Intellias
Security & Test Engineer (A2A)
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Security & Test Engineer
We are looking for a Security & Test Engineer to validate the security, reliability, and trustworthiness of agent-to-agent communication platforms. The role combines security testing, performance validation, policy verification, and AI threat modeling for multi-agent systems. The ideal candidate has hands-on experience in security engineering, automated testing, API security, and modern AI/agent security frameworks.
Our customer is a multinational corporation with more than a century of history and offices in over 180 countries. Their most ambitious goal at the time is to introduce a range of Reduced-Risk Products (RRPs). The target audience is more than 1 billion consumers around the globe. IT platform hosts 700+ applications.
What we offer you in the UK
- AXA private medical insurance
- Life insurance
- Aviva pension scheme: 5% employee + 3% employer contributions
- LinkedIn Learning
- Internal educational activities and blog development program
- Employee recognition with Kudos
- Welcome kits and corporate gifts for special occasions
- Referral programs with monetary bonuses
Requirements:
- 4+ years security engineering or QA
- A2A trust model (OAuth 2.0 + signed Agent Cards, JWT validation, token scope enforcement for agent channels)
- Python security test automation
- Functional and security test design
- Performance testing (k6, Locust)
- Cedar policy testing (permit/deny correctness, forbid-overrides-permit, LOG_ONLY vs ENFORCE mode)
- API security testing
- Performance benchmarking for cloud APIs
- Agentic AI / LLM threat modelling (OWASP Top 10 for LLMs, excessive agency, tool parameter exfiltration)
- Security test design for AI/agent systems (not just REST APIs)
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Will be a plus:
- Multi-agent communication security patterns
- Trust model gap analysis for non-AgentCore A2A agents
Responsibilities:
- Design and execute security and functional test strategies for A2A communication platforms.
- Validate A2A trust models including OAuth 2.0 authentication, JWT validation, signed Agent Cards, and token scope enforcement.
- Develop automated security test suites using Python.
- Design and execute API security testing scenarios against agent communication channels and platform services.
- Implement performance and load testing using tools such as k6 and Locust.
- Design and maintain Cedar policy validation suites covering permit/deny behavior, policy precedence, forbid-overrides-permit logic, and policy mode transitions.
- Validate LOG_ONLY versus ENFORCE behavior across authorization workflows.
- Perform security reviews and threat modeling for agent ecosystems and AI-driven workflows.
- Develop test scenarios covering prompt injection, excessive agency, tool misuse, parameter exfiltration, and other AI-specific attack vectors.
- Verify authorization, policy enforcement, auditability, and trust boundaries between communicating agents.
- Collaborate with platform, backend, and security teams to identify vulnerabilities and improve platform resilience.
- Produce security reports, test documentation, risk assessments, and mitigation recommendations.
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At Intellias, where technology takes center stage, people always come before processes. We're dedicated to cultivating a tech-savvy environment that empowers individuals to unlock their true potential and achieve extraordinary results. Our customized benefits not only prioritize your well-being but also charge your professional growth, making this opportunity an ideal match for tech enthusiasts like you.
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