PubNub
PubNub provides real-time infrastructure APIs and messaging services, processing over 3 trillion API transactions monthly for 2,000+ customers across 40 industries. The company raised $134M in a Series E round in late 2021.
The growth story
PubNub grew from 134 to 123 employees between 2021 and 2026, raising $134M along the way, most recently a Series E in November 2021.
About
PubNub sells APIs and edge computing tools that enable real-time messaging and low-latency logic for interactive applications. Its customers span 40 industries, suggesting broad applicability across sectors.
The company processes 3 trillion API transactions monthly, indicating massive scale in real-time data handling. With $134M in total funding, including a Series E round in 2021, PubNub has secured substantial backing for its infrastructure services.
Founders and leadership
Engineering is PubNub's largest function, accounting for 42 of its 123 employees. The company has a median tenure of 4 years, suggesting relatively stable staffing compared to many tech firms.
The PubNub org chart
Todd Greene (CEO) leads 43 mapped leaders with 7 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 45 (0% YoY), Sales 14 (0% YoY), Information Technology 13 (+18% YoY), Business Development 7 (-12% YoY), Operations 6 (+20% YoY), Accounting 6 (+50% YoY).
Talent flow
PubNub hires heavily from enterprise tech firms, with IBM, Cisco, and Micro Focus among its top talent sources. Alumni frequently move to major tech companies like Google and Microsoft.
Most common previous employers of PubNub staff: IBM (5), Loyalize (4), OpSec Security (4), Micro Focus (4), PwC (3), Cisco (3). Former PubNub employees most often moved to Google (5), Microsoft (3), Atlassian (2), Salesforce (2), Ironclad (2), Sierra (2).
Alumni worth knowing
The PubNub mafia
PubNub alumni have founded 9 companies, including Sift, which has grown to 278 employees, and several smaller startups like GVO and TestDriver.ai.
9Marc Friend, was Chief Financial Officer until 2019Siddharth Ghosh, was Director - APAC until 2025Ian Jennings, was Developer Experience until 2019Dan Zeitman, was Developer Evangelist until 2017Timotei Centea, was Sales and Business Development until 2021
Pomm Suppakijjumnong, was Operations Manager until 2019
Jasdeep Jaitla, MBA, was Senior Director of Strategy until 2022
Lara Stiris, was Sr. Marketing Manager, Demand Generation until 2018Web traffic
Traffic mix: 32% direct, 47% search, 9% social, 0% paid.
What this company is made of
Most common skills at PubNub: Management (36), Cloud Computing (34), Python (Programming Language) (31), Software Development (30), SQL (29), JavaScript (29), Software as a Service (SaaS) (28), MySQL (28).
Where the team actually sits
PubNub people are concentrated in California, United States (17), Śląskie, Poland (17), San Francisco Bay Area (8), England, United Kingdom (6). 3 offices on record.
Search footprint
PubNub attracts about 27,380 organic search visits a month, traffic worth roughly $160K a month if bought through ads. It gained 3,701 ranking keywords and lost 3,729 in the last period.
What employees say
- Compensation
- 4.10 / 5
- Career opportunities
- 3.70 / 5
- Senior management
- 3.70 / 5
- Work-life balance
- 4.30 / 5
Frequently asked
PubNub has 123 employees as of September 2026.
PubNub has raised $134M in total, most recently a Series E round in November 2021.
Todd Greene (CEO) sits at the top of PubNub's reporting structure, with 7 direct reports.
The most common previous employers of current PubNub staff are IBM (5 people), Loyalize (4 people), OpSec Security (4 people).
Former PubNub employees most often move to Google (5), Microsoft (3), Atlassian (2).
At least 9 companies have a founder who previously worked at PubNub, including Sift, GVO, Discovery Outcomes.
PubNub attracts about 27,380 organic search visits a month, worth roughly $160K a month in equivalent ad spend.
The most common skills among PubNub staff are Management, Cloud Computing, Python (Programming Language), Software Development, SQL.
PubNub staff are concentrated in California, United States (17), Śląskie, Poland (17), San Francisco Bay Area (8).
PubNub has about 45 people in Engineering, up 0% over the past year, as of September 2026.
PubNub has about 14 people in Sales, up 0% over the past year, as of September 2026.
Computed from 106 current and 277 former PubNub profiles, as of September 2026. Source: Crustdata.
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