Nucleus Security
Vulnerability Management
$86.8Mtotal raised · 5 rounds on record
6open roles
$20Mlatest round · Venture round · Feb 2026 · 8 mo ago
1backers · Lead Edge Capital
Overview
Nucleus Security is a cybersecurity software company that provides a risk-based vulnerability and exposure management platform for enterprise and government organizations. Headquartered in Sarasota, Florida, the company enables security teams to centralize and automate vulnerability data from various scanners and threat intelligence sources. Its unified ecosystem streamlines risk prioritization and remediation workflows, helping enterprises efficiently mitigate critical cyber exposures.
Funding and backers
Total raised
$86.8M
5 rounds on record
Latest round
$20M
Venture round · Feb 2026 · 8 mo ago
Team
65
US Form 5500 (plan participants) · Dec 2024
Hiring now
10
+4 posted in 30 days
Grants
$49k
1 grant · CORDIS
Backers
1
Lead Edge Capital
The money's age
Fresh money
8 months since the last round · and hiring
Momentum
51/100
hiring for its size, in the news, fresh money
Last sign of life
this month
a posting or a news item
The story so fareach stage dated by its source: the company's releases, the press, registers, filings
Aug 25
Launched Nucleus Security launches Helix, an AI engine for exposure management · SiliconANGLE
Feb 11
Raised a round Venture round $20M · SiliconANGLE
Sep 3, 2025
Launched Nucleus Security Introduces AI-Powered Threat Intelligence Purpose-Built for Vulnerability Management Teams · streetinsider.com
Feb 13, 2024
Raised a round Series B $43M
Mar 24, 2022
Board appointment Avery Rosin, Director · SEC Form D
Mar 18, 2022
Raised a round Venture round $20.3M · SEC Form D
Jun 1, 2021
Won a grant $49k · CORDIS
Feb 26, 2021
Raised a round Venture round $3.5M · SEC Form D
2019
Founded
Tractionpublic signals, read monthly
Web presence
top 0.03%
of 133.2M domains by links, Common Crawl
Funding rounds
| Round | Date | Amount | Investors | Source |
|---|---|---|---|---|
| Venture round | Feb 2026 | $20M | — | SiliconANGLE |
| Series B | Feb 2024 | $43M | — | helpnetsecurity.com |
| Venture round | Mar 2022 | $20.3M | — | SEC Form D |
| Grant | Jun 2021 | $49k | — | CORDIS |
| Venture round | Feb 2021 | $3.5M | — | SEC Form D |
Registers and programsofficial lists and records that name the company
| Legal entity | Nucleus Security, Inc. | SEC Form D |
Founders and leadersfrom filings, registers and the company's site
Stephen CarterExecutive Officer, DirectorSEC Form D
Backed byfrom the funds' portfolios and accelerator catalogs
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Jobs
Remote (likely United States) · 5+ years exp · Master's Degree
PHP
Laminas
Composer
AI/ML
AI Agents
DevOps
Rest API
Azure DevOps
Azure
CI/CD
Git
Docker
Platform Engineering
Amazon S3
Linux
Cybersecurity
Qualys Cloud Platform
Wiz
Management
Jira
ServiceNow
Agile
Scrum
Apply
Remote (likely United States) · 10+ years exp
Python
Java
SQL
Spark
Flink
LLM
DevOps
Linux
Management
Agile
Scrum
Apply
Remote (likely United States) · 5+ years exp
SQL
Model Context Protocol
Function Calling
AI Agents
LLM
Agentic Workflows
Apply
≈ $106k – $211k per year (Estimated) · Remote (United States) · 4+ years exp
Apply
Remote (Australia) · Internship · Bachelor's Degree
Python
JavaScript
PHP
TypeScript
MySQL
Frontend
React.js
DevOps
Rest API
CI/CD
Git
Linux
Analytics
ETL/ELT
Management
Agile
Apply
≈ $106k – $211k per year (Estimated) · Remote (United States) · 4+ years exp
Apply
Salary insights
Compensation ranges based on this company's open jobs
Median
$85k
Typical range
$85k
Open positions
1
1
Jobs
Junior
100%
| Level | Jobs | Median | Typical range |
|---|---|---|---|
| Junior | 1 | $85k | $85k |
Highest paying role
Business Development Representative - Nucleus Security
$85k
Normalized to USD per year
Growth
Hiring Momentum
55/100
Growing
Open positions
9
3 opened / 2 closed in 30 days
Median time-to-fill
23 days
faster than 54% of the market
ATS activity
Every ~7 hours
Today
Hiring Dynamics
0%
Hiring Focus
The percentage next to each role is its share of the company's job openings over the last 90 days; the arrow shows the shift versus the previous period.
