Staff Frontend Engineer — JS Tooling & AI-Driven DevTools

Meta; Madison (WI); On-site; USD 184,000 - 257,000; Full time

Job summary

Meta is seeking a Staff Software Engineer to shape JavaScript tooling and developer infrastructure across its products. You will design and implement JS compiler enhancements, and build tooling like linters and test runners while integrating LLM-powered capabilities into workflows.

You will drive architecture and technical direction of JS tooling systems, empowering thousands of engineers to build faster, safer, and more efficiently at scale.

Qualifications

• Bachelor's degree in Computer Science, Computer Engineering, or equivalent practical experience.
• 8+ years of front-end software engineering, including JavaScript, HTML, and CSS.
• Experience leading front-end initiatives involving complex system architecture, cross-team coordination, and phased rollouts.
• Experience designing and building scalable, performant, and accessible UI systems for products with large user bases.
• Experience using data, experimentation frameworks, and telemetry to drive front-end product and engineering decisions.
• Experience communicating technical decisions and trade-offs in writing to both technical and non-technical stakeholders.

Responsibilities

• Lead the design and implementation of compiler passes and JavaScript transformations that improve code quality, performance, and developer experience.
• Build and enhance developer tooling infrastructure including linters, test runners, and code analysis tools used by thousands of engineers.
• Integrate LLM-powered capabilities into developer workflows, accelerating code generation, automated fixes, and intelligent tooling assistance.
• Drive end-to-end delivery of major JS tooling initiatives, coordinating dependencies across engineering, product, and infrastructure teams.
• Identify and resolve complex performance bottlenecks in build systems, bundlers, and JavaScript execution to ensure fast developer feedback loops.
• Establish and evolve best practices for JavaScript tooling, including AST manipulation, static analysis, and incremental compilation strategies.
• Mentor other engineers on compiler design, tooling architecture, and AI-assisted development practices.
• Partner with cross-functional stakeholders to independently drive technical decisions and roadmap priorities for developer tools.
• Proactively identify and address technical debt in tooling infrastructure, lead migrations to modern standards, and ensure maintainability at scale.
• Communicate technical strategy, trade-offs, and roadmap decisions clearly to both engineering and non-engineering audiences, including leadership.

Skills

JavaScript

React

Frontend Architecture

Linters

Test Runners

LLM AI

Performance

Cross-team Leadership

Mentoring

Education

Bachelor's degree in CS or related field

Tools

Linters

Test Runners

Code Analysis Tools

Job description

Meta is seeking a Staff Software Engineer to shape JavaScript tooling and developer infrastructure across its products. You will design and implement JS compiler enhancements, and build tooling like linters and test runners while integrating LLM-powered capabilities into workflows.

You will drive architecture and technical direction of JS tooling systems, empowering thousands of engineers to build faster, safer, and more efficiently at scale.