What is a Machine Learning Engineer at Klaviyo?
At Klaviyo, a Machine Learning Engineer plays a pivotal role in driving the intelligence behind a world-class customer data and marketing automation platform. Klaviyo empowers businesses to deliver highly personalized experiences at scale, and machine learning is the core engine that makes this possible. As a Machine Learning Engineer, you will design, build, and scale the algorithms and systems that analyze billions of consumer data points to predict customer behavior, optimize send times, automate audience segmentation, and deliver real-time product recommendations.
This role sits at the critical intersection of data science and large-scale software engineering. You will not merely train models in isolation; you will build production-grade ML pipelines and APIs that process massive throughput with minimal latency. Your work directly impacts hundreds of thousands of brands and millions of consumers daily, turning raw transactional and behavioral data into actionable, predictive marketing insights.
The engineering culture at Klaviyo is highly collaborative, data-driven, and focused on tangible customer value. Because the platform handles immense scale, your role requires a deep appreciation for system performance, clean code, and robust data architecture. If you thrive on solving complex distributed computing challenges and translating advanced statistical concepts into scalable production systems, this position offers an exceptionally high-impact environment.


