Senior Software Engineer, Agent Platform
As a Senior Software Engineer, Agent Platform at Klaviyo, you will design and scale backend systems for AI products and agent solutions. This role focuses on influencing architecture, async processing, and distributed systems, working closely with product managers, ML engineers, and data scientists to deliver scalable AI solutions.
At Klaviyo, we believe the future of software lies not in productivity tools for human users but in software that can run and optimize itself based on outcome or reward metrics. We’ve built the infrastructure and application that serve as the interface between businesses and consumers. We now have over 167,000 customers, billions of consumer profiles, and hundreds of billions of customer messages and follow-on conversion data. We have a big opportunity to build state-of-the-art AI and machine learning technologies at Klaviyo to power our products and develop AI agents that can automatically create and execute marketing or customer experiences, strategies, and campaigns for any business.
As a Senior Software Engineer, Agent Platform, you’ll play a key role in designing and scaling the backend systems that power our AI products and agent solutions. This backend-heavy role gives you opportunities to influence architecture, async processing, and distributed systems. You’ll collaborate closely with product managers, ML engineers, and data scientists to deliver real-world impact at scale.
This role is hybrid and based in Boston.
Posted June 2, 2026