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Lead Security Engineer, Enterprise Security at Klaviyo - ApplyBlast

Lead Security Engineer, Enterprise Security

Klaviyo

5 months ago

3.3 on Glassdoor

Remote

Full Time

Senior

14 applicants

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About this role

As a Lead Security Engineer on Klaviyo's Enterprise Security team, you will lead the security architecture for critical SaaS applications and corporate systems, with a focus on Zero Trust, identity management, and AI-first security practices. This hands-on technical leadership role involves partnering across engineering and IT to mature security programs, establish design standards, and mentor engineers while ensuring the company's security posture keeps pace with rapid innovation.

Responsibilities

Lead security architecture for critical SaaS applications and corporate systems
Design and implement Zero Trust network architecture and secure access policies
Mature identity and access management programs including IAM and SSO integrations
Champion AI-first approaches to security engineering and artifact validation
Mentor engineers and establish technical standards across the security organization

Skills

Qualifications

BA or BS in Computer Science or related fieldCISSP or equivalent security certificationAWS Certified Security - Specialty

About Klaviyo

klaviyo.com

Headquarters

Boston, Massachusetts, United States

Company Size

1001-5000 employees

Founded

2012

View Profile

Klaviyo is a B2C CRM and marketing automation platform that unifies AI-powered email and SMS to help ecommerce brands drive growth and retention. It uses customer data, advanced segmentation, and automation flows to deliver personalized, omnichannel experiences across email, SMS, WhatsApp, and more — including AI-driven capabilities via K:AI Agents. Klaviyo emphasizes measurable results with analytics, testing, and integrations with major ecommerce platforms to boost revenue and lifetime value. Companies use it to build targeted lifecycle campaigns, personalized messaging, and data-driven retention strategies at scale.