Senior Software Engineer - Web Platform

Our Web Platform team is responsible for building and maintaining the critical systems that power the company's frontend development across web, desktop, and mobile platforms. These systems support hundreds of engineers daily, process thousands of builds and deployments, and enable rapid feature delivery through robust tooling infrastructure. Through developing and operating foundational JavaScript build systems - including linters, bundlers, package managers, and CI/CD automation - our work allows internal developers to ship features quickly and safely while ensuring optimal performance, correctness, and developer ergonomics. This team also owns the localization and translation systems that power the strings and copy found across all of our apps and platforms. As a Senior Software Engineer on this team, you will continuously improve our build tooling, developer workflows, and infrastructure - affecting the productivity of every frontend engineer at the company and ultimately every user interaction on the platform! What You'll Be Doing: Building and maintaining the tools, pipelines, and processes that keep frontend development at the company fast, safe, and reliable. Becoming an expert in JavaScript tooling and serving as a resource to help teams solve any and all problems they encounter during development. Refactoring and upgrading the codebase to pay down tech debt, keep up with the state of the art in web development, and drive progress toward better maintainability. Writing new and unique tools based on the specific needs of the company’s frontend projects to make everything Just Work. Digging deep into bundlers, linters, formatters, editor plugins, and more to optimize their performance, adopt and test new features early on, and continuously improve the experience for the developers using them. What you have: 3+ years of working with JavaScript tools and the Node.js ecosystem. Familiarity with and a desire to work across multiple programming languages (generally including JavaScript/TypeScript, Python, Rust, Kotlin, Go, and Swift). Experience developing and maintaining CLI tools and packages in JavaScript. A strong sense for writing maintainable code and deliberately documenting for the future. Understanding of all of the tools involved in frontend development and how they work together. Bonus Points: Familiarity and experience with localization in frontend applications. Familiarity with React Native, related tools (Metro, Hermes), and bridging between JavaScript and native code. Experience with directly maintaining or writing plugins for tools like bundlers, linters, or formatters in any language. Experience with CI/CD orchestration, Cloudflare workers, cloud storage providers, and other application deployment processes. Candidates must reside in or be willing to relocate to the San Francisco Bay Area (Alameda, Contra Costa, Marin, Napa, San Francisco, San Mateo, Santa Clara, Solano, and Sonoma counties). Relocation assistance may be available. The US base salary range for this full-time position is $196,000 to $220,500 + equity + benefits. Our salary ranges are determined by role and level. Within the range, individual pay is determined by additional factors, including job-related skills, experience, and relevant education or training. Please note that the compensation details listed in US role postings reflect the base salary only, and do not include equity, or benefits. the company is committed to inclusion and providing reasonable accommodations during the interview process. We want you to feel set up for success, so if you are in need of reasonable accommodations, please let your recruiter know. #J-18808-Ljbffr