Notion Software Engineer, Web Infrastructure at Notion improves web client performance and resilience. The role involves investigating bottlenecks, building performance tests, and partnering with engineers to deploy safe changes.
Responsibilities
Web Infrastructure builds the foundations behind Notion’s web clients so product engineers can ship fast, reliable, accessible experiences. As a junior engineer on the team, you’ll help make those experiences measurably faster and more resilient. You’ll investigate performance bottlenecks, improve how the client loads and responds, and help build tools that catch regressions earlier. You don’t need to arrive as a performance expert; we’re looking for strong fundamentals, curiosity, and a desire to learn by shipping useful work.
This role can be based in either San Francisco or New York City. We work from our offices on Mondays, Tuesdays and Thursdays (our Anchor Days) because we do our best thinking and building together in person. We’re looking for someone who’s excited to work alongside the team during those days.
What You'll Achieve:
Use browser tools and real-world data to investigate page-load and interaction bottlenecks, then turn findings into focused improvements.
Help build or improve performance tests, dashboards, and guardrails that make regressions easier to catch during development and rollout.
Ship scoped improvements to client loading, rendering, asset delivery, or caching, measuring their impact and checking for regressions.
Partner with Web Infrastructure and product engineers to land changes safely across Notion’s web clients.
Document what you learn and share clear recommendations so teams can make better performance tradeoffs.
Skills You'll Need to Bring:
Solid programming fundamentals and some experience building software with JavaScript or TypeScript; familiarity with React or another component-based UI framework is helpful.
Curiosity about how browsers work and how code affects page load, rendering, and interaction responsiveness.
A thoughtful debugging approach: you can break a problem down, gather evidence, and ask for help when you’re stuck.
