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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 Sydney, Australia. Team size: 11-50. Total funding raised: $18.8M. Latest round: Seed ($12.5M, Feb 2025). Key investors include ["Blackbird Ventures","Root Ventures","Two Sigma Ventures","OIF Ventures","Blacknova Ventures","CyRise"].

Founded
2022
Headquarters
Sydney, Australia
Team size
11-50
Total funding
$18.8M

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

["Blackbird Ventures (Lead Investor)","University of New South Wales (UNSW) - Academic and Research roots","Major DevOps Platforms (GitHub, GitLab, 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.","Announced $12.5M Seed extension/new round led by Blackbird Ventures in February 2025 to scale the 'AI Security Workforce' globally."]

Growth metrics

Scaled from Pre-Seed to $18.8M total funding in under 24 months; expanded team to 25-30 employees.

Market positioning

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

Geographic focus

Australia (HQ), North America (Primary expansion market), 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.

Official website: