Collinear AI
MTS - Engineering (Security)
San Francisco, CA · Senior
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About the role
- They trust us with sensitive data and access to their systems, and many of our environments run AI agents that are being trained to find and exploit vulnerabilities.
Responsibilities
- Own AWS security, including IAM design, least-privilege access, network boundaries, and short-lived credentials in place of long-lived keys
- Build detection and response across our cloud and Kubernetes environments, and tune alerts so the team acts on them
- Protect customer data from the moment it arrives to the moment we deliver, including access controls, secure delivery, and PII removal at terabyte scale
- Lead customer security reviews and compliance work, from security questionnaires and supplier onboarding to SOC 2
Nice to have
- You have 8+ years of experience in security engineering, much of it securing cloud infrastructure in production
- You have deep hands-on experience with AWS security, including IAM, CloudTrail, GuardDuty, KMS, and VPC design
- You have an offensive security background, such as penetration testing, red teaming, or vulnerability research, and use it to decide what to defend first
- You have isolated untrusted workloads with containers or microVMs, using tools such as gVisor, Firecracker, or Kata Containers, and know where that isolation tends to fail
- You write production-quality code, ideally in Python, and prefer automation to manual process
- You have built or grown a security program at a startup, and know how to prioritize when you can't fix everything at once
This listing is sourced directly from Collinear AI's careers page and normalized into a canonical job model.