Senior Machine Learning Engineer II - Remote

Overview

HubSpot is building the next generation of AI experiences across our go-to-market products. We’re hiring a Senior Machine Learning Engineer II to join the Flywheel Context (Contacts) team, where you’ll build the context platform layer that powers accurate, high-performing AI assistants and agents.

In Short

• Design, build, and operate backend services that power context retrieval and enrichment for AI assistants and agents.
• Build platform capabilities for storing, searching, and retrieving insights across HubSpot’s GTM data.
• Develop systems to manage and compress context when it gets large.
• Create tooling that allows other engineering teams to ship assistants/agents faster.
• Build and maintain evaluation and measurement approaches to ensure context quality and answer accuracy.
• Collaborate closely with sister platform teams and downstream product engineering teams.
• Own end-to-end delivery: architecture, implementation, observability, performance, reliability, and iteration.

Requirements

• Strong track record shipping production backend systems as a senior engineer.
• Professional Java experience building maintainable, testable services in production.
• Experience implementing ML workflows in production.
• Comfort working with data tooling and data-intensive systems.
• Experience operating software at meaningful scale.
• Strong engineering fundamentals: system design, code quality, debugging, observability, and operational excellence.

Benefits

• Flexible work environment.
• Opportunities for professional growth.
• Collaborative team culture.
• Access to cutting-edge technology.