Staff Attack Engineer, AI/LLM

Horizon3.ai
United States
Workplace: RemoteFull timeFunction: Data Science & Machine LearningSkills: ["Self-motivation","Ownership","Proactivity","Problem-solving","Communication"]

Staff Attack Engineer specializing in AI/LLM security responsible for breaking AI and agentic systems, translating research into automated, repeatable attack modules in NodeZero, and driving offensive capabilities for AI/LLM. You will design prompt injection, conduct tool-use exploits, attack AI infrastructure, research model and supply-chain attacks, and shape threat modeling for enterprise deployments in a fully remote, security-focused product environment.

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FursaFursa
Horizon3.ai
Horizon3.ai
5 months ago

Staff Attack Engineer, AI/LLM

✓ Verified Job

Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI
Last checked: 4 hours agoStatus: Live

Job Summary

Staff Attack Engineer specializing in AI/LLM security responsible for breaking AI and agentic systems, translating research into automated, repeatable attack modules in NodeZero, and driving offensive capabilities for AI/LLM. You will design prompt injection, conduct tool-use exploits, attack AI infrastructure, research model and supply-chain attacks, and shape threat modeling for enterprise deployments in a fully remote, security-focused product environment.
Location: United States
Workplace: Remote
Employment Type: Full time
Job Function: Data Science & Machine Learning

Key Responsibilities

  • •Break AI and agentic systems and translate that research into automated, repeatable attack modules for NodeZero.
  • •Design and execute prompt injection and defense evasion attacks, focusing on generalized, reusable patterns.
  • •Conduct tool-use exploitation, abusing LLM agents’ access to code, file systems, APIs, and databases for attacker-realistic outcomes.
  • •Target AI infrastructure (model serving, training pipelines, vector databases, GPU/MLOps tooling) with an understanding of real-world enterprise deployments and misconfigurations.
  • •Research and apply model and supply chain attacks (poisoning, training data extraction, adversarial inputs, deployment pipeline abuse).

Pay and Benefits

Perks:Remote WorkHealth InsuranceVisionDentalParental Leave

Key Requirements

  • •Expert-level Python and software engineering skills.
  • •Solid penetration testing fundamentals and understanding of common attack chains.
  • •Familiarity with AI/LLM security frameworks (e.g., OWASP Top 10 for LLMs, MITRE ATLAS).
  • •Experience in a security product or offensive security team, ideally with shipped offensive capabilities or tooling.
  • •Proven ability to break AI/LLM and agentic systems.
Experience:CybersecurityAi security
Skills:Self-motivationOwnershipProactivityProblem-solvingCommunication
Languages:English
Tech Stack:PythonLLM securityOWASP Top 10 for LLMsMITRE ATLASVector databasesGPUMLOpsCloud

Company Brief

Horizon3.ai
Builds NodeZero®, an autonomous penetration-testing platform that continuously finds, prioritizes, and verifies exploitable vulnerabilities across on-premises, cloud, and hybrid environments to help organizations reduce security risk.
Industry: Cybersecurity
Company Size: Large (251 to 1,000 employees)
Growth: Scaleup
Funding: Series D
Headquarters: San Francisco, United States
Founded: 2019
Glassdoor
Glassdoor: 4.9
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