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Nullify

Category: AI in Cybersecurity

An autonomous AI security engineering platform that automates the detection, triaging, and remediation of software vulnerabilities within the developer workflow. Nullify was founded in 2022. The company is led by Shantanu Kulkarni. Based in San Francisco, California, United States. Team size: 11-50. Total funding raised: $16.9M. Latest round: Seed ($12.5M, Feb 2025). Key investors include SYN Ventures, Black Nova Venture Capital, Two Sigma Ventures, Root Ventures, OIF Ventures.

Founded
2022
Headquarters
San Francisco, California, United States
Team size
11-50
Total funding
$16.9M

Value proposition

Acts as an 'AI Security Engineer' that works directly in CI/CD pipelines to solve the global security talent gap by automating manual AppSec tasks and reducing developer friction.

Products and solutions

Autonomous AI AppSec Engineer, Automated Vulnerability Remediation Engine, AI-Powered Security Triaging System, CI/CD Security Integration Suite, Security Policy-as-Code Automation

Unique value

Moves beyond traditional 'scanning' tools by acting as an autonomous 'AI workforce' that can reason through vulnerabilities and generate code fixes rather than just flagging issues.

Target customer

Enterprise software development teams, DevSecOps departments, and security-conscious mid-to-large scale organizations facing security talent shortages.

Industries served

Cybersecurity, Software Development (SaaS), Financial Services & FinTech, Cloud Infrastructure, Enterprise Technology

Technology advantage

Utilizes proprietary LLMs specifically fine-tuned for security operations and code analysis, enabling high-context vulnerability management with significantly lower false-positive rates than legacy tools.

How they differentiate

Nullify differentiates by moving beyond passive scanning to 'autonomous remediation.' While legacy tools flag vulnerabilities, Nullify's AI agents act as virtual security engineers that triages, reasons through context, and generates code fixes directly within the developer's CI/CD pipeline.

Main competitors

Snyk, Aikido Security, Dazz, Socket

Key partnerships

SYN Ventures (Lead Investor), Black Nova Venture Capital, University of New South Wales (UNSW) - Academic and Research roots, Major DevOps Platforms (GitHub, GitLab, Jira, Slack, and Atlassian ecosystem integrations), Root Ventures and Two Sigma Ventures

Notable customers

Mantel Group, CMD Solutions, University of New South Wales (UNSW)

Major milestones

Raised $1.1M Pre-Seed in May 2023 to build the core AI engine., Secured $5.2M Seed led by Root Ventures in March 2024., Relocated HQ to San Francisco, CA following 2024 round., Announced $12.5M Seed round led by SYN Ventures in February 2026 to scale the AI workforce globally.

Growth metrics

Scaled from Pre-Seed to $16.9M total funding; saved over 48,000 hours of manual work, auto-resolved over 450 vulnerabilities, ~90% merge-ready rate.

Market positioning

AI-native AppSec disruptor targeting the 'security talent gap' by automating manual security engineering workflows.

Geographic focus

North America (HQ in San Francisco), Australia (Sydney office), and Asia-Pacific.

Patents and IP

Proprietary autonomous agent architecture and specialized security LLM weights (specific public patent filings not disclosed as of Feb 2025).

About Shantanu Kulkarni

Shantanu (Shan) Kulkarni is a specialized security engineer with a pedigree from Atlassian, where he focused on product security and cloud infrastructure. He previously served as a Cloud Security Engineer at CMD Solutions (acquired by Mantel Group) and was a Cybersecurity Researcher and Tutor at the University of New South Wales (UNSW), where he co-developed cloud security curricula. His background combines deep technical security research with enterprise-scale engineering experience.

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