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Software Engineering Co-op at Klaviyo - ApplyBlast

Software Engineering Co-op

Klaviyo

1 month ago

3.3 on Glassdoor

Boston, Massachusetts, United States

Onsite

Internship

Intern

0 applicants

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About this role

The Software Engineering Co-op at Klaviyo is a paid, in-person program based in Boston, MA, where co-ops work on fast-paced engineering teams to build scalable systems and ship code that impacts thousands of customers. Participants will own features end-to-end, debug production issues, and leverage AI tools to improve workflows and product performance. The role offers hands-on experience with full-stack development, collaboration with experienced engineers, and exposure to Klaviyo's core infrastructure and product pillars.

Responsibilities

Own features that customers rely on daily to reach their consumers and grow their business
Take responsibility for the mission, technical direction, and operation of projects with immediate impact
Build and ship features that meet a high bar and grow your technical skills while you do it

Skills

About Klaviyo

klaviyo.com

Headquarters

Boston, Massachusetts, United States

Company Size

1001-5000 employees

Founded

2012

View Profile

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.