Klaviyo
Senior Machine Learning Platform Engineer
$148K–$222K
Boston, MA +1 · Senior · Full-time · Posted Oct 22, 2026
- Location
- Boston, MA
Boston, Massachusetts, United States - Experience
- 7+ years.
About the job
Build and operate core machine learning and AI platforms, tools, and infrastructure that enable teams to train, deploy, evaluate, and scale production models and features.
What you'll do
- Design and scale ML platform architecture, including feature storage and real-time retrieval for training and inference.
- Lead technical execution through code and design reviews, high-impact implementation, and engineering mentorship.
- Improve reliability, observability, and cost efficiency of ML workloads in collaboration with ML, product, data science, and infrastructure teams.
What they ask for
- 7+ years of experience as a software engineer, ML platform engineer, or similar, building backend or distributed systems.
- Demonstrated experience designing and launching AI/ML systems in production at scale.
- Strong proficiency in Python or a similar backend language such as Go, Java, or Scala.
- Experience with cloud infrastructure and platform fundamentals, and familiarity with data-intensive systems.
Pay
$148,000 — $222,000 USD base salary
Tools
Python, Go, Java, Scala, AWS, kubernetes, spark, ray-data
AI focus
Build platforms and infrastructure for production AI/ML and LLM systems, including model training, inference, evaluation, monitoring, feature data, and personalization products.
Model-written summary · the original posting is authoritative