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© All Rights Reserved. ApplyBlast.com
Klaviyo
A Senior Backend Software Engineer at Klaviyo owns and builds mission-critical features for the Messaging Infra organization, handling billions of daily messages across email, SMS, and push channels. The role involves designing highly scalable systems, refining engineering practices, mentoring teams, and collaborating with cross-functional stakeholders to drive platform reliability and growth.
Headquarters
Boston, Massachusetts, United States
Company Size
1001-5000 employees
Founded
2012
Klaviyo is a B2C CRM and marketing automation platform that unifies AI-powered email and SMS to help ecommerce brands drive growth and retention. It uses customer data, advanced segmentation, and automation flows to deliver personalized, omnichannel experiences across email, SMS, WhatsApp, and more — including AI-driven capabilities via K:AI Agents. Klaviyo emphasizes measurable results with analytics, testing, and integrations with major ecommerce platforms to boost revenue and lifetime value. Companies use it to build targeted lifecycle campaigns, personalized messaging, and data-driven retention strategies at scale.
Headquarters
San Francisco, CA
Company Size
201-500 employees
Founded
2018
Industry
Technology
Glassdoor Rating
4.2 / 5
Sarah Johnson
Chief Executive Officer
Michael Chen
Chief Technology Officer
Emily Williams
VP of Engineering
David Rodriguez
VP of Product
Jessica Thompson
Chief Financial Officer
Andrew Park
VP of Sales
View leadership team, funding history,
and employee contacts for Klaviyo.
26% below the average for this role
Klaviyo and Shopify Deepen Integration
3 days ago
