Happydemics
Happydemics is a Paris-based advertising measurement platform that analyzes consumer responses across media channels to improve ad effectiveness. The 86-person company raised $27M in a Series B round in December 2024.
The growth story
Happydemics grew from 50 to 86 employees between 2021 and 2026, raising $27M along the way, most recently a Series B in December 2024.
About
Happydemics provides tools for brands, media agencies and platforms to measure advertising performance across channels like connected TV, digital audio and in-game ads. Its platform analyzes real consumer responses to predict ad effectiveness and guide creative and media decisions.
The company has grown to 86 employees since its 2015 founding, with sales being its largest function. Its $27M Series B in December 2024 suggests continued expansion, though recent headcount growth rates are unclear.
Founders and leadership
Sales is Happydemics' largest function with 11 employees. The company has a median tenure of 3 years, indicating moderate employee retention. Leadership includes founders and investors from the advertising and tech sectors.
The Happydemics org chart
Tarek O. (CEO + Founder of Happydemics) leads 42 mapped leaders with 5 direct reports. Click +N to expand a team; names link to the person’s public profile.
Departments, and which ones grew
Headcount by function: Sales 12 (+50% YoY), Entrepreneurship 11 (0% YoY), Business Development 10 (+11% YoY), Engineering 10 (+25% YoY), Marketing 10 (+11% YoY), Product Management 6 (0% YoY).
Talent flow
Happydemics hires from advertising tech firms like Teads and Nielsen, as well as French technical schools like EPITECH. Alumni move to companies in analytics, payments and market research, with several founding their own startups.
Most common previous employers of Happydemics staff: Teads (2), Nielsen (2), EPITECH - European Institute of Technology (2), Smartly (2), FCA Fiat Chrysler Automobiles (2), Digitalkeys (2). Former Happydemics employees most often moved to SNCF Connect & Tech (1), Datelia (1), Toucan (1), Payplug (1), Ipsos (1), Au Bout Du Champ (1).
Alumni worth knowing
The Happydemics mafia
Three Happydemics alumni have founded companies, including Au Bout Du Champ (25 employees), Datelia (2 employees) and Aquila (1 employee).
3Elsa Martineau, was Board Member until 2025Charlotte Taupin, was Partner & Chief Strategy Officer until 2022Badr Temoun, was Senior Business Developer Europe - Middle East until 2025Web traffic
Traffic mix: 43% direct, 40% search, 3% social, 1% paid.
What this company is made of
Most common skills at Happydemics: Microsoft Office (37), Project Management (37), English (35), Marketing (34), Management (31), Digital Marketing (31), Social Media (28), Marketing Strategy (27).
Where the team actually sits
Happydemics people are concentrated in Île-de-France, France (27), Greater Paris Metropolitan Region (9), France (9), England, United Kingdom (3).
Search footprint
Happydemics attracts about 141 organic search visits a month, traffic worth roughly $1K a month if bought through ads. It gained 96 ranking keywords and lost 42 in the last period.
What employees say
- Compensation
- 4.00 / 5
- Career opportunities
- 4.00 / 5
- Senior management
- 3.60 / 5
- Work-life balance
- 3.90 / 5
Frequently asked
Happydemics has 86 employees as of September 2026.
Happydemics has raised $27M in total, most recently a Series B round in December 2024.
Happydemics was founded in 2015 by Tarek O..
Tarek O. (CEO + Founder of Happydemics) sits at the top of Happydemics's reporting structure, with 5 direct reports.
The most common previous employers of current Happydemics staff are Teads (2 people), Nielsen (2 people), EPITECH - European Institute of Technology (2 people).
Former Happydemics employees most often move to SNCF Connect & Tech (1), Datelia (1), Toucan (1).
At least 3 companies have a founder who previously worked at Happydemics, including Au Bout Du Champ, Datelia, Aquila.
Happydemics attracts about 141 organic search visits a month, worth roughly $1K a month in equivalent ad spend.
The most common skills among Happydemics staff are Microsoft Office, Project Management, English, Marketing, Management.
Happydemics staff are concentrated in Île-de-France, France (27), Greater Paris Metropolitan Region (9), France (9).
Happydemics has about 12 people in Sales, up 50% over the past year, as of September 2026.
Happydemics has about 11 people in Entrepreneurship, up 0% over the past year, as of September 2026.
Computed from 64 current and 78 former Happydemics profiles, as of September 2026. Source: Crustdata.
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