We are currently hiring a AI Security Tester for an exciting client engagement.
Role: AI Security Tester
Location: Reading , UK (Hybrid Role, when needed will have to travel to Mastek offices or customer location)
Positions: Permanent
Clearance: SC Cleared / Eligible
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 Client 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 cyber security (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
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Penetration Tester in Reading employer: Response Informatics Limited.
As a leading employer in the tech industry, we offer an innovative work culture that fosters collaboration and creativity, particularly for our Product Owners. Located in a vibrant city, we provide competitive benefits, opportunities for professional growth, and a commitment to continuous learning, ensuring that our employees can thrive both personally and professionally while making a meaningful impact on product development.
Contact Details:
Response Informatics Limited. Recruitment Team
