Klaviyo Campus
Open positions
AI Engineer I
Early-career AI engineer at Klaviyo building backend systems and AI agents for its marketing platform serving 200K+ customers. Day to day is backend-heavy Python work (FastAPI/Django): scalable services, async pipelines, and deploying generative/agentic AI in production, including orchestration, RAG, and evals.
AI Engineer Intern (Summer 2027)
An 11-week paid summer engineering internship (June 1–August 13) at Klaviyo's Boston headquarters; interns work on-site 5 days a week and are placed on a full-stack, back-end, or front-end team building Klaviyo's ecommerce data and personalization platform.
Machine Learning Engineer Internship-Summer 2027
An 11-week paid Summer 2027 internship (June 1–Aug 13) at Klaviyo's Palo Alto Tech Innovation Hub, working with ML and full-stack engineers to build, deploy, and scale models using deep learning, NLP, recommender systems, and generative AI on Klaviyo's massive customer data streams. In office 5 days a week; open to advanced-degree students.
Software Engineer Co-op (Spring 2027)
Paid software engineering co-op at Klaviyo's Boston HQ (Jan 4–Jun 25, in office 5 days/week), embedded on a full-stack, back-end, or front-end team to own features end to end for a marketing platform with 180K+ customers. Stack includes Python, Go, TypeScript/React, MySQL, Kafka, Redis, and AWS; AI tool use is expected.
Software Engineer Intern (Summer 2027)
An 11-week paid, in-office summer software engineering internship at Klaviyo in Boston. Interns are embedded on full-stack, back-end, or front-end teams to own features end-to-end—writing, testing, shipping, and debugging production code—using Python, Django, TypeScript, React, Go, and data infra like Kafka, Cassandra, Clickhouse, and AWS, with AI tools central to daily work.
Software Engineer I
Entry-level (new grad) Software Engineer at Klaviyo in Boston: you own features end to end — writing, testing, documenting, deploying, and operating production code on a full-stack, back-end, or front-end team. Stack includes Python/Go, TypeScript/React, and data infra like Kafka, Cassandra, Redis, and AWS, with an AI-first way of working.