How many employees work at Serotonin?
Serotonin Inc has approximately 136 total employees worldwide as of March 2026, according to Revelio Labs workforce intelligence data. Serotonin’s total headcount has grown 80.2% from 75 employees in 2023 to 136 in 2026.
Is Serotonin hiring right now?
Yes, Serotonin is actively hiring. Serotonin had 36 active job postings in 2026, a 125.0% decline from 2025 — see job openings & hiring trends.
About Serotonin’s Workforce
Serotonin Inc is a Marketing and Advertising Services company that employs 136 people worldwide as of March 2026. It is the 5th-largest by headcount among its peers. Founded in 2020, the company is headquartered in Windermere, Florida.
Serotonin's workforce has grown 80.2% from 2023 to 2026, up 9.3% year over year in 2026. Its workforce is concentrated most in North America (87.7%), followed by Northern Europe (4.2%) and South Asia (3.7%).
Serotonin's functional groups are Finance and Operations (54.3%), Engineering (33.9%), and Sales and Marketing (11.7%), with Finance and Operations growing fastest (up 8.7%). The average salary is $119,489, ranging from a median of $121,000 in North America to $54,000 in Northern Europe, up 4.3% year over year in 2026.
Serotonin's active job postings fell 125.0% in 2026 to 36, with new postings per month climbing from 7 in 2023 to 21 in 2026. Overall employee sentiment is neutral but improving.
Sourced from Revelio Labs workforce data.
- Headquarters
- Windermere, Florida
- Founded
- 2020
- Industry
- Marketing and Advertising Services
- Employees
- 136
- YoY
- +9.3% (+12)
As of March 2026
Serotonin workforce metrics
Unlock hiring rate, attrition rate, and 12 additional workforce metrics for Serotonin. Compare to peers, export the dataset, and access the full quarterly history.
Unlock MetricsSerotonin Annual Employee Count (2023-2026)
- Serotonin had 136 employees in 2026, a 9.3% increase (+12) from 2025.
- Serotonin had 128 employees in 2025, a 3.6% increase (+12) from 2024.
- Serotonin had 116 employees in 2024, a 19.5% increase (+30) from 2023.
- Serotonin had 86 employees in 2023, a 0.8% decline (+17) from 2022.
Serotonin's total workforce has grown from 75 employees in 2023 to 136 in 2026.
Serotonin Inc quarterly employee count
| Year | Qtr | Employees | YoY Change | YoY % |
|---|---|---|---|---|
| 2026 | Q1 | 136 | +12 | +9.3% |
| 2025 | Q4 | 128 | +12 | +3.6% |
| 2025 | Q3 | 131 | +27 | +10.8% |
| 2025 | Q2 | 130 | +33 | +14.1% |
| 2025 | Q1 | 124 | +37 | +16.8% |
| 2024 | Q4 | 116 | +30 | +19.5% |
| 2024 | Q3 | 104 | +23 | +13.7% |
| 2024 | Q2 | 97 | +22 | +9.2% |
| 2024 | Q1 | 87 | +12 | -1.1% |
| 2023 | Q4 | 86 | +17 | -0.8% |
| 2023 | Q3 | 81 | +9 | -1.3% |
| 2023 | Q2 | 75 | +0 | -1.7% |
See Serotonin's complete headcount history, including quarterly breakdowns.
Get the DataSerotonin Employee Count by Region (2026)
North America accounts for the largest share of Serotonin's global workforce with approximately 88% of total employees, followed by Northern Europe and South Asia.
Serotonin employees by region
| Region | Employees | % of Total |
|---|---|---|
| North America | 117 | 87.7% |
| Northern Europe | 6 | 4.2% |
| South Asia | 5 | 3.7% |
| East Asia | 3 | 1.9% |
| South America | 2 | 1.2% |
| Central and Western Asia | 1 | 0.8% |
| Southeast Asia | 1 | 0.5% |
Drill into city-level data, hiring trends by region, and historic geographic shifts.
Unlock Geographic DataSerotonin Employee Count by Department (2026)
Serotonin's employee groups are Finance and Operations (54.3%), Engineering (33.9%), and Sales and Marketing (11.7%).
Serotonin employees by department
| Department | Employees | % of Total |
|---|---|---|
| Finance and Operations | 74 | 54.3% |
| Engineering | 46 | 33.9% |
| Sales and Marketing | 16 | 11.7% |
Compare Serotonin's department mix to industry peers.
See Full DataSerotonin Employee Salary by Region (2026)
Serotonin's average employee salary is $119,489 globally. Employees in North America receive the highest compensation. Pay is lowest in Northern Europe, at a median of $54,000.
Serotonin median employee salary by region (USD)
| Region | Median Salary |
|---|---|
| North America | $121,000 |
| Northern Europe | $54,000 |
Unlock salary by role, level, and city — and compare to Serotonin's industry peers.
Unlock Salary DataSerotonin Job Openings and Hiring Trends (2023-2026)
- Serotonin had 36 active job postings in 2026, a 125.0% decline (-62) from 2025.
- Serotonin had 98 active job postings in 2025, a 30.6% increase (+26) from 2024.
- Serotonin had 72 active job postings in 2024, a 184.0% increase (+69) from 2023.
- Serotonin had 3 active job postings in 2023, a 40.0% increase from 2022.
- Hiring velocity in 2026: 21 new roles/month, down from 69 in 2025 and 24 in 2024.
Serotonin's active job postings fell 125.0% in 2026 to 36, with new postings per month climbing from 7 in 2023 to 21 in 2026.
Track new postings per month, role-level demand, and hiring velocity vs. peers.
Unlock Hiring DataSerotonin Employee Sentiment (2026)
Revelio Labs tracks employee sentiment across Serotonin's workforce based on public professional data. Overall sentiment is neutral and has improved year over year in 2026.
Overall
Unlock the full sentiment breakdown by department, tenure, and trend over time.
Unlock SentimentSimilar Companies
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Frequently Asked Questions About Serotonin
- How fast is Serotonin growing?
- In 2026, Serotonin's headcount grew 9.3% to 136 employees, up from 124 in 2025.
- See the full headcount history
- Where are Serotonin employees located?
- Most Serotonin employees are based in North America (87.7% of headcount), followed by Northern Europe and South Asia.
- Explore where the workforce is based
- What is the average salary at Serotonin?
- The average employee salary at Serotonin is approximately $119.5k per year.
- Analyze the salary distribution
- How many new job postings does Serotonin open per year?
- In Q1 2026, Serotonin opened 62 new job postings. In 2025, Serotonin opened 826 new job postings — about 69 per month.
- Track hiring trends by role
- When was Serotonin founded and where is it headquartered?
- Serotonin was founded in 2020 and is headquartered in Windermere, Florida.
- Compare Serotonin to industry peers
Speak with a workforce expert about Serotonin.
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