Infra Security Lead, Hands-on AI Infrastructure

Together AI; San Francisco (CA); On-site; USD 200,000 - 300,000; Full time

Benefits offered by this job

Health insurance

Startup equity

Job summary

Together AI is seeking a hands-on security leader to own infrastructure security for its globally distributed systems. You will be the technical owner, building internal security tooling, expanding telemetry, and hardening training clusters, GPU fleets, model artifacts, and inference endpoints.

You will report to the SVP of Engineering, define security standards, grow the team, and shape how security enables rapid, safe development of cutting-edge AI infrastructure.

Qualifications

• Hands-on security leadership—lead by example, build with the team.
• Strong systems and cloud-native engineering with Linux expertise.
• Fluency in automation and IaC (Terraform, Ansible, Salt).
• Pragmatic security mindset that enables velocity with safety.

Responsibilities

• Own infrastructure security for globally distributed systems.
• Build and lead infrastructure security team and define standards.
• Harden global systems with security-by-design, accelerate secure shipping.

Skills

Security leadership

Linux administration

Automation / IaC

Cloud-native engineering

Threat detection

Tools

OSQuery

Falco

SIEM

Job description

Together AI is seeking a hands-on security leader to own infrastructure security for its globally distributed systems. You will be the technical owner, building internal security tooling, expanding telemetry, and hardening training clusters, GPU fleets, model artifacts, and inference endpoints.

You will report to the SVP of Engineering, define security standards, grow the team, and shape how security enables rapid, safe development of cutting-edge AI infrastructure.