Lead Security Engineer

At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyo) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If youre a close but not exact match with the description, we hope youll still consider applying. Want to learn more about life at Klaviyo? Visit to see how we empower creators to own their own destiny.

As a Lead Security Engineer, youll be a vital part of the Infrastructure Security Team, focusing on strengthening the security posture across Klaviyos entire technology environment, developing security architectures and repeatable patterns and mentoring colleagues and junior security engineers. Unlike roles with a narrowly defined specialty, this position offers the opportunity to demonstrate your unique expertisewhether thats in cloud security, identity and access management, data protection, secure systems design, or other security domains. Your work will involve evaluating and hardening our infrastructure, collaborating with cross?functional teams, and leveraging AI to build scalable solutions to address emerging threats.

We are looking for someone who is excited to bring their specialized skills to the team, shaping Klaviyos security practices and helping us continue to raise the bar.

How You Will Make a Difference

• Secure Klaviyos infrastructure by designing, implementing, and maintaining scalable security controls across cloud, on?prem, and hybrid environments
• Evaluate and improve security configurations and policies across a range of technologies, using your domain expertise to reduce risk and enable secure?by?default architectures
• Collaborate with engineering and IT teams to embed security practices and develop repeatable security patterns across the development and deployment lifecycle
• Lead threat modeling, risk assessments, and architecture reviews in areas aligned with your specialty
• Develop automated solutions and infrastructure?as?code to drive consistent and reproducible security outcomes
• Stay ahead of the latest threats and advocate for innovative security solutions aligned with business needs
• Help define security standards and best practices at Klaviyo, championing their adoption across teams

Who You Are

Massachusetts Applicants : It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

Base Pay Range For US Locations

$220,000 $330,000 USD

Get to Know Klaviyo

Were Klaviyo (pronounced clay?vee?oh). We empower creators to own their destiny by making first?party data accessible and actionable like never before. We see limitless potential for the technology were developing to nurture personalized experiences in ecommerce and beyond. To reach our goals, we need our own crew of remarkable creatorsambitious and collaborative teammates who stay focused on our north star : delighting our customers. If youre ready to do the best work of your career, where youll be welcomed as your whole self from day one and supported with generous benefits, we hope youll join us.

AI fluency at Klaviyo includes responsible use of AI (including privacy, security, bias awareness, and human?in?the?loop). We provide accommodations as needed.

Importance : The company takes the security and privacy of job applicants very seriously. We will never ask for payment, bank details, or personal financial information as part of the application process. All legitimate job postings can be found on our official career site. Please be cautious of job offers that come from non?company email addresses (@), instant messaging platforms, or unsolicited calls.

By clicking Submit Application you consent to Klaviyo processing your personal data in accordance with our Job Applicant Privacy Notice. If you do not wish for Klaviyo to process your personal data, please do not submit an application.

This role is based out of Denver, CO and requires a weekly in?office hybrid component (3 days on site). Are you based in the Denver area or willing to relocate to the Denver area?

Do you currently have legal work authorization in the country where this position is based? Would you, now or in the future, require immigration sponsorship for work authorization?

We are an equal opportunity employer. Klaviyo is committed to a policy of equal opportunity and non?discrimination. We do not discriminate on the basis of race, ethnicity, citizenship, national origin, color, religion or religious creed, age, sex, gender identity, sexual orientation, physical or mental disability, veteran or active military status, marital status, criminal record, genetics, retaliation, sexual harassment or any other characteristic protected by applicable law.

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