AI Engineer I

Klaviyo is hiring an AI Engineer I (campus/entry-level) in Boston to build AI agents that power marketing automation for 183K+ customers.

What you'll do:

• Design backend systems supporting AI solutions at scale
• Develop production-grade services for deploying AI models
• Develop AI agents that can automatically create and execute marketing or customer experiences, strategies, and campaigns
• Contribute to agentic architecture evolution for improved self-sufficiency
• Create human and automated evaluations for AI model quality assurance
• Collaborate with product, ML, and software engineering teams
• Monitor emerging AI trends and identify implementation opportunities

What we're looking for:

• Pursuing advanced degree (CS, AI, ML, or related) graduating Dec 2025 or May/June 2026
• Previous internship in AI/ML with production deployment experience
• Python proficiency with FastAPI or Django
• Experience building and deploying generative AI and agentic systems
• Demonstrated ability in human and automated evals for model quality

Nice-to-have:

• ML model training and production deployment experience
• Reinforcement learning background
• Large-scale data processing (Spark)
• Backend systems at scale

Location: Boston, MA (3 days/week onsite)
Salary: $104,000 - $156,000 USD
Visa sponsorship available: F-1 Form I-983, H-1B, O-1, E-3, TN status options.