Product
20% ▲
Backend
13%
DevOps
13% ▼
Marketing
13%
Sales
13%
Data Science
7% ▲
Activity Timeline
+3 jobs in a week
Nov 2026
Added Wiz to stack
Nov 2026
Added ServiceNow to stack
Nov 2026
Added Qualys Cloud Platform to stack
Nov 2026
Added Platform Engineering to stack
Nov 2026
Added Laminas to stack
Nov 2026
Added Composer to stack
Nov 2026
Added Azure DevOps to stack
Nov 2026
Added Amazon S3 to stack
Nov 2026
Added Spark to stack
Nov 2026
Added Scrum to stack
Nov 2026
Added Flink to stack
Nov 2026
Financials
Total raised
$86.8M
Latest round
Venture - Series Unknown
Funding rounds
5
People
Stephen Carter
Executive Officer, Director
Nicholas Fleming
Director
Michael Nixon
Director
Ryan Kruizenga
Director
Scott Kuffer
Director
Avery Rosin
Director
Names and roles come from public filings, company registers and the company's own site. Is this you? Correct or remove · How we handle this data
Tech stack
Technologies named in job postings at Nucleus Security over the last 12 months, by layer, with the share of postings for each.
Technologies in use
67
Postings analysed
11
Stack modernity
88/100AI adopter
Languages
Python55%
SQL27%
PHP27%
Java18%
Frameworks & libraries
Flink9%
Playwright9%
React.js9%
Selenium9%
Databases
MySQL9%
Cloud & platforms
Linux36%
AWS18%
GitHub18%
GitLab18%
AI & ML
LLM27%
ChatGPT9%
Claude9%
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Full Nucleus Security tech stack
67 technologies · by team · pay by technology · changes · similar stacks
Connections
List
Graph
Found in company registers, site code, DNS and hiring. Each connection shows how sure we are and the evidence, with its source and date.
Shared investors
Lead Edge CapitalVia a fund
Click a company to open it. Dashed lines are likely connections. The second step of the network is part of the Pro plan.
Owner
Same company
Same group
Likely
News
Nucleus Security Helix Adds Agentic AI to Exposure Management
Nucleus Security launches Helix, an agentic AI engine designed to improve exposure discovery, remediation workflows, and security operations.
Read more
Report
Nucleus Security launches Helix, an AI engine for exposure management
Nucleus Security launches Helix, an AI engine for exposure management - SiliconANGLE
Read more
Report
Nucleus wants to get ahead of scanners on new vulnerabilities
Nucleus Security is adding AI-driven exposure discovery and an agentic AI interface to help security teams investigate newly disclosed vulnerabilities and build remediation workflows before traditional scanner coverage is available.
Read more
Report
BOD 26-04 isn't a scoring upgrade. It's an audit of whether you can actually fix things. - Federal News Network
When automated threat actors weaponize vulnerabilities in hours, the ultimate bottleneck is not how fast we can scan, it's how fast we can coordinate a fix.
Read more
Report
How To Build A Smarter, Safer Hardware Lifecycle Strategy
Replacing hardware on a fixed schedule can drive up costs and create serious questions about data protection, system reliability and environmental sustainability.
Read more
Report
The End of Centralized Enrichment: What NIST's NVD Shift Means for Vulnerability Management
Read more
Report
Nucleus Security adds $20M in funding to support enterprise exposure management demand
Nucleus Security adds $20M in funding to support enterprise exposure management demand - SiliconANGLE
Read more
Report
Nucleus Security Introduces AI-Powered Threat Intelligence Purpose-Built for Vulnerability Management Teams
Read more
Report
Nucleus Security announces Cloud-Native Vulnerability Exposure Management platform
This expansion of the Nucleus Security platform delivers the business-aligned risk and ownership visibility needed to prioritize, assign, and mitigate exposures at scale.
Read more
Report
Nucleus Security: Funding Raised From Dcode Capital
Nucleus Security, the enterprise leader in unified vulnerability management, announced an investment by Dcode Capital, a growth-stage venture capital firm backed by J.P. Morgan Asset Management. Dcode Capital's funding follows Nucleus Security's FedRAMP M
Read more
Report
Show more news
Offices
Where the company hires and what each office is for
Cities
1
Hiring now
0
Countries
1
Sarasota
United States
HQ
Customer Support Portal
50-200 est. staff
71 Alafia Drive Sarasota, FL 34240