
Senior Product Security Engineer
Phaidra
full-time
Posted on:
Location Type: Remote
Location: United Kingdom
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Salary
💰 £84,000 - £142,000 per year
Job Level
About the role
- Champion Secure Agentic AI Development: Drive the adoption of Phaidra’s Secure AI/ML Development Lifecycle (SAIDL) within the Agentic AI team. Adapt security practices to fit the iterative and experimental nature of Reinforcement Learning and agent development.
- Agentic Threat Modeling: Partner with researchers to model threats specific to autonomous agents. Beyond standard AI risks, you will analyze risks unique to agents, such as goal misalignment, reward hacking, infinite looping, and insecure tool execution (e.g., an agent executing a command that exceeds safety limits).
- Secure Agent Architecture & Safety Boundaries: Design secure-by-default architectures for autonomous agents. Crucially, this involves defining deterministic safety guardrails that sit between the probabilistic AI model and the physical hardware controls. Ensure "Zero Trust" applies to the agent—it should only have the minimum permissions needed to adjust specific parameters.
- Secure Agent Tools & Memory: Architect security controls for the "tools" the agent uses (APIs to read sensors or change settings) and the agent's long-term memory. Ensure the agent cannot be manipulated into using a tool to perform unauthorized actions or "poisoned" via its memory context.
- MLSecOps for RL Pipelines: Secure the training and simulation pipelines used for Reinforcement Learning. Ensure the integrity of the simulation environments (Digital Twins) used to train agents, preventing attackers from influencing agent behavior during the training phase.
- Adversarial Testing & Red Teaming: Lead AI Red Teaming exercises focused on behavioral manipulation. Can you trick the agent into making a suboptimal decision? Can you manipulate the observations the agent receives?
- Incident Preparedness: Develop incident response playbooks tailored for autonomous systems, focusing on "Kill Switches" and rapid rollback capabilities in the event of rogue agent behavior.
- Cross-Functional Partnership: Build strong relationships with the Agentic AI researchers, SREs, and Data Scientists. Act as an enabler who helps them deploy powerful agents safely, rather than a blocker.
Requirements
- Proven understanding of the security risks associated with Reinforcement Learning, Autonomous Agents, or automated decision-making systems.
- Demonstrated experience working embedded with AI system developers and researchers. You understand the difference between "probabilistic" (AI) and "deterministic" (Code) and how to secure the bridge between them.
- 5+ years of work experience in product security, application security, or a closely related security engineering role.
- You understand that in physical systems, "Availability" and "Safety" often outrank "Confidentiality." You are familiar with concepts like fail-safes and human-in-the-loop controls.
- Strong programming experience, ideally with Python (essential for ML/AI ecosystems) or Go.
- Familiarity with agent frameworks (e.g., LangChain, AutoGPT) or RL libraries (e.g., Ray RLLib).
- Proven experience securing Cloud infrastructure (GCP) and Kubernetes.
- Deep understanding of Authentication & Authorization (specifically non-human identities/workload identity).
- Direct, hands-on experience securing MLOps tooling (e.g., Kubeflow, MLflow) and deep understanding of securing complex data and model-training pipelines.
Benefits
- Fast-paced, team-oriented environment where your work directly shapes the company’s direction.
- We are a 100% remote company.
- Competitive compensation & meaningful equity.
- Outsized responsibilities & professional development.
- Training is foundational; functional, customer immersion, and development training.
- Medical, dental, and vision insurance (exact benefits vary by region).
- Unlimited paid time off, with a required minimum of 20 days per year.
- Paid parental leave (exact benefits vary by region).
- Flexible stipends to support your workspace, well-being, and continued professional development.
- Company MacBook.
Applicant Tracking System Keywords
Tip: use these terms in your resume and cover letter to boost ATS matches.
Hard Skills & Tools
Reinforcement LearningAutonomous AgentsApplication SecurityProduct SecurityPythonGoLangChainAutoGPTRay RLLibMLOps
Soft Skills
Cross-Functional PartnershipIncident PreparednessBehavioral ManipulationStrong RelationshipsAdaptability