Full-stack Software Engineer Co-op (Fall 2026)

Klaviyo(8 days ago)

Boston, MAOnsiteInternshipIntern$53,000 - $53,000Engineering

About this role

A Full-stack Software Engineering Co-op at Klaviyo is a paid, semester-long position embedded within an engineering team where students gain hands-on production experience and mentorship from experienced engineers. Co-ops participate in Klaviyo’s onboarding program, build technical foundations, and make meaningful contributions to the company’s engineering efforts. The role is based at Klaviyo’s Boston headquarters and emphasizes learning and professional development.

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Required Skills

Python
Django
TypeScript
React
MySQL
Cassandra
ClickHouse
Kafka
Redis
AWS

+2 more

Qualifications

Pursuing Degree in Computer Science or Related Field
Graduating Dec 2026 or May/June 2027
Previous Software Engineering Internship/Co-op

About Klaviyo

klaviyo.com

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.