Elsevier is seeking a Software Engineer III to join their Leyden Design System team, a collaborative group of designers and developers creating integrated UX and code components used across 50 teams. This role focuses on front-end development, building accessible and performant web applications that serve hundreds of thousands of STEM professionals worldwide. The position involves working with React, JavaScript, and modern web technologies while maintaining high standards for accessibility and performance. As part of Elsevier, a global leader in information analytics, you'll contribute to solutions that help advance science and improve healthcare outcomes. The role offers comprehensive benefits, flexible working arrangements, and opportunities for professional growth in an innovative, inclusive environment. The Leyden team's work directly impacts Elsevier's mission of supporting researchers, healthcare professionals, and educational institutions worldwide. This position combines technical expertise with collaborative teamwork, making it ideal for developers passionate about creating impactful user experiences at scale.