How many employees work at Castellum AI?
Castellum.AI has approximately 25 total employees worldwide as of March 2026, according to Revelio Labs workforce intelligence data. Castellum AI’s total headcount has grown 106.1% from 12 employees in 2023 to 25 in 2026.
Is Castellum AI hiring right now?
No, Castellum AI is not actively hiring. Castellum AI had 0 active job postings in 2026, a 0.0% no change from 2025 — see job openings & hiring trends.
About Castellum AI’s Workforce
Castellum.AI is an Information Technology Services company that employs 25 people worldwide as of March 2026. It is the 9th-largest by headcount among its peers. Founded in 2019, the company is headquartered in New York City, New York.
Castellum AI's workforce has grown 106.1% from 2023 to 2026, up 23.3% year over year in 2026. Its workforce is concentrated most in North America (94.5%), followed by Central America and the Caribbean (5.5%).
Castellum AI's functional groups are Engineering (51.9%), Finance and Operations (29.4%), and Sales and Marketing (18.7%), with Sales and Marketing growing fastest (up 68.1%). The average salary is $163,763, highest in North America at a median of $165,000, up 2.2% year over year in 2026.
Castellum AI's hiring activity held steady in 2026.
Sourced from Revelio Labs workforce data.
- Headquarters
- New York City, New York
- Founded
- 2019
- Industry
- Information Technology Services
- Employees
- 25
- YoY
- +23.3% (+9)
As of March 2026
Castellum AI workforce metrics
Unlock hiring rate, attrition rate, and 12 additional workforce metrics for Castellum AI. Compare to peers, export the dataset, and access the full quarterly history.
Unlock MetricsCastellum AI Annual Employee Count (2023-2026)
- Castellum AI had 25 employees in 2026, a 23.3% increase (+9) from 2025.
- Castellum AI had 21 employees in 2025, a 12.7% increase (+5) from 2024.
- Castellum AI had 16 employees in 2024, a 5.1% increase (+1) from 2023.
- Castellum AI had 15 employees in 2023, a 20.2% increase (+6) from 2022.
Castellum AI's total workforce has grown from 12 employees in 2023 to 25 in 2026.
Castellum.AI quarterly employee count
| Year | Qtr | Employees | YoY Change | YoY % |
|---|---|---|---|---|
| 2026 | Q1 | 25 | +9 | +23.3% |
| 2025 | Q4 | 21 | +5 | +12.7% |
| 2025 | Q3 | 21 | +3 | +6.3% |
| 2025 | Q2 | 16 | +0 | -0.3% |
| 2025 | Q1 | 16 | +2 | -0.4% |
| 2024 | Q4 | 16 | +1 | +5.1% |
| 2024 | Q3 | 18 | +2 | +11.2% |
| 2024 | Q2 | 16 | +4 | +23.3% |
| 2024 | Q1 | 14 | +5 | +27.5% |
| 2023 | Q4 | 15 | +6 | +20.2% |
| 2023 | Q3 | 16 | +5 | +9.5% |
| 2023 | Q2 | 12 | +2 | -18.4% |
See Castellum AI's complete headcount history, including quarterly breakdowns.
Get the DataCastellum AI Employee Count by Region (2026)
North America accounts for the largest share of Castellum AI's global workforce with approximately 95% of total employees, followed by Central America and the Caribbean.
Castellum AI employees by region
| Region | Employees | % of Total |
|---|---|---|
| North America | 23 | 94.5% |
| Central America and the Caribbean | 1 | 5.5% |
Drill into city-level data, hiring trends by region, and historic geographic shifts.
Unlock Geographic DataCastellum AI Employee Count by Department (2026)
Castellum AI's employee groups are Engineering (51.9%), Finance and Operations (29.4%), and Sales and Marketing (18.7%).
Castellum AI employees by department
| Department | Employees | % of Total |
|---|---|---|
| Engineering | 13 | 51.9% |
| Finance and Operations | 7 | 29.4% |
| Sales and Marketing | 5 | 18.7% |
Compare Castellum AI's department mix to industry peers.
See Full DataCastellum AI Employee Salary by Region (2026)
Castellum AI's average employee salary is $163,763 globally. Employees in North America receive the highest compensation.
Castellum AI median employee salary by region (USD)
| Region | Median Salary |
|---|---|
| North America | $165,000 |
Unlock salary by role, level, and city — and compare to Castellum AI's industry peers.
Unlock Salary DataCastellum AI Job Openings and Hiring Trends (2023-2026)
- Castellum AI had 0 active job postings in 2026, a 0% no change (-4) from 2025.
- Castellum AI had 4 active job postings in 2025, a 200.0% increase (+4) from 2024.
- Castellum AI had 0 active job postings in 2024, a 200.0% decline (-1) from 2023.
- Castellum AI had 1 active job postings in 2023, a 200.0% increase from 2022.
- Hiring velocity in 2026: 0 new roles/month, down from 2 in 2025 and 0 in 2024.
Castellum AI's hiring activity held steady in 2026.
Track new postings per month, role-level demand, and hiring velocity vs. peers.
Unlock Hiring DataSimilar Companies
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Frequently Asked Questions About Castellum AI
- How fast is Castellum AI growing?
- In 2026, Castellum AI's headcount grew 23.3% to 25 employees, up from 16 in 2025.
- See the full headcount history
- Where are Castellum AI employees located?
- Most Castellum AI employees are based in North America (94.5% of headcount), followed by Central America and the Caribbean.
- Explore where the workforce is based
- What is the average salary at Castellum AI?
- The average employee salary at Castellum AI is approximately $163.8k per year.
- Analyze the salary distribution
- How many new job postings does Castellum AI open per year?
- In Q1 2026, Castellum AI opened 0 new job postings. In 2025, Castellum AI opened 22 new job postings — about 2 per month.
- Track hiring trends by role
- When was Castellum AI founded and where is it headquartered?
- Castellum AI was founded in 2019 and is headquartered in New York City, New York.
- Compare Castellum AI to industry peers
Speak with a workforce expert about Castellum AI.
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