Senior AI Security Engineer

🕒 June 9

🌐 Argentina, Colombia, +2 more countries – Remote

🇦🇷 Argentina – Remote 🇨🇴 Colombia – Remote 🇨🇷 Costa Rica – Remote 🇲🇽 Mexico – Remote

⏰ Full Time

🟠 Senior

👮‍♂️ Cybersecurity / Security Engineer

👻 Ghost score 19%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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Backblaze

WebsiteLinkedInAll Job Openings

201 - 500 employees

Founded 2007

🛍️ eCommerce

🏢 Enterprise

💰 $5M Series A on 2012-07

Cloud Storage • eCommerce • Enterprise

Backblaze is a cloud storage company that provides scalable and secure data backup solutions for both businesses and individuals. Their B2 Cloud Storage service offers S3 compatible object storage, allowing users to easily protect and manage their data with transparent pricing. Backblaze specializes in automatic and unlimited backup services for computer systems, ensuring data protection and recovery options for users, while also supporting integration with applications for enhanced functionality.

📋 Description

• 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

• 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

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