Todyl
Todyl sells cybersecurity software to businesses through a single-agent platform. The Denver-based company has 120 employees and raised $84M, most recently in a Series B round in February 2024.
The growth story
Todyl grew from 12 to 120 employees between 2021 and 2026, raising $84M along the way, most recently a Series B in February 2024.
About
Todyl provides cybersecurity software that businesses can customize through modular capabilities. Its platform consolidates multiple security functions into a single agent, aiming to simplify enterprise security management.
The company has raised $84M across funding rounds, including a Series B in early 2024. With 120 employees, it draws engineering talent from major tech and security firms like IBM and Cisco.
Founders and leadership
Engineering is Todyl's largest function, accounting for 37 of its 120 employees. The company operates with a relatively flat structure, evidenced by a median tenure of just one year.
The Todyl org chart
John Nellen (Founder & CEO) leads 45 mapped leaders with 7 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 41 (-7% YoY), Sales 20 (-26% YoY), Information Technology 16 (+7% YoY), Business Development 9 (-25% YoY), Marketing 9 (0% YoY), Customer Success and Support 6 (-14% YoY).
Talent flow
Todyl recruits heavily from IBM, the US Army, and cybersecurity firms like Red Canary and Cisco. Alumni often move to other security companies, with SentinelOne and Slide being top destinations.
Most common previous employers of Todyl staff: IBM (8), US Army (7), Red Canary, a Zscaler company (5), Cisco (4), Next Jump (4), TrendAI (3). Former Todyl employees most often moved to SentinelOne (4), Slide (3), Pax8 (3), Amikoo | MuukTest by MuukLabs (2), Tailscale (2), Thread (2).
Alumni worth knowing
The Todyl mafia
Four Todyl alumni have founded companies, including Cork, which has grown to 61 employees, and TRAVV, a smaller startup with 6 staff.
4Dan Candee, was Chief Business Officer until 2024Zachary Runyan, was Lead Software Engineer until 2022David Langlands, was Chief Security Officer until 2026Walt Register, was Partner Success Lead until 2023Hiring now
Web traffic
Traffic mix: 63% direct, 19% search, 12% social, 1% paid.
What this company is made of
Most common skills at Todyl: Leadership (49), Cybersecurity (41), Microsoft Office (38), Customer Service (38), Network Security (37), Python (Programming Language) (36), Communication (36), Management (36).
Where the team actually sits
Todyl people are concentrated in Colorado, United States (53), Georgia, United States (19), Denver Metropolitan Area (18), New York, United States (3).
Search footprint
Todyl attracts about 1,195 organic search visits a month, traffic worth roughly $14K a month if bought through ads. It gained 247 ranking keywords and lost 191 in the last period.
What employees say
- Compensation
- 3.60 / 5
- Career opportunities
- 3.80 / 5
- Senior management
- 3.60 / 5
- Work-life balance
- 3.50 / 5
Frequently asked
Todyl has 120 employees as of September 2026.
Todyl has raised $84M in total, most recently a Series B round in February 2024.
Todyl was founded in 2015 by Darrin Swan, John Nellen, James Pellizzi.
John Nellen (Founder & CEO) sits at the top of Todyl's reporting structure, with 7 direct reports.
The most common previous employers of current Todyl staff are IBM (8 people), US Army (7 people), Red Canary, a Zscaler company (5 people).
Former Todyl employees most often move to SentinelOne (4), Slide (3), Pax8 (3).
At least 4 companies have a founder who previously worked at Todyl, including Cork, TRAVV, Grant Llama.
Todyl attracts about 1,195 organic search visits a month, worth roughly $14K a month in equivalent ad spend.
The most common skills among Todyl staff are Leadership, Cybersecurity, Microsoft Office, Customer Service, Network Security.
Todyl staff are concentrated in Colorado, United States (53), Georgia, United States (19), Denver Metropolitan Area (18).
Todyl has about 41 people in Engineering, down 7% over the past year, as of September 2026.
Todyl has about 20 people in Sales, down 26% over the past year, as of September 2026.
Computed from 108 current and 116 former Todyl profiles, as of September 2026. Source: Crustdata.
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