Member of Technical Staff - Security

You will own the security posture across hosted training, GPU infrastructure, compute marketplaces, and customer-facing systems. You will define secure architecture, lead threat modeling, build detection and response capabilities, manage penetration testing, drive compliance, and establish the security function.

Responsibilities

• Own threat modeling across infrastructure, sandboxes, APIs, and internal tooling
• Design and implement zero-trust networking, identity, and access control
• Build secure-by-default authentication, secrets management, supply chain, and container patterns
• Architect tenant isolation and data boundaries
• Develop frameworks for model weight protection, training data isolation, checkpoint integrity, and gradient privacy
• Secure the RL training loop end-to-end
• Build defenses against prompt injection, model exfiltration, and environment manipulation
• Manage external penetration tests
• Build an internal red-teaming practice
• Drive vulnerability management and remediation
• Build security monitoring and alerting
• Implement runtime security
• Own incident response and post-mortems
• Design audit logging and forensic capabilities
• Drive SOC 2 Type II readiness
• Manage security questionnaires and architecture reviews

Requirements

• 5+ years in security engineering, infrastructure security, or offensive security
• Cloud security
• Kubernetes security
• Container runtime hardening
• Python
• Rust or another systems-level language
• Network security in distributed systems
• Service mesh
• mTLS
• Network segmentation
• External penetration testing
• Cryptography
• Identity and access management
• Secure software development lifecycle

Benefits

• Significant equity incentives
• Flexible work arrangement
• Full visa sponsorship
• Relocation support
• Professional development budget
• Regular team off-sites
• Conference attendance