC), founded by a OneSignal alum, employs 5 people.
11Kevin Weatherman, was CRO/VP of Business Development until 2018Arun Khemani, was FP&A Intern until 2022Jim Benton, was EIR & Advisor until 2019Peter S., was Founding Data Scientist until 2024Devin Guan, was Advisor until 2021
Frances Liu, was Head of Data Science & Machine Learning until 2022
Neil Gandhi, was Growth until 2020
Bryan Smith, was Vice President Of Engineering until 2020
Ruby Childs, was Principal Product Manager and Designer until 2024Web traffic
Traffic mix: 67% direct, 19% search, 2% social, 1% paid.
What this company is made of
Most common skills at OneSignal: Leadership (59), Microsoft Office (53), JavaScript (49), Social Media (47), Customer Service (44), Management (43), Marketing (42), Microsoft Excel (40).
Where the team actually sits
OneSignal people are concentrated in California, United States (38), England, United Kingdom (15), San Francisco Bay Area (13), New York, United States (12).
Search footprint
OneSignal attracts about 9,336 organic search visits a month, traffic worth roughly $164K a month if bought through ads. It gained 2,165 ranking keywords and lost 3,467 in the last period.
What employees say
- Compensation
- 3.90 / 5
- Career opportunities
- 3.90 / 5
- Senior management
- 3.70 / 5
- Work-life balance
- 4.20 / 5
Frequently asked
OneSignal has 167 employees as of September 2026.
OneSignal has raised $82M in total, most recently a Series C round in January 2023.
OneSignal was founded in 2014 by George Deglin.
George Deglin (Co-founder & CEO) sits at the top of OneSignal's reporting structure, with 3 direct reports.
The most common previous employers of current OneSignal staff are Zendesk (5 people), Khoros (5 people), Oracle (5 people).
Former OneSignal employees most often move to Salesforce (4), Dimely (YC) (2), Rippling (2).
At least 11 companies have a founder who previously worked at OneSignal, including Latent, Upscale AI, Crackd.
OneSignal attracts about 9,336 organic search visits a month, worth roughly $164K a month in equivalent ad spend.
The most common skills among OneSignal staff are Leadership, Microsoft Office, JavaScript, Social Media, Customer Service.
OneSignal staff are concentrated in California, United States (38), England, United Kingdom (15), San Francisco Bay Area (13).
OneSignal has about 68 people in Engineering, up 6% over the past year, as of September 2026.
OneSignal has about 38 people in Sales, up 12% over the past year, as of September 2026.
Computed from 148 current and 196 former OneSignal profiles, as of September 2026. Source: Crustdata.
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