# Principal Platform Engineer, Design Tools at Yahoo

- Company: Yahoo
- What the company does: Latest news coverage, email, free stock quotes, live scores and video are just the beginning. Discover more every day at Yahoo! Backed by Sequoia.
- Company website: https://www.yahoo.com/
- Type: Startups
- Level: Principal and up
- Location: United States of America
- Work setup: On-site
- Posted: 2026-10-14
- Apply by: 2026-11-28
- Apply: https://ouryahoo.wd5.myworkdayjobs.com/en-US/careers/job/United-States-of-America/Principal-UI-Engineer---Design-Developer-Tools_JR0027436?utm_source=1752vc&utm_medium=careers
- Page: https://www.1752.vc/careers/jobs/yahoo-principal-platform-engineer-design-tools/

## About the role

Yahoo serves as a trusted guide for hundreds of millions of people globally, helping them achieve their goals online through our portfolio of iconic products. For advertisers, Yahoo Advertising offers omnichannel solutions and powerful data to engage with our brands and deliver results. Found on 1752vc Careers, the job board for startup and VC roles.

## What they're looking for

- 8+ years of experience designing, building, and operating production-scale web platforms, with significant time on both front-end and back-end/platform work
- Advanced mastery of modern TypeScript, JavaScript, React, and server-side runtimes (Node.js or Bun)
- Hands-on experience with real-time data models, WebSockets, and collaborative editing (CRDTs such as Yjs or Automerge, or OT), with a solid grasp of consistency, concurrency, and failure modes
- Strong SQL and relational database (PostgreSQL) foundations, including schema evolution and access-control patterns
- A track record of diagnosing and resolving complex performance issues in the browser (rendering, Web Vitals, memory) and on the server (latency, throughput, resource usage), using profilers, heap snapshots, and tracing
- Experience running production services: metrics, alerting, structured logging, on-call, and designing for graceful degradation


Source: 1752vc Careers, https://www.1752.vc/careers/jobs/yahoo-principal-platform-engineer-design-tools/