Andesite
Andesite is a cybersecurity startup that builds products combining human and AI collaboration to defend against advanced threats. The company raised $38M in seed funding in February 2025 and employs 60 people.
The growth story
Andesite grew from 2 to 60 employees between 2023 and 2026, raising $38M along the way, most recently a Seed in February 2025.
About
Andesite develops cybersecurity tools designed to enhance how human analysts and AI systems work together to detect and respond to sophisticated attacks. Its products aim to improve threat defense by integrating machine capabilities with human expertise.
The company launched in 2023 and quickly secured $38M in seed funding from General Catalyst and Red Cell Partners. With 60 employees, it has built a team focused on engineering, which makes up a quarter of its workforce.
Founders and leadership
Engineering is the largest function at Andesite, with 15 employees. The company is led by founders with backgrounds in defending sensitive government networks, reflecting its focus on high-stakes cybersecurity.
The Andesite org chart
Brian Carbaugh (CEO and Co-Founder) leads 27 mapped leaders with 8 direct reports. Click +N to expand a team; names link to the person’s public profile.
Departments, and which ones grew
Headcount by function: Engineering 18 (0% YoY), Business Development 6 (0% YoY), Product Management 4 (+33% YoY), Entrepreneurship 4 (+100% YoY), Marketing 4 (0% YoY), Information Technology 4 (+33% YoY).
Talent flow
Andesite's team includes veterans from the Central Intelligence Agency, Microsoft, and Cisco, with multiple hires from each. Employees have also joined from cybersecurity firms like Netography and Rebellion Industries. George Mason University and the United States Air Force Academy are the top schools represented.
Most common previous employers of Andesite staff: Central Intelligence Agency (4), Netography (3), Microsoft (3), Qualtrics (3), Rebellion Industries (3), Cisco (2). Former Andesite employees most often moved to Elano (1), Self (1), Salish (1), Magical (1), Legos for Living Nonprofit (1).
Web traffic
Traffic mix: 0% direct, 0% search, 0% social, 0% paid.
What this company is made of
Most common skills at Andesite: Leadership (24), Cybersecurity (15), Python (Programming Language) (14), Network Security (12), Team Leadership (12), Security (11), Management (11), Project Management (11).
Where the team actually sits
Andesite people are concentrated in Washington DC-Baltimore Area (6), Washington, United States (5), New York, United States (5), Virginia, United States (5).
Search footprint
Andesite attracts about 66 organic search visits a month, traffic worth roughly $1K a month if bought through ads. It gained 16 ranking keywords and lost 4 in the last period.
What employees say
- Compensation
- 4.00 / 5
- Career opportunities
- 3.00 / 5
- Senior management
- 1.00 / 5
- Work-life balance
- 4.00 / 5
Frequently asked
Andesite has 60 employees as of September 2026.
Andesite has raised $38M in total, most recently a Seed round in February 2025.
Andesite was founded in 2023 by Grant Verstandig, Brian Carbaugh.
Brian Carbaugh (CEO and Co-Founder) sits at the top of Andesite's reporting structure, with 8 direct reports.
The most common previous employers of current Andesite staff are Central Intelligence Agency (4 people), Netography (3 people), Microsoft (3 people).
Former Andesite employees most often move to Elano (1), Self (1), Salish (1).
Andesite attracts about 66 organic search visits a month, worth roughly $1K a month in equivalent ad spend.
The most common skills among Andesite staff are Leadership, Cybersecurity, Python (Programming Language), Network Security, Team Leadership.
Andesite staff are concentrated in Washington DC-Baltimore Area (6), Washington, United States (5), New York, United States (5).
Andesite has about 18 people in Engineering, up 0% over the past year, as of September 2026.
Andesite has about 6 people in Business Development, up 0% over the past year, as of September 2026.
Computed from 51 current and 9 former Andesite profiles, as of September 2026. Source: Crustdata.
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