AI Engineer I at Klaviyo in Boston, MA

Summary: Klaviyo is an innovative company focused on empowering creators through first-party data solutions. The AI Engineer I role involves designing and building scalable backend systems to support AI products and solutions, collaborating closely with product managers and engineers to drive impactful projects. Responsibilities: - Design and build backend systems that support scaling our AI solutions for 183K+ customers - Develop robust, reliable and scalable services to serve AI models in production environments - Contribute to evolving our agentic architecture — making our AI agents more self-sufficient and performant - Contribute to a culture of ownership, experimentation, and customer-centric product thinking - Engage with internal stakeholders to understand their needs and resolve blockers - Stay abreast of emerging AI trends and technologies, identifying and leveraging opportunities for their application within Klaviyo’s ecosystem - Work with the team on project planning and defining achievements, identifying dependencies, and meeting business goals Required Qualifications: - Pursuing an advanced degree in Computer Science, Artificial Intelligence, Machine Learning, or a related field, Graduating in December 2025 or May/June 2026 - Previous internship experience in AI, machine learning, or related fields, with a strong interest in building and deploying AI projects - Have hands-on experience building and deploying generative AI and agentic AI applications into production - Proficient in Python and modern backend frameworks (FastAPI, Django preferred) - Experience creating human and automated evals to ensure high AI model quality - Able to thrive in a fast-moving, startup-like environment Preferred Qualifications: - Trained ML models in the past and deployed them in production systems to generate impact to businesses - Experience in reinforcement learning - Experience with large-scale data processing tools including Spark - Experience building large scale backend systems Required Skills: Generative AI applications, Agentic AI applications, Python Important Skills: Backend frameworks, Machine Learning Nice-to-Have Skills: FastAPI, Django, Reinforcement learning, Large-scale data processing, Soft skills Benefits: Participation in the company’s annual cash bonus plan, Variable compensation (OTE) for sales and customer success roles, Equity, Sign-on payments, A comprehensive range of health, welfare, and wellbeing benefits based on eligibility