Staff Software Engineer, Front End

Meta is seeking a Staff Software Engineer to help shape the future of JavaScript tooling and developer infrastructure across Meta's family of products. In this role, you will design and implement JS compiler enhancements, build and improve developer tools such as linters and test runners, and integrate LLM-powered capabilities into developer workflows. You will drive the architecture and technical direction of JS tooling systems that empower thousands of engineers to build faster, safer, and more efficiently at scale. Software Engineer, Front End Responsibilities: Lead the design and implementation of compiler passes and JavaScript transformations that improve code quality, performance, and developer experience across Meta's codebaseBuild and enhance developer tooling infrastructure including linters, test runners, and code analysis tools used by thousands of engineersIntegrate LLM-powered capabilities into developer workflows, accelerating code generation, automated fixes, and intelligent tooling assistanceDrive end-to-end delivery of major JS tooling initiatives, coordinating dependencies across engineering, product, and infrastructure teamsIdentify and resolve complex performance bottlenecks in build systems, bundlers, and JavaScript execution to ensure fast developer feedback loopsEstablish and evolve best practices for JavaScript tooling, including AST manipulation, static analysis, and incremental compilation strategiesMentor other engineers on compiler design, tooling architecture, and AI-assisted development practicesPartner with cross-functional stakeholders to independently drive technical decisions and roadmap priorities for developer toolsProactively identify and address technical debt in tooling infrastructure, lead migrations to modern standards, and ensure maintainability at scaleCommunicate technical strategy, trade-offs, and roadmap decisions clearly to both engineering and non-engineering audiences, including leadership Minimum Qualifications: Bachelor's degree in Computer Science, Computer Engineering, relevant technical field, or equivalent practical experience8+ years of experience in front-end software engineering, including JavaScript, HTML, and CSSExperience leading and delivering major front-end initiatives involving complex system architecture, cross-team coordination, and phased rolloutsExperience designing and building scalable, performant, and accessible user interface systems for products with large user basesExperience using data, experimentation frameworks, and telemetry to drive front-end product and engineering decisionsExperience communicating technical decisions and trade-offs in writing to both technical and non-technical stakeholders Preferred Qualifications: Experience with modern front-end frameworks such as React, including deep knowledge of rendering performance, state management, and component lifecycleExperience adhering to and implementing responsible, ethical AI practices (e.g., risk assessment, bias mitigation, quality and accuracy reviews)Experience integrating AI tools into front-end development workflows to drive measurable gains in engineering efficiency or product qualityDemonstrated ongoing AI skill development (e.g., prompt/context engineering, agent orchestration) and staying current with emerging AI technologiesExperience with browser performance profiling, Core Web Vitals optimization, and progressive enhancement techniques for diverse device and network conditionsExperience building and maintaining design systems or shared component libraries used across multiple product teamsDemonstrated ability to integrate AI tools to optimize/redesign workflows and drive measurable impact (e.g., efficiency gains, quality improvements) About Meta: Meta builds technologies that help people connect, find communities, and grow businesses. When Facebook launched in 2004, it changed the way people connect. Apps like Messenger, Instagram and WhatsApp further empowered billions around the world. Now, Meta is moving beyond 2D screens toward immersive experiences like augmented and virtual reality to help build the next evolution in social technology. People who choose to build their careers by building with us at Meta help shape a future that will take us beyond what digital connection makes possible today—beyond the constraints of screens, the limits of distance, and even the rules of physics. Meta is proud to be an Equal Employment Opportunity and Affirmative Action employer. We do not discriminate based upon race, religion, color, national origin, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender, gender identity, gender expression, transgender status, sexual stereotypes, age, status as a protected veteran, status as an individual with a disability, or other applicable legally protected characteristics. We also consider qualified applicants with criminal histories, consistent with applicable federal, state and local law. Meta participates in the E-Verify program in certain locations, as required by law. Please note that Meta may leverage artificial intelligence and machine learning technologies in connection with applications for employment. Meta is committed to providing reasonable accommodations for candidates with disabilities in our recruiting process. If you need any assistance or accommodations due to a disability, please let us know at accommodations-ext@meta.com. $183,997/year to $257,000/year + bonus + equity + benefits Individual compensation is determined by skills, qualifications, experience, and location. Compensation details listed in this posting reflect the base hourly rate, monthly rate, or annual salary only, and do not include bonus, equity or sales incentives, if applicable. In addition to base compensation, Meta offers benefits. Learn more about benefits at Meta.