Lead Security Engineer

External

Periodic-labs · Menlo Park

Full-timeOn-site1mo ago

AWSAzureBashCI/CDDNSGCP

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About the role

You will lead, design, build, and operate security engineering at Periodic Labs. You will secure the systems that power our research and operations, including cloud environments, clusters, internal developer platforms, identity systems, secrets, SaaS access patterns, and lab-adjacent infrastructure. You will work closely with research, infra, lab, and operations teams to reduce risk without slowing down experimentation. This is a hands-on engineering role. You will write automation, ship controls, lead incident response, and raise the bar for how we design secure systems. You will set pragmatic standards and build tooling that makes the secure path the easy path for the rest of the company.

Responsibilities

Own security architecture across cloud, Kubernetes, internal services, and research infrastructure

Design and operate identity and access systems for both people and workloads, including SSO, MFA, RBAC, SCIM lifecycle automation, workload identity, and least-privilege access patterns

Build and improve secrets management across the company, including KMS, GitHub and CI credentials, 1Password or equivalent systems, and secure service-to-service authentication

Harden software delivery and developer workflows, including CI/CD, dependency security, build provenance, artifact integrity, and secure GitHub administration

Lead threat modeling, secure design reviews, and risk assessments for internal platforms, lab systems, and any externally exposed products

Build detection and response capabilities across cloud, identity, network, and endpoint telemetry, and drive incidents through containment, root cause analysis, and remediation

Own vulnerability management and remediation automation across hosts, containers, dependencies, SaaS, and infrastructure-as-code

Partner with infra and lab engineering on segmentation, remote access, firewall policy, certificates, DNS, and secure device-to-cloud patterns

Set pragmatic security standards, run tabletop exercises, and help the rest of the company make sound security decisions without adding unnecessary process

You Will Thrive in This Role If You Have

Experience building and operating security controls in AWS, GCP, or Azure and in Kubernetes-based environments

Strong hands-on engineering with a scripting language such as Python or Bash, and Terraform

Experience with identity systems such as Okta or Entra, SAML, OIDC, SCIM, IAM, workload identity, and least-privilege design

Experience with secrets management and secure credential flows, including KMS, CI/CD secrets, GitHub OIDC, or service-to-service authentication

Familiarity with secure SDLC and supply chain controls, including code review, threat modeling, dependency management, signed builds or attestations, and CI hardening

Experience with detection and response, vulnerability management, and incident handling in fast-moving engineering environments

Strong Linux and network security fundamentals, including segmentation, certificates, DNS, firewalls, VPNs or Tailscale, and service-to-service auth

Experience working with researchers or platform teams where the goal is to find the optimal point in the security/velocity tradeoff

Clear communication, strong judgment, and the ability to drive cross-functional security work

Especially Strong Candidates May Also Have

Experience securing AI, ML, or research infrastructure

Experience securing mixed on-prem and cloud environments, including lab-adjacent systems or physical device integration

Experience with runtime security, eBPF, admission control, or policy-as-code

Experience translating customer or enterprise security requirements into practical engineering controls

Mechanics

Minimum education: Bachelor's degree or similar experience

Location: Menlo Park (Soon: San Francisco, too)

Compensation: $250,000-350,000 + equity

Visa sponsorship: Yes, we sponsor visas and will do everything we can to assist in this process with our legal support.

We're building a team of the world's best - the scientists, engineers, and problem-solvers who don't just follow the frontier, they define it. If you're driven to bring AI to life in the physical world and make discoveries that have never been made before, you belong here.

Lead Security Engineer

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