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Software Engineering Intern at Klaviyo - ApplyBlast

Software Engineering Intern

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 Intern at Klaviyo will work within a fast-paced engineering team to build scalable, high-performance systems and ship features that impact thousands of customers worldwide. This role involves solving complex technical problems, owning the full lifecycle of code from development to production, and leveraging AI tools to enhance workflows and efficiency. Interns will gain hands-on experience debugging real-world issues, contributing to documentation, and collaborating closely with experienced engineers to drive product success.

Responsibilities

Own features and take responsibility for mission and technical direction
Build and ship features meeting high bar while growing technical skills
Debug real issues locally and in production and contribute to documentation

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.