Staff Software Engineer (Claude.ai)

Join Anthropic, an AI safety and research company, as a UI Software Engineer. In this role, you will focus on building and shipping user-facing features for the web experience of . You will work closely with designers and product managers to bring features from concept to a polished experience, paying attention to accessibility and performance. You will also collaborate with the UI Platform team and help maintain code quality within the consumer product codebase. - Construire et expédier des fonctionnalités orientées utilisateur pour l'expérience web de , en travaillant en étroite collaboration avec les designers pour donner vie à des interactions détaillées et polies. - Traduire l'intention de conception en mises en œuvre de haute qualité, en prêtant une attention particulière à l'accessibilité et aux petits détails qui s'additionnent à une excellente sensation de produit. - Collaborer étroitement avec les chefs de produit pour comprendre les besoins des utilisateurs, façonner la portée des fonctionnalités et faire des compromis éclairés lors de la construction. - Genuinely care about the user experience — not just how something looks, but how fast it loads, how reliably it works, and how it feels across devices. You think about latency and responsiveness the same way you think about design - Are proficient in React, Next.js, and TypeScript, and have experience with Node.js on the backend side of the stack - Are comfortable working in a fast-moving environment where priorities shift and shipping quickly matters - Pick up slack, even if it goes outside your job description - Have 5+ years of experience building consumer-facing web products, with a strong emphasis on UI quality and user experience - Collaborate well with designers and product managers, and enjoy the iterative process of turning a design into something that works beautifully in the browser - Accessibility best practices and building inclusive user interfaces - Performance optimization for consumer web apps — profiling, reducing bundle size, improving rendering performance, and understanding where latency comes from end-to-end - Designing and implementing responsive layouts that work well across screen sizes and devices - Working on products with real-time or streaming interactions (chat interfaces, live updates, etc.) - User research or usability testing, or a track record of incorporating user feedback into product decisions - Working on AI/ML products or in fast-moving consumer product environments - Candidates need not have: - 100% of the skills needed to perform the job - Formal certifications or education credentials - We encourage you to apply even if you do not believe you meet every single qualification