ActiveFence

GenAI Security Specialist

ActiveFence  •  London, GB (Onsite)  •  2 days ago
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Job Description

What We Are Looking For

As a Red Team Specialist focused on GenAI models, you will play a critical role in safeguarding the security and integrity of commercial cutting-edge AI technologies. Your primary responsibility will be to analyze and test commercial GenAI systems including, but not limited to, language models, image generation models, and related infrastructure. The objective is to identify vulnerabilities, assess risks, and deliver actionable insights that strengthen AI models and guardrails against potential threats.

Key Responsibilities

  • Execute sophisticated and comprehensive attacks on generative foundational models and agentic frameworks.
  • Assess the security posture of AI models and infrastructure, identifying weaknesses and potential threats.
  • Collaborate with security teams to design and implement effective risk mitigation strategies that enhance model resilience.
  • Apply innovative testing methodologies to ensure state-of-the-art security practices.
  • Document all red team activities, findings, and recommendations with precision and clarity.

Requirements

Must-Have

  • Strong understanding of AI architecture, frameworks and agentic applications.
  • Hands on experience in AI vulnerability research.
  • Minimum of 3 years of experience in offensive cybersecurity, with a focus on penetration testing.
  • Exceptional analytical, problem-solving, and communication skills.
  • Ability to thrive in a fast-paced, dynamic environment.

Nice-to-Have

  • Bachelor’s or Master’s degree in Computer Science, Information Security, or a related field.
  • Advanced certifications in offensive cybersecurity (e.g., OSWE, OSCE3, SEC542, SEC522).
  • Proficiency in Python.
  • Webint / OSINT experience.

About Alice

Alice is a trust, safety, and security company built for the AI era. We safeguard the communicative technologies people use to create, collaborate, and interact—whether with each other or with machines.

In a world where AI has fundamentally changed the nature of risk, Alice provides end-to-end coverage across the entire AI lifecycle. We support frontier model labs, enterprises, and UGC platforms with a comprehensive suite of solutions: from model hardening evaluations and pre-deployment red-teaming to runtime guardrails and ongoing drift detection.

ActiveFence

About ActiveFence

ActiveFence is the leading provider of AI security and safety solutions, protecting online experiences and AI applications for over 3 billion users, top foundation models, and the world’s largest enterprises and tech platforms.

As a trusted partner to major technology companies and Fortune 500 brands, we secure user-generated and GenAI products against prompt injection, adversarial attacks, and harmful content through Real-Time Guardrails, continuous Red Teaming, and the industry’s most advanced threat intelligence.

With unmatched detection capabilities in 117+ languages, ActiveFence empowers organizations to deliver engaging, safe, and trustworthy experiences globally, helping them innovate responsibly while staying ahead of emerging threats.

Industry
IT & Software
Company Size
201-500 employees
Headquarters
New York
Year Founded
2018
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