Lead Security Engineer, Enterprise Security
$175,200–$262,800 year
On-site · Boston, Massachusetts, United States
Job Summary
Lead Security Engineer on the Enterprise Security team responsible for securing Klaviyo’s corporate systems and platforms across critical SaaS apps, IAM, Zero Trust, endpoints, and perimeter security. Delivers complex cross-functional projects end-to-end, defines design patterns and standards, mentors engineers, and embraces an AI-first approach to security engineering. Key duties include security architecture across SaaS applications, IAM design and operations (including JITA, privilege management, SSO/SCIM), expanding Zero Trust, Cloudflare perimeter controls, and enterprise endpoint security, with hands-on policy-as-code and production problem-solving. Experience with Terraform, AWS, IdP solutions (Okta, Cognito), and security tooling (Cloudflare, Wiz, CrowdStrike) is required, along with strong knowledge of SSO/SCIM/SAML 2.0/OIDC and privileged access workflows; nice-to-have items include GCP/Azure and AI-security tooling. The role also emphasizes mentoring and cross-team collaboration, with a travel allowance up to 10%.
Required Qualifications
- 7+ years of experience in security or infrastructure engineering
- ownership of enterprise security domains such as SaaS security, IAM, Zero Trust, endpoint security, or cloud-delivered security services
- hands-on policy-as-code, architecture review, and production debugging
- proficiency with Terraform for infrastructure-as-code
- experience operating in AWS environments with cloud security services
- experience with enterprise IdP solutions such as Okta, AWS Cognito
- experience with Cloudflare (WAF, gateway), Wiz CNAPP, and CrowdStrike EDR
- knowledge of SSO, SCIM, SAML 2.0, OAuth and OIDC
- mentoring engineers and setting technical standards
- willingness to travel up to 10%
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