Principal Engineer, AI Security

Location: Cambridge, MA, USA

Base salary: $252,000–$374,000 USD per year, with bonus potential and early-stage equity.

Company

hirify.global builds autonomous AI systems and scientific instruments to accelerate discovery across medicine, materials, and energy.

What you will do

• Translate the AI security roadmap into measurable security controls.
• Design and implement controls for training and inference pipelines, model registries, MCP servers, and agent runtimes.
• Maintain continuous compliance of AI infrastructure against internal standards and applicable frameworks.
• Drive vulnerability remediation across AI infrastructure, models, and dependencies to closure.
• Perform threat modeling, control design, and adversarial assessment across data, models, pipelines, and agentic systems.
• Partner with AI Platform, AI Research, ML Operations, Science, and AI Safety teams to embed security at design time.

Requirements

• Strong security engineering, cloud security, or DevSecOps background with hands-on production infrastructure experience.
• Working knowledge of AI/ML systems, the ML lifecycle, and risks including prompt injection, model and data poisoning, insecure agent tooling, and inference-time threats.
• Experience with software supply chain security, dependency management, and vulnerability management.
• Experience implementing cloud data security controls including classification, data flow mapping, access control, and encryption.
• Ability to partner across engineering teams and drive remediation to closure.
• Comfort working with ambiguity in a fast-moving research environment.

Nice to have

• Hands-on AWS security experience.
• Experience with SBOM tooling at scale.
• Familiarity with AI governance and assurance frameworks such as NIST AI RMF.
• Experience with MAESTRO-style threat modeling for agentic systems.

Culture & Benefits

• Startup-speed environment focused on scientific discovery and autonomous AI systems.
• Full-time U.S. employees receive medical, dental, and vision coverage.
• Employer-paid life and disability insurance, flexible time off, and generous company-wide holidays.
• Paid parental leave, educational assistance, commuter benefits, and a subsidized lunch program.
• Full-time employees outside the U.S. receive benefits tailored to their region.