Director, Site Reliability Engineering & Security

At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) 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 you’re a close but not exact match with the description, we hope you’ll still consider applying. Want to learn more about life at Klaviyo? Visit careers.klaviyo.com to see how we empower creators to own their own destiny.

Get to Know Klaviyo

At Klaviyo, we empower creators to own their destiny. Our SaaS platform provides businesses of all sizes with powerful, easy-to-use marketing automation tools, making first-party data accessible and actionable like never before. We are a team of ambitious, bold peers who are insatiably curious and meticulous in our craft. As we scale globally, we are seeking a foundational leader to build and lead our Site Reliability and Security Engineering functions from our new strategic hub in Dublin.  

About The Team

The SRE & Security Engineering team is the bedrock of trust for the 169,000+ businesses that rely on Klaviyo to power their growth. This team is responsible for the secure reliability, scalability, and performance of our entire platform: from our core data processing pipelines to our cutting-edge AI services. As a foundational leader in our new Dublin office, you will build this team from the ground up, establishing a center of excellence for platform integrity and playing a pivotal role in Klaviyo’s European expansion. You will be the ultimate custodian of the trust our customers place in us every day.  

How You'll Make a Difference

• Architect and Lead: Define the vision, strategy, and roadmap for a unified SRE and Security Engineering organization. You will build and mentor a world-class, multi-disciplinary team of engineers in Dublin, fostering a culture of operational excellence, proactive problem-solving, and blameless learning.
• Champion Secure Reliability: Drive a "secure and reliable by design" philosophy across all of engineering. Partner with product and platform teams to embed security and reliability principles into the entire software development lifecycle, from initial design to production deployment.
• Own Platform Integrity: Take ownership of the availability, latency, performance, efficiency, change management, monitoring, emergency response, and capacity planning for Klaviyo’s global platform.
• Build a Modern Security Program: Lead the evolution of our security program, including application security, vulnerability management, incident response, and infrastructure hardening. Ensure our platform is defended against modern threats and meets the highest security standards.
• Drive Automation: Build the "paved road" for Klaviyo engineers by developing automated, self-service tooling and infrastructure that enables teams to "move fast, no shortcuts".  
• Ensure Global Compliance: Serve as the on-the-ground technical leader for GDPR and other international data protection regulations. You will be responsible for implementing and verifying the technical controls that safeguard customer data and ensure compliance.
• Lead Through Incidents: Command both security and reliability incidents, guiding teams to rapid resolution while fostering a culture of blameless post-mortems that drive meaningful, systemic improvements.

Who You Are

• You are a proven engineering leader with a track record of building and scaling high-performing, geographically distributed teams in a fast-paced SaaS environment.
• You are intellectually curious and a continuous learner, with a deep understanding of both modern reliability principles and the evolving cybersecurity threat landscape.  
• You are a "Driver" who is biased toward action. You don’t wait for problems to find you; you proactively identify risks and rally teams to solve them.  
• You are a cross-functional influencer and an exceptional communicator, capable of articulating complex technical concepts to diverse audiences, from engineers to executives to enterprise customers.  
• You are a player-coach who can dive deep into technical details with your team while also developing and articulating a long-term strategic vision.  
• You are passionate about building a strong, inclusive team culture and have experience integrating new teams with existing ones across different time zones and cultures.
• You thrive in an environment of high ambiguity and rapid change, embodying a "1% done" mindset and seeing opportunity in every challenge.  

What You'Ll Need

• 10+ years of experience in software engineering, with at least 5+ years in a leadership role managing SRE, DevOps, or Security Engineering teams.
• Proven experience building and scaling engineering teams, ideally with experience establishing a new team or office.
• Deep, hands-on experience with cloud-native production systems at scale (AWS preferred).
• Strong technical background in distributed systems, observability, container orchestration (Kubernetes), infrastructure as code (Terraform), and CI/CD principles.
• Demonstrable experience leading a modern security engineering function, including application security, vulnerability management, and incident response.
• Deep, practical experience implementing technical controls for GDPR compliance and familiarity with other security frameworks (e.g., SOC 2, ISO 27001).
• Experience managing geographically distributed teams and fostering a strong, unified culture across multiple time zones.
• You’ve already experimented with AI in work or personal projects, and you’re excited to dive in and learn fast. You’re hungry to responsibly explore new AI tools and workflows, finding ways to make your work smarter and more efficient.

We use Covey as part of our hiring and / or promotional process. For jobs or candidates in NYC, certain features may qualify it as an AEDT. As part of the evaluation process we provide Covey with job requirements and candidate submitted applications. We began using Covey Scout for Inbound on April 3, 2025.

Please see the independent bias audit report covering our use of Covey here

Our salary range reflects the cost of labour in the country where the job post is advertised. The base salary offered for this position is determined by several factors, including the applicant’s job-related skills, relevant experience, education or training, and work location.

In addition to base salary, our total compensation package may include participation in the company’s annual cash bonus plan, variable compensation (OTE) for sales and customer success roles, equity, sign-on payments, and a comprehensive range of health, welfare, and wellbeing benefits based on eligibility. Please visit Klaviyo Rewards - Global Benefits to find out more about our Total Rewards package.

Your recruiter can provide more details about the specific salary/OTE  range for your preferred location during the hiring process.

Base Pay Range in Local Currency:€175.000—€175.000 EUR

Get to Know Klaviyo

We’re 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 we’re developing to nurture personalized experiences in ecommerce and beyond. To reach our goals, we need our own crew of remarkable creators—ambitious and collaborative teammates who stay focused on our north star: delighting our customers. If you’re ready to do the best work of your career, where you’ll be welcomed as your whole self from day one and supported with generous benefits, we hope you’ll 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. 

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 (including pregnancy), 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.

IMPORTANT NOTICE: Our 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 our legitimate job postings can be found on our official career site. Please be cautious of job offers that come from non-company email addresses (@klaviyo.com), 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.  You can find our Job Applicant Privacy Notice here and here (FR).