Klaviyo
AI Engineer Intern (Summer 2027)
Boston, MA +1 · Internship · Posted Sep 23, 2026
- Location
- Boston, MA
Boston, Massachusetts, United States - Experience
- Previous internship experience in AI, machine learning, or related fields.
- Education
- Pursuing an advanced degree in Computer Science, Artificial Intelligence, Machine Learning, or a related field; graduating in December 2027 or May/June 2028.
About the job
Build scalable backend systems and user experiences that support Klaviyo’s production AI products and agentic AI solutions.
What you'll do
- Design and build backend systems and reliable services for serving AI models at scale.
- Help evolve agent architecture to make AI agents more self-sufficient and performant.
- Collaborate with product, machine learning, and data teams on planning and delivering customer-focused projects.
What they ask for
- Pursuing an advanced degree in Computer Science, Artificial Intelligence, Machine Learning, or a related field; graduating in December 2027 or May/June 2028.
- Previous internship experience in AI, machine learning, or a related field, with interest in building and deploying AI projects.
- Hands-on experience building and deploying generative AI and agentic AI applications into production, including orchestration, evaluation, RAG, and safety guardrails.
- Proficient in Python; experience creating human and automated evaluations of AI model quality.
Nice to have
- FastAPI or Django experience.
- Experience training and deploying ML models, reinforcement learning, Spark, or large-scale backend systems.
Pay
$60 — $60 USD (base salary)
Tools
Python, FastAPI, Django, Spark
AI focus
Build production generative AI applications and agentic AI systems, including model-serving services, agent architecture, orchestration, evaluation, RAG, and safety guardrails.
Model-written summary · the original posting is authoritative