Sr. Web Engineer (X)

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today, SpaceX is actively developing the technologies to make this possible, with the ultimate goal of making life multiplanetary and expanding consciousness to the stars. SpaceXSI is building Super Intelligence to help humanity understand the universe. Our teams are building the full Super Intelligence stack: from our Colossus supercomputers, to Grok models, to our suite of applications, including Grok Bot, Grok Build, Grok Imagine, Grok Voice, and X. We're creating a powerful flywheel where more compute trains better models, better models power more useful products, and what we learn from people using those products shapes what we build next. SR. WEB ENGINEER (X) We’re looking for exceptional Fullstack / Web Engineers that can work across the stack but have a passion for frontend development and a keen eye for design. You'll architect and optimize user-facing features that power real-time conversations for millions worldwide. Dive into cutting-edge technologies and scalable backend systems, collaborating with top-tier talent to push the boundaries of web performance and innovation. You have the ability to thrive in a fast-paced environment, where you proactively tackle high-impact challenges that shape the future of social media—perfect for engineers passionate about crafting seamless, responsive experiences that drive global engagement and redefine digital interaction. RESPONSIBILITIES: Own and drive features from inception and design to implementation and launch, being the web expert on your team Build and maintain high-quality, performant products and features, leveraging the most modern and cutting edge web standards, technologies, frameworks, and AI tooling Responsible for fullstack features, including user dashboards, personalized experiences, content delivery, interactive tools, assessments, and real-time analytic Lead architecture, scalability, and reliability decisions for high-concurrency, low-latency systems Uphold engineering excellence via testing, monitoring, deployment, and secure data handling Drive technical/product decisions with teams and deploy global features to maximize user value BASIC QUALIFICATIONS: 5+ years of experience in a web frontend role, working on a large scale consumer app Experience in TypeScript, Node.js, and modern web frameworks (e.g., React) Experience in modern CSS/SASS PREFERRED SKILLS AND EXPERIENCE: Experience in high-quality UI and UX design Proven track record of optimizing applications for performance, security, and offline functionality Experience with backend development, proficiency in one or more of the following: Rust, Go, Java, Python, Scala COMPENSATION AND BENEFITS: $180,000 - $330,000 USD Base salary is just one part of our total rewards package at SpaceXSI, which also includes equity, comprehensive medical, vision, and dental coverage, access to a 401(k) retirement plan, short & long-term disability insurance, life insurance, and various other discounts and perks. SpaceXSI is an equal opportunity employer. For details on data processing, view our Recruitment Privacy Notice .