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Sean Kelly

Director of Engineering at Klaviyo

Director of Engineering Director
s***@klaviyo.com Sign up
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Quincy, Massachusetts, United States
klaviyo.com

Company Details

Company: Klaviyo
Industry: marketing & advertising
Employees: 2400
Revenue: 1007298000
HQ Location: Boston, Massachusetts, United States
Company LinkedIn: Pro only

Technology Stack

CloudFlare CDN Salesforce Route 53 Gmail Google Apps Microsoft Office 365 Greenhouse.io Zendesk Amazon AWS CloudFlare Hosting VueJS Sage Intacct Pantheon WP Engine Atlassian Cloud Drift OneTrust Webflow Linkedin Marketing Solutions Scene7

Professional Summary

Sean Kelly is Director of Engineering at Klaviyo. Klaviyo operates in the marketing & advertising industry and has 2400 employees. Based in Quincy, Massachusetts, United States. Classified as a director-level Director of Engineering leader. Their organization's technology stack includes CloudFlare CDN, Salesforce, Route 53, Gmail, Google Apps, and 86 other technologies. Klaviyo reports annual revenue of 1007298000.

Director level · Director of Engineering
Verified Apr 25, 2026

Position in the CTO Rank Database

  • • Typical Director of Engineering compensation in Massachusetts: $180,000 – $340,000 (median $240,000). Composite from levels.fyi, Glassdoor, and Payscale data; adjusted for state cost of labor.

Data compiled from LinkedIn public profiles, company filings, and verified public technology signals. Methodology & sources · Updated June 2026.

Frequently Asked Questions

How do I contact Sean Kelly?

Sean Kelly has a verified email address on file on CTO Rank. They work at Klaviyo. Pro members can access direct email addresses, LinkedIn profiles, and phone numbers.

What company does Sean Kelly work for?

Sean Kelly is Director of Engineering at Klaviyo, a company in the marketing & advertising industry with 2400 employees. The company is headquartered in Boston, Massachusetts, United States.

What is Sean Kelly's role in technology leadership?

Sean Kelly is classified as a Director of Engineering leader at the director level.

What technologies does Sean Kelly's organization use?

Sean Kelly's organization uses a technology stack that includes CloudFlare CDN, Salesforce, Route 53, Gmail, Google Apps, Microsoft Office 365. This information is useful for sales teams, recruiters, and technology vendors.

Is Sean Kelly open to recruiting or new opportunities?

CTO Rank does not track open-to-work status. The best approach is to reach out directly to Sean Kelly using the verified contact information available to Pro members. When recruiting a Director of Engineering, personalizing your outreach with specifics about the role and tech stack typically yields the best response rate.

Can I pitch or sell to Sean Kelly at Klaviyo?

Sean Kelly is Director of Engineering at Klaviyo. Director of Engineerings like Sean Kelly typically evaluate vendors in CloudFlare CDN, Salesforce, Route 53, and related categories. Use CTO Rank Pro to get verified email and approach directly.

How accurate is Sean Kelly's profile data?

CTO Rank verifies and refreshes profile data weekly. Sean Kelly's profile includes verified contact details, company information, and technology stack data sourced from multiple public and proprietary sources.