🚀 We’re Hiring: AI Security Tester

📍 Flexible / Hybrid (UK-based)

🔐 SC Cleared / Eligible Required

Are you passionate about breaking AI systems before adversaries do? We’re looking for an AI Security Tester with deep offensive security expertise to help safeguard next-generation AI solutions.

🔍 Role Overview

In this role, you’ll simulate real-world attacks to uncover vulnerabilities in AI/ML systems. From stress-testing model guardrails to identifying data privacy risks, you’ll play a critical role in ensuring secure and trustworthy AI deployments.

Working Model - Hybrid Role, when needed will have to travel to Mastek offices or customer location

🛠️ What You’ll Do

• Conduct adversarial testing to challenge AI model safety and guardrails
• Perform penetration testing and fuzzing of AI systems
• Identify risks such as data poisoning, model evasion, hallucinations, and bias
• Validate data privacy controls, including PII handling and encryption
• Simulate attack scenarios and exploit attempts
• Document vulnerabilities, unexpected behaviours, and evidence in lower environments
• Analyse threat vectors and recommend mitigation strategies

✅ Key Requirements

• 5+ years in offensive cybersecurity (AppSec, Pen Testing, Red Teaming)
• Minimum 2 years focused on AI/ML security
• Strong programming skills in Python / Java
• Hands-on experience with ML frameworks (e.g., PyTorch, TensorFlow)
• Familiarity with AI tooling (e.g., LangChain, LlamaIndex, red-teaming toolkits)
• Proven ability to assess and secure AI systems end-to-end

🎓 Nice to Have

• Master’s degree in Computer Science, Cybersecurity, AI/ML, or related field
• Certifications such as CISSP or AI security/safety credentials