How many employees work at IRSN?
Instit Radioprotection Surete Nucleaire has approximately 749 total employees worldwide as of March 2026, according to Revelio Labs workforce intelligence data. IRSN’s total headcount has declined 60.3% from 1,884 employees in 2023 to 749 in 2026.
Is IRSN hiring right now?
Yes, IRSN is actively hiring. IRSN had 151 active job postings in 2026, a 27.4% decline from 2025 — see job openings & hiring trends.
About IRSN’s Workforce
Instit Radioprotection Surete Nucleaire is a Research and Development company that employs 749 people worldwide as of March 2026. It is the 11th-largest by headcount among its peers. Founded in 2002, the company is headquartered in Fontenay-aux-Roses, France.
IRSN's workforce has declined 60.3% from 2023 to 2026, down 2.6% year over year in 2026. It fell to a low of 749 in 2026 Q1 before recovering. Its workforce is concentrated most in Western Europe (97.6%), followed by North America (1.4%) and South Asia (0.7%).
IRSN's functional groups are Finance and Operations (47.7%), Sales and Marketing (28.2%), and Engineering (24.1%). The average salary is $59,199, ranging from a median of $78,000 in North America to $30,000 in South Asia, up 0.9% year over year in 2026.
IRSN's active job postings fell 27.4% in 2026 to 151, with new postings per month cooling from 78 in 2023 to 76 in 2026. Overall employee sentiment is positive but declining.
Sourced from Revelio Labs workforce data.
- Headquarters
- Fontenay-aux-Roses, France
- Founded
- 2002
- Industry
- Research and Development
- Employees
- 749
- YoY
- -2.6% (-41)
As of March 2026
IRSN workforce metrics
Unlock hiring rate, attrition rate, and 12 additional workforce metrics for IRSN. Compare to peers, export the dataset, and access the full quarterly history.
Unlock MetricsIRSN Annual Employee Count (2023-2026)
- IRSN had 749 employees in 2026, a 2.6% decline (-41) from 2025.
- IRSN had 752 employees in 2025, a 3.4% decline (-72) from 2024.
- IRSN had 824 employees in 2024, a 5.0% decline (-930) from 2023.
- IRSN had 1,754 employees in 2023, a 3.4% increase (+16) from 2022.
IRSN's total workforce has declined from 1,884 employees in 2023 to 749 in 2026.
Instit Radioprotection Surete Nucleaire quarterly employee count
| Year | Qtr | Employees | YoY Change | YoY % |
|---|---|---|---|---|
| 2026 | Q1 | 749 | -41 | -2.6% |
| 2025 | Q4 | 752 | -72 | -3.4% |
| 2025 | Q3 | 756 | -913 | -5.8% |
| 2025 | Q2 | 774 | -1,089 | -15.3% |
| 2025 | Q1 | 790 | -1,076 | -13.4% |
| 2024 | Q4 | 824 | -930 | -5.0% |
| 2024 | Q3 | 1,669 | -97 | +0.5% |
| 2024 | Q2 | 1,863 | -21 | +3.2% |
| 2024 | Q1 | 1,866 | -38 | +2.2% |
| 2023 | Q4 | 1,754 | +16 | +3.4% |
| 2023 | Q3 | 1,766 | +30 | +2.2% |
| 2023 | Q2 | 1,884 | +46 | +2.9% |
See IRSN's complete headcount history, including quarterly breakdowns.
Get the DataIRSN Employee Count by Region (2026)
Western Europe accounts for the largest share of IRSN's global workforce with approximately 98% of total employees, followed by North America and South Asia.
IRSN employees by region
| Region | Employees | % of Total |
|---|---|---|
| Western Europe | 724 | 97.6% |
| North America | 10 | 1.4% |
| South Asia | 5 | 0.7% |
| South America | 2 | 0.2% |
| Pacific Islands | 1 | 0.2% |
Drill into city-level data, hiring trends by region, and historic geographic shifts.
Unlock Geographic DataIRSN Employee Count by Department (2026)
IRSN's employee groups are Finance and Operations (47.7%), Sales and Marketing (28.2%), and Engineering (24.1%).
IRSN employees by department
| Department | Employees | % of Total |
|---|---|---|
| Finance and Operations | 353 | 47.7% |
| Sales and Marketing | 209 | 28.2% |
| Engineering | 179 | 24.1% |
Compare IRSN's department mix to industry peers.
See Full DataIRSN Employee Salary by Region (2026)
IRSN's average employee salary is $59,199 globally. Employees in North America receive the highest compensation, with median pay approximately 1.3x the global average. Pay is lowest in South Asia, at a median of $30,000.
IRSN median employee salary by region (USD)
| Region | Median Salary |
|---|---|
| North America | $78,000 |
| Western Europe | $49,000 |
| South Asia | $30,000 |
Unlock salary by role, level, and city — and compare to IRSN's industry peers.
Unlock Salary DataIRSN Job Openings and Hiring Trends (2023-2026)
- IRSN had 151 active job postings in 2026, a 27.4% decline (-5) from 2025.
- IRSN had 156 active job postings in 2025, a 97.7% decline (-298) from 2024.
- IRSN had 454 active job postings in 2024, a 88.3% increase (+278) from 2023.
- IRSN had 176 active job postings in 2023, a 82.7% increase from 2022.
- Hiring velocity in 2026: 76 new roles/month, down from 148 in 2025 and 202 in 2024.
IRSN's hiring is slowing: active job postings fell 27.4% in 2026 to 151, with new postings per month cooling from 78 in 2023 to 76 in 2026.
Track new postings per month, role-level demand, and hiring velocity vs. peers.
Unlock Hiring DataIRSN Employee Sentiment (2026)
Revelio Labs tracks employee sentiment across IRSN's workforce based on public professional data. Overall sentiment is positive and has declined 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 IRSN
- How fast is IRSN growing?
- In 2026, IRSN's headcount shrank 2.6% to 749 employees, down from 790 in 2025.
- See the full headcount history
- Where are IRSN employees located?
- Most IRSN employees are based in Western Europe (97.6% of headcount), followed by North America and South Asia.
- Explore where the workforce is based
- What is the average salary at IRSN?
- The average employee salary at IRSN is approximately $59.2k per year.
- Analyze the salary distribution
- How many new job postings does IRSN open per year?
- In Q1 2026, IRSN opened 228 new job postings. In 2025, IRSN opened 1,779 new job postings — about 148 per month.
- Track hiring trends by role
- When was IRSN founded and where is it headquartered?
- IRSN was founded in 2002 and is headquartered in Fontenay-aux-Roses, France.
- Compare IRSN to industry peers
Speak with a workforce expert about IRSN.
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