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 klaviyo.com/careers to see how we empower creators to own their own destiny.
Core Infrastructure at Klaviyo treats system operations as a software engineering discipline. Our mission is to empower product engineers with the services, tooling, and guidance they need to build and scale systems that are reliable, performant, and secure.
The Core Infrastructure Security organization is responsible for the foundational security infrastructure that underpins Klaviyo’s platform. We build and operate core security services, automation, and tooling that enable product teams to deliver features at scale—securely and predictably. Our domains include vulnerability management, production network defenses, identity and access management (IAM) for infrastructure, secrets management, security tooling, and centralized logging.
As a Senior Engineering Manager of the Core Infrastructure Security team, you will lead multiple teams and drive the overall strategy and execution for Klaviyo’s platform security. You’ll partner closely with engineering and security leadership to define and deliver a roadmap that strengthens Klaviyo’s security posture while enabling high developer velocity. This role is both strategic and hands-on: you will set direction, coach and grow leaders, and ensure operational excellence across our security systems.
How You’ll Make a Difference- Lead and Scale Core Infrastructure Security: Manage and develop multiple engineering teams (typically 2–3 team leads and 8–12 engineers) focused on secure infrastructure, automation, and platform reliability.
- Define Strategy and Roadmap: Establish and drive a cohesive multi-quarter roadmap for platform security—covering identity and access management, secrets management, network and perimeter security, and developer tooling.
- Shape Platform Security Vision: Partner with leaders in Product Engineering, Security & Trust, and Infrastructure to evolve Klaviyo’s approach to security at scale.
- Deliver High-Impact Projects: Oversee major initiatives such as the rollout of an enterprise secrets management solution, next-generation IAM infrastructure, and web application firewall (WAF) enhancements.
- Develop Leaders and Teams: Coach engineering managers and senior engineers to strengthen leadership capabilities, technical depth, and execution excellence.
- Drive Operational Maturity: Champion improvements in observability, incident response, and automation to reduce operational load and increase system resilience.
- Foster Cross-Functional Alignment: Build strong partnerships across engineering, security, compliance, and product organizations to ensure security initiatives align with business priorities.
- Raise the Bar: Contribute to organization-wide process improvements in recruiting, onboarding, performance management, and technical operations practices.
- A proven engineering leader with experience managing managers and scaling distributed teams in infrastructure, reliability, or security domains.
- Experienced in defining long-term strategies and driving large-scale platform initiatives involving multiple teams and stakeholders.
- Adept at developing technical leaders—you invest in mentorship, delegation, and building high-performing, autonomous teams.
- Skilled at balancing security and velocity, and making pragmatic tradeoffs between risk and developer productivity.
- Comfortable engaging in deep technical discussions around infrastructure design, automation, and secure-by-default system patterns.
- Experienced in building and operating secure, scalable, and resilient systems in cloud-native environments.
- A strong communicator and collaborator who can influence at all levels of the organization and build alignment across functions.
- 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.
Your recruiter can provide more details about the specific salary/OTE range for your preferred location during the hiring process.
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.
By participating in Klaviyo’s interview process, you acknowledge that you have read, understood, and will adhere to our Guidelines for using AI in the Klaviyo interview Process. For more information about how we process your personal data, see our Job Applicant Privacy Notice.
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.
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Klaviyo Dublin, Dublin, IRL Office
One Central Plaza, Dublin, Ireland
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