How many employees work at Firefly Bio?
Firefly Bio, Inc. has approximately 24 total employees worldwide as of March 2026, according to Revelio Labs workforce intelligence data. Firefly Bio’s total headcount has grown 76.0% from 13 employees in 2023 to 24 in 2026.
Is Firefly Bio hiring right now?
No, Firefly Bio is not actively hiring. Firefly Bio had 0 active job postings in 2026, a 200.0% decline from 2025 — see job openings & hiring trends.
About Firefly Bio’s Workforce
Firefly Bio, Inc. is a Biotech and Healthcare Services company that employs 24 people worldwide as of March 2026. It is the 9th-largest by headcount among its peers. Founded in 2022, the company is headquartered in South San Francisco, California.
Firefly Bio's workforce has grown 76.0% from 2023 to 2026, though it is down 26.2% year over year in 2026. Its workforce is concentrated most in North America (96.1%), followed by South Asia (3.9%).
Firefly Bio's functional groups are Engineering (56.3%), Finance and Operations (27.3%), and Sales and Marketing (16.4%), with Sales and Marketing growing fastest (up 18.6%). The average salary is $153,463, highest in North America at a median of $153,000, down 10.0% year over year in 2026.
Firefly Bio's active job postings fell 200.0% in 2026 to 0, with new postings per month cooling from 2 in 2023 to 0 in 2026. Overall employee sentiment is positive and broadly stable.
Sourced from Revelio Labs workforce data.
- Headquarters
- South San Francisco, California
- Founded
- 2022
- Industry
- Biotech and Healthcare Services
- Employees
- 24
- YoY
- -26.2% (-5)
As of March 2026
Firefly Bio workforce metrics
Unlock hiring rate, attrition rate, and 12 additional workforce metrics for Firefly Bio. Compare to peers, export the dataset, and access the full quarterly history.
Unlock MetricsFirefly Bio Annual Employee Count (2023-2026)
- Firefly Bio had 24 employees in 2026, a 26.2% decline (-5) from 2025.
- Firefly Bio had 24 employees in 2025, a 23.2% decline (-3) from 2024.
- Firefly Bio had 27 employees in 2024, a 24.0% increase (+12) from 2023.
- Firefly Bio had 15 employees in 2023, a 23.9% increase (+6) from 2022.
Firefly Bio's total workforce has grown from 13 employees in 2023 to 24 in 2026.
Firefly Bio, Inc. quarterly employee count
| Year | Qtr | Employees | YoY Change | YoY % |
|---|---|---|---|---|
| 2026 | Q1 | 24 | -5 | -26.2% |
| 2025 | Q4 | 24 | -3 | -23.2% |
| 2025 | Q3 | 24 | -2 | -14.5% |
| 2025 | Q2 | 30 | +7 | +12.7% |
| 2025 | Q1 | 29 | +10 | +17.6% |
| 2024 | Q4 | 27 | +12 | +24.0% |
| 2024 | Q3 | 26 | +12 | +14.3% |
| 2024 | Q2 | 23 | +10 | +21.0% |
| 2024 | Q1 | 19 | +7 | +24.6% |
| 2023 | Q4 | 15 | +6 | +23.9% |
| 2023 | Q3 | 14 | +9 | +29.3% |
| 2023 | Q2 | 13 | +7 | +28.6% |
See Firefly Bio's complete headcount history, including quarterly breakdowns.
Get the DataFirefly Bio Employee Count by Region (2026)
North America accounts for the largest share of Firefly Bio's global workforce with approximately 96% of total employees, followed by South Asia.
Firefly Bio employees by region
| Region | Employees | % of Total |
|---|---|---|
| North America | 23 | 96.1% |
| South Asia | 1 | 3.9% |
Drill into city-level data, hiring trends by region, and historic geographic shifts.
Unlock Geographic DataFirefly Bio Employee Count by Department (2026)
Firefly Bio's employee groups are Engineering (56.3%), Finance and Operations (27.3%), and Sales and Marketing (16.4%).
Firefly Bio employees by department
| Department | Employees | % of Total |
|---|---|---|
| Engineering | 13 | 56.3% |
| Finance and Operations | 6 | 27.3% |
| Sales and Marketing | 4 | 16.4% |
Compare Firefly Bio's department mix to industry peers.
See Full DataFirefly Bio Employee Salary by Region (2026)
Firefly Bio's average employee salary is $153,463 globally. Employees in North America receive the highest compensation.
Firefly Bio median employee salary by region (USD)
| Region | Median Salary |
|---|---|
| North America | $153,000 |
Unlock salary by role, level, and city — and compare to Firefly Bio's industry peers.
Unlock Salary DataFirefly Bio Job Openings and Hiring Trends (2023-2026)
- Firefly Bio had 0 active job postings in 2026, a 200.0% decline (-1) from 2025.
- Firefly Bio had 1 active job postings in 2025, a 133.3% decline (-4) from 2024.
- Firefly Bio had 5 active job postings in 2024, a 57.1% decline (-4) from 2023.
- Firefly Bio had 9 active job postings in 2023, a 200.0% increase from 2022.
- Hiring velocity in 2026: 0 new roles/month, down from 4 in 2025 and 1 in 2024.
Firefly Bio's hiring is slowing: active job postings fell 200.0% in 2026 to 0, with new postings per month cooling from 2 in 2023 to 0 in 2026.
Track new postings per month, role-level demand, and hiring velocity vs. peers.
Unlock Hiring DataFirefly Bio Employee Sentiment (2026)
Revelio Labs tracks employee sentiment across Firefly Bio's workforce based on public professional data. Overall sentiment is positive and has held steady year over year in 2026.
Overall
Unlock the full sentiment breakdown by department, tenure, and trend over time.
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Frequently Asked Questions About Firefly Bio
- How fast is Firefly Bio growing?
- In 2026, Firefly Bio's headcount shrank 26.2% to 24 employees, down from 29 in 2025.
- See the full headcount history
- Where are Firefly Bio employees located?
- Most Firefly Bio employees are based in North America (96.1% of headcount), followed by South Asia.
- Explore where the workforce is based
- What is the average salary at Firefly Bio?
- The average employee salary at Firefly Bio is approximately $153.5k per year.
- Analyze the salary distribution
- How many new job postings does Firefly Bio open per year?
- In Q1 2026, Firefly Bio opened 0 new job postings. In 2025, Firefly Bio opened 47 new job postings — about 4 per month.
- Track hiring trends by role
- When was Firefly Bio founded and where is it headquartered?
- Firefly Bio was founded in 2022 and is headquartered in South San Francisco, California.
- Compare Firefly Bio to industry peers
Speak with a workforce expert about Firefly Bio.
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