Senior Security Engineer, Cloud & Offensive Defense

Collinear AI, Inc.; California (MO); On-site; USD 190,000 - 230,000; Full time

Job summary

Collinear AI, Inc. is seeking a senior security engineer to own security across our infrastructure, products, and customer data. You will lead security across AWS, CI/CD, and Kubernetes, and drive threat detection, response, and SOC 2 readiness.

You’ll work with researchers and engineers to set security direction, implement new measures, and guide customers on risk and compliance. Strong hands-on cloud security and automation are essential.

Qualifications

• 8+ years of experience in security engineering, with production cloud security.
• Deep hands-on AWS security experience (IAM, CloudTrail, GuardDuty, KMS, VPC).
• Offensive security background (pentesting, red team, vuln research).
• Experience isolating untrusted workloads with containers/microVMs (gVisor, Firecracker, Kata).
• Production-grade Python coding and automation.
• Experience building security programs in a startup environment.
• Ability to articulate risk to engineers, leadership and customers' security teams.

Responsibilities

• Harden sandboxes for untrusted code in AI agent environments.
• Own AWS security design, IAM, least privilege, and short-lived credentials.
• Build detection and response across cloud/Kubernetes; tune alerts.
• Protect customer data from arrival to delivery, incl. access controls and PII removal at scale.
• Lead customer security reviews and SOC 2/compliance efforts.
• Secure software supply chain: dependencies, CI/CD, secrets, GitHub org.
• Set guardrails for engineers against production infrastructure risks.
• Test systems like an attacker and fix identified issues.

Skills

Security engineering

AWS security

Offensive security

Container isolation

Python automation

Startup security program

Risk communication

Tools

AWS

gVisor

Firecracker

Kata Containers

Python

GitHub

Job description

Collinear AI, Inc. is seeking a senior security engineer to own security across our infrastructure, products, and customer data. You will lead security across AWS, CI/CD, and Kubernetes, and drive threat detection, response, and SOC 2 readiness.

You’ll work with researchers and engineers to set security direction, implement new measures, and guide customers on risk and compliance. Strong hands-on cloud security and automation are essential.