Principal Software Engineer, Frontend
Core
Lead the frontend technical direction for the Trellis design system and component library, driving the evolution of HubSpot's UI modernization and defining accessibility models.
Role type
Principal Software Engineer (Frontend/Design Systems)
Builds
A world-class component library and design system foundation for hundreds of product engineering teams.
Domain
SaaS / Customer Platform / Design Systems
Deliverable
production ML models | product features
Required skills
React, TypeScript, modern JavaScript frameworks, architecture, infrastructure, component libraries, tooling, accessibility, coding agents
Preferred skills
Experience with BaseUI, StyleX, Cloudflare Workers, migration tooling, codemods, automated refactoring pipelines
Technologies
React, TypeScript, JavaScript, BaseUI, StyleX, Cloudflare Workers
Responsibilities
Drive the evolution of the Trellis design system during the 2026 UI modernization; Define and develop internal tooling to support Trellis evolution at scale; Define and develop migration tooling for Canvas applications to Trellis; Mentor Staff and Senior engineers; Partner with engineering leads, PMs, and UX to align frontend direction with product roadmap.
Seniority
Principal, hands-on IC with organizational influence