Principal Front-End Engineer
Employment Info
JOB DETAILS
Requirements
- React at depth: Not just a user of React, you understand how React is built. Reconciliation, rendering, the server component model, the hooks model. You”ve shaped React decisions at scale, ideally with open-source contributions or production work that pushed the framework”s limits.
- Performance at scale: Driven measurable performance gains on a complex, mature web product. You know how to measure what matters and how to filter the noise. Bonus if you”ve shipped server-side rendering or React Server Components in production.
- Principal altitude: You”ve owned problems where the right answer didn”t exist when you started. You found it through prototyping and measurement, not a design doc written upfront.
- Org-wide influence: You”ve shipped something foundational on a mature product – a bundler migration, an SSR rollout, a rendering model shift – without disrupting the teams building on top of the platform. You cut through the noise and bring a large number of leaders to consensus on a clear and compelling technical direction.
- Active individual contribution: You’re still writing and committing code on a day-to-day basis.
- AI fluency: Used agentic orchestration in real work. Have a view on what changes for frontend engineering when AI is a daily part of the workflow.
- React internals: Reconciliation, the rendering model, server components, suspense
- TypeScript depth: Production-grade fluency, not surface familiarity
- SSR and RSC: Server-side rendering and React Server Components in production
- Frontend-backend communication: How pages get served, how requests get batched, where the round trips live
- Performance measurement: Real User Monitoring, synthetic testing, the metrics that matter
- Offline resilience: Progressive enhancement strategies for complex web applications
- Deep fundamentals: Engineering fundamentals from a Computer Science background, including data structures, complexity, the hard parts
Desired Qualifications
- Open-source contributions: React, Next.js, or the broader frontend ecosystem
- Live migrations: Experience evolving a complex frontend product without disrupting the teams building on top of it
- Edge runtimes: Cloudflare Workers, Fastly, or equivalent
- Backend partnership: Cross-functional work with backend platform teams on the request/response contract
Are you interested in this position?
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