Sr. AI Security Engineer

About the Position

Backblaze is the object storage leader in the open cloud movement, fueling customer success with cloud storage built purposefully to unlock budgets, unburden administrators, and unleash innovators. We are seeking a Sr. AI Security Engineer to join our team!

Responsibilities

• Agentic AI Safeguards

  • Architect and implement guardrails for tool-using AI systems
  • Apply mitigations aligned to the OWASP Agentic AI Top 10 (e.g., prompt injection, unsafe tool use, data leakage, excessive autonomy)

• Runtime Security Controls

  • Build enforcement mechanisms that govern AI behavior at execution time
  • Prevent unsafe or unauthorized actions initiated by AI systems

• Non-Human Identity (NHI)

  • Design and implement identity and access controls for agents and automation
  • Ensure all AI actions are attributable and auditable

• Observability & Detection

  • Implement logging and tracing for AI activity
  • Build detection capabilities using

• Threat Modeling (MAESTRO)

  • Perform agentic system threat modeling using MAESTRO
  • Translate findings into practical safeguards and detection logic

• Developer Safeguards

  • Protect developers using AI tools by enabling safe usage of AI-assisted development tools (e.g., Claude Code, Codex, Cursor) with

Requirements

• 7+ years in security engineering or backend systems
• Proven experience designing and deploying security controls
• 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

Nice to Have

• Experience securing internal AI platforms or developer-facing AI tools
• Background in detection engineering, threat hunting, or adversarial testing
• Familiarity with agent frameworks (e.g., LangChain, LlamaIndex)
• Experience mentoring engineers and guiding secure design

We Offer

• Competitive salary
• Opportunity to work in a leading cloud storage company
• Remote work options
• Professional development opportunities

About the Company

Founded in 2007, Backblaze scaled the business with less than $3 million in outside funding until 2021, when we did a traditional IPO on the Nasdaq stock exchange. Today, Backblaze generates over $100m in revenue and is the leading specialized storage cloud - managing over three billion gigabytes of data storage for 500K+ customers in 175+ countries, including businesses, developers, IT professionals, and individuals.

At Backblaze, we value being fair and good to our customers, partners, and employees. That’s why diversity, equity, and inclusion are at the core of our values. We are committed to fostering a workforce where all employees feel a sense of belonging regardless of race, ethnicity, nationality, gender, sexual orientation, age, religion, socio-economic status, ability, veteran status, and education. We are proud to be an Equal Opportunity Employer.

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