Security Infrastructure Engineer at well-funded enterprise AI platform

You will own the security architecture and cloud infrastructure for a high-growth platform handling extremely sensitive data. This is an engineering-first role focused on hardening multi-account AWS environments, implementing least-privilege IAM, and building resilient systems from the ground up. You will balance advanced security controls with cost efficiency and operational scale.

Well-funded enterprise AI platform

• Design and implement least-privilege IAM strategies and Service Control Policies (SCPs) across a multi-account cloud environment.
• Architect secure networking configurations using PrivateLink and VPC structures to minimize attack surfaces and eliminate exposure.
• Develop infrastructure-as-code using CDK or Terraform to automate threat detection, logging, and rapid incident response playbooks.

• 5+ years of experience operating production AWS infrastructure with deep expertise in cloud security attack vectors and mitigation.
• Expert-level knowledge of AWS networking and identity management, including STS, trust relationships, and complex policy evaluation.
• Proven track record of scaling secure cloud architectures while optimizing for performance and significant infrastructure cost reduction.

• Significant architectural ownership in an early-stage environment where security is a core product differentiator rather than a compliance checkbox.
• Join a elite engineering culture featuring alumni from top-tier global technology firms and high-frequency trading shops.
• Backed by prestigious venture capital firms with massive growth trajectory and a mission to protect high-stakes institutional data.