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Backblaze

Senior AI Security Engineer

Backblaze

Senior AI Security Engineer designing safeguards for internal AI usage at Backblaze. Focused on agentic systems, developer protection, and runtime security.

Posted 6/9/2026full-timeRemote • 🇦🇷 ArgentinaSeniorWebsite

Tech Stack

Tools & technologies
GoJavaPythonTypeScript

About the role

Key responsibilities & impact
  • Architect and implement guardrails for tool-using AI systems, including:
  • Tool access controls and allowlists
  • Context and memory isolation
  • Step-level validation of agent actions
  • Apply mitigations aligned to the OWASP Agentic AI Top 10 (e.g., prompt injection, unsafe tool use, data leakage, excessive autonomy)
  • Build enforcement mechanisms that govern AI behavior at execution time:
  • Interceptors, proxies, or middleware for tool/API calls
  • Policy decision and enforcement layers
  • Rate limits, execution bounds, and kill-switches
  • Design and implement identity and access controls for agents and automation, including:
  • Short-lived credentials and scoped permissions
  • Clear separation between human and non-human access
  • Strong binding of identity to task context and execution
  • Ensure all AI actions are attributable and auditable
  • Implement logging and tracing for AI activity:
  • Prompts, tool usage, and decision flows
  • Build detection capabilities using:
  • Behavioral baselining and anomaly detection techniques
  • Identify and alert on:
  • Abnormal tool usage
  • Suspicious prompt patterns
  • Unexpected data access
  • Perform agentic system threat modeling using MAESTRO, including:
  • Mapping agent capabilities, trust boundaries, and attack paths
  • Modeling misuse and adversarial scenarios
  • Translate findings into practical safeguards and detection logic
  • Protect developers using AI tools by:
  • Preventing sensitive data exposure
  • Validating AI-generated code and actions
  • Constraining unsafe automation

Requirements

What you’ll need
  • 7+ years in security engineering or backend systems
  • Proven experience designing and deploying security controls, such as:
  • Runtime enforcement layers (proxies, middleware, policy engines)
  • Identity and access systems, especially for non-human entities
  • Strong programming skills (Python preferred; Go, Java, or TypeScript a plus)
  • Experience using AI-assisted development tools such as Claude Code in real workflows, including understanding associated security risks and safeguards
  • Experience with:
  • Logging, monitoring, and detection systems
  • Building or securing API/service interactions
  • Practical familiarity with:
  • Agentic AI systems or tool-integrated LLM workflows
  • OWASP guidance for AI/agent risks.

Benefits

Comp & perks
  • Health insurance
  • 401(k) matching
  • Flexible work hours
  • Paid time off
  • Remote work options

ATS Keywords

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Hard Skills & Tools
security engineeringbackend systemssecurity controlsruntime enforcement layersidentity and access systemsprogramming (Python, Go, Java, TypeScript)AI-assisted development toolslogging systemsmonitoring systemsdetection systems