Principal Software Engineer, Front End Web UI Platform

GitHub, Inc.•UNAVAILABLE, UNAVAILABLE

7d•Remote

About The Position

GitHub's Core UX organization owns the frontend platform behind GitHub.com: the architecture, tooling, and standards that let hundreds of engineers ship UI that is fast, accessible, consistent, and reliable. We're looking for a Principal Software Engineer to set technical direction across that platform and raise the ceiling on what the frontend can do for millions of developers. This is a systems role, not a single-team role. You'll work across the concerns that overlap in frontend at scale: performance, accessibility, UX consistency, and availability. Much of the work is evolving a large, actively developed codebase rather than starting from scratch, so success depends as much on migration strategy and cross-team alignment as on architecture. You'll shape paved paths that many teams adopt, not one-off solutions that rely on heroics. You'll partner closely with other Principal and Staff engineers, Engineering Managers, and Product and Design leadership to decide where the platform goes next and to drive that direction to real, shipped outcomes.

Requirements

11+ years experience in Software Engineering, Computer Science, or related technical discipline with proven experience maintaining and delivering production software coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, Go, Ruby, Rust, or Python OR Associate's Degree in Computer Science, Electrical Engineering, Electronics Engineering, Math, Physics, Computer Engineering, Computer Science, or related field AND 10+ years experience in Software Engineering, Computer Science, or related technical discipline with proven experience maintaining and delivering production software coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, Go, Ruby, Rust, or Python OR Bachelor's Degree in Computer Science or related field AND 9+ years experience in Software Engineering, Computer Science, or related technical discipline with proven experience maintaining and delivering production software coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, Go, Ruby, Rust, or Python OR Master's Degree in Computer Science, Electrical Engineering, Electronics Engineering, Math, Physics, Computer Engineering, Computer Science, or related field AND 7+ years experience in Software Engineering, Computer Science, or related technical discipline with proven experience maintaining and delivering production software coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, Go, Ruby, Rust, or Python OR Doctorate in Computer Science, Electrical Engineering, Electronics Engineering, Math, Physics, Computer Engineering, Computer Science, or related field AND 5+ years experience in Software Engineering, Computer Science, or related technical discipline with proven experience maintaining and delivering production software coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, Go, Ruby, Rust, or Python OR equivalent experience.

Nice To Haves

Deep knowledge of React internals and server-side rendering, with experience modernizing frontend systems in large, multi-team codebases.
Track record of improving web performance (Core Web Vitals, interaction latency, bundle size) through systematic, data-driven work.
Experience leading cross-team frontend migrations and rollouts, managing sequencing, deprecation, and incremental adoption across many engineers.
Strong command of web platform and accessibility fundamentals (browser APIs, a11y standards, TypeScript, CSS) and how they interact with framework-level abstractions.
Experience building design systems, shared component libraries, or paved-path tooling that many teams adopt.

Responsibilities

Own the technical direction for GitHub's web UI platform across performance, accessibility, consistency, and availability, balancing long-term architecture with hands-on execution.
Drive large cross-team initiatives and migrations, sequencing the work so the platform moves forward without disrupting active product development.
Establish patterns, standards, and paved paths for frontend development that lower cognitive load and scale across many teams.
Produce architecture and design proposals, evaluate tradeoffs honestly, and build alignment across engineering, product, and design.
Mentor and raise the bar for engineers at every level through design review, code review, and pairing.
Represent frontend platform priorities to leadership, securing the support and resourcing needed to deliver.