Director, Application Engineering

Job Description

Job Description

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.

Summary

As the Director of Application Engineering, you are the chief architect of Klaviyo's internal technology nervous system. This is a critical, hands-on leadership role focused on evolving our application ecosystem from point-to-point connections to a robust, event-driven integration fabric. Reporting to the CIO, you will lead a world-class team of engineers to deliver sophisticated integrations and build powerful custom tools that drive enterprise-wide automation and efficiency. Your mission is to create a secure, observable, and highly scalable technical foundation that empowers every team at Klaviyo to operate with speed and precision.

What You'll Do

• Lead an Elite Engineering Team : Recruit, mentor, and lead a team of full-stack, application and integration engineers. Foster a culture of engineering excellence, innovation, and full ownership of outcomes.
• Architect the Enterprise Integration Fabric : Design and own the enterprise integration strategy, moving towards an API-first, event-driven architecture. Own the enterprise iPaaS (Integration Platform as a Service) and ensure its reliability and scale.
• Deliver Mission-Critical Integrations : Oversee the full development lifecycle for all integrations touching our core SaaS platforms (Workday, Salesforce, etc.), ensuring they are performant, resilient, and maintainable.
• Drive Custom Solution Development : Spearhead the engineering of bespoke internal applications that solve complex business problems where off-the-shelf software falls short, creating unique operational advantages for Klaviyo.
• Champion Modern Engineering Practices : Establish and enforce rigorous software engineering standards, including modern CI / CD, comprehensive automated testing, proactive security scanning (SAST / DAST), and SLO / SLA-based monitoring.
• Own the Technical Health of the Ecosystem : Assume ultimate ownership for the performance, security, and cost-effectiveness of our integration platforms, custom applications, and API management layer.
• Transform workflows by putting AI at the center, building smarter systems and ways of working from the ground up.

Who You Are

Required Qualifications :

Preferred Qualifications :

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

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.

Our salary range reflects the cost of labor across various U.S. geographic markets. The range displayed below reflects the minimum and maximum target salaries for the position across all our US locations. 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.

Base Pay Range For US Locations :

$200,000—$300,000 USD

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.

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).