Job title: Adversarial Tester (Prompt Injection Specialist)

Job type: Contract 

Contract Length: 2 months + extensions

Rate: 400-500 per day Outside IR35

Role Location:  EU and US Fully Remote (Must be wiling to work US East Coast hours)

Role and Responsibilities: 
The Prompt Injection Specialist will design and execute structured adversarial prompt testing against a LLM chatbot. The focus is exclusively on prompt-layer vulnerabilities: jailbreaks, direct and indirect prompt injection, instruction override, and boundary attacks. This is not a cybersecurity or infrastructure penetration testing role.

Job Requirements: 
 

• Hands-on experience with LLM prompt injection, jailbreaking, and adversarial prompt design
• Strong understanding of chatbot architectures, system prompt structures, and guardrail mechanisms
• Familiarity with OWASP LLM Top 10, MITRE ATLAS, and relevant adversarial ML frameworks
• Experience designing structured prompt test sets with coverage metrics
• Ability to define failure taxonomies and severity classification for prompt-layer attacks
• Proficiency with common LLM APIs and chat interfaces (OpenAI, Anthropic, Azure OpenAI, or equivalent)

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Our Commitment to Diversity, Equity, and Inclusion: 

Signify’s mission is to empower every person, regardless of their background or circumstances, with an equitable chance to achieve the careers they deserve. Building a diverse future, one placement at a time.

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