PostHog
PostHog sells an open source platform for product analytics and testing tools, used by over 100,000 companies. The San Francisco-based startup has raised $182M and employs 213 people.
The growth story
PostHog grew from 28 to 213 employees between 2021 and 2026, raising $182M along the way, most recently a Series E in September 2025.
About
PostHog provides a unified platform for product analytics, heatmaps, session recording, feature flags, and A/B testing. Its tools are designed for product teams that want to avoid integrating multiple vendors, with versions hosted in the US or EU that meet SOC2, GDPR, and HIPAA standards.
The company launched in 2020 during Y Combinator's W20 cohort and quickly gained traction, achieving the most successful B2B software launch on Hacker News since 2012. It has since scaled to over 100,000 users and raised $182M in funding, reaching a Series E round in 2025.
Founders and leadership
Engineering is PostHog's largest function with 104 employees, nearly half of its 213-person workforce. The company has a median tenure of 1 year, suggesting rapid scaling and turnover.
The PostHog org chart
james hawkins (co-ceo) leads 47 mapped leaders with 14 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 96 (+75% YoY), Sales 22 (+120% YoY), Information Technology 17 (+42% YoY), Business Development 12 (+20% YoY), Customer Success and Support 10 (+150% YoY), Human Resources 9 (+50% YoY).
Talent flow
PostHog hires heavily from analytics and software companies, with Hotjar, Microsoft, and IBM being top sources. Its alumni have founded 8 companies, including SafetyClerk and Keep it Cool.
Most common previous employers of PostHog staff: Hotjar | by Contentsquare (8), Microsoft (7), IBM (6), Elastic (4), Automattic (4), Amazon (4). Former PostHog employees most often moved to Matrix OS (1), ElevenLabs (1), Peak XV Partners (1), Tano (1), Aikido Security (1), Storyblok (1).
Alumni worth knowing
The PostHog mafia
PostHog alumni have founded 8 companies, including SafetyClerk (15 staff), Keep it Cool (7 staff), and End Close (3 staff).
8Guido Iaquinti, was Software Engineer until 2023Rick Marron, was Software Engineer until 2022David Newell, was Product Engineer until 2025Harry Waye, was Software Engineer until 2023Ellie Huxtable, was Infrastructure Team Lead until 2023Hamed Mohammadpour, was Product Engineer until 2025
Grace McKenzie, was Finance & Operations Lead until 2023Web traffic
Traffic mix: 72% direct, 14% search, 4% social, 1% paid.
What this company is made of
Most common skills at PostHog: JavaScript (102), Python (Programming Language) (95), SQL (70), React.js (66), Cascading Style Sheets (CSS) (65), Git (64), Project Management (62), Leadership (58).
Where the team actually sits
PostHog people are concentrated in England, United Kingdom (19), California, United States (14), Washington, United States (9), Ontario, Canada (8).
Search footprint
PostHog attracts about 5,546 organic search visits a month, traffic worth roughly $96K a month if bought through ads. It gained 2,159 ranking keywords and lost 2,337 in the last period.
What employees say
- Compensation
- 4.90 / 5
- Career opportunities
- 4.40 / 5
- Senior management
- 4.40 / 5
- Work-life balance
- 4.70 / 5
Frequently asked
PostHog has 213 employees as of September 2026.
PostHog has raised $182M in total, most recently a Series E round in September 2025.
james hawkins (co-ceo) sits at the top of PostHog's reporting structure, with 14 direct reports.
The most common previous employers of current PostHog staff are Hotjar | by Contentsquare (8 people), Microsoft (7 people), IBM (6 people).
Former PostHog employees most often move to Matrix OS (1), ElevenLabs (1), Peak XV Partners (1).
At least 8 companies have a founder who previously worked at PostHog, including SafetyClerk, Keep it Cool, End Close.
PostHog attracts about 5,546 organic search visits a month, worth roughly $96K a month in equivalent ad spend.
The most common skills among PostHog staff are JavaScript, Python (Programming Language), SQL, React.js, Cascading Style Sheets (CSS).
PostHog staff are concentrated in England, United Kingdom (19), California, United States (14), Washington, United States (9).
PostHog has about 96 people in Engineering, up 75% over the past year, as of September 2026.
PostHog has about 22 people in Sales, up 120% over the past year, as of September 2026.
Computed from 201 current and 59 former PostHog profiles, as of September 2026. Source: Crustdata.
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