Software Engineer III Typescript​/React JS​/Node

Responsibilities

• Build responsive, accessible, and performant UI components using Type Script and Next.js.
• Implement front-end features with performance and Web Vitals targets in mind.
• Contribute to shared component libraries, ensuring consistency, usability, and adherence to design system standards.
• Collaborate with backend engineers to integrate REST APIs and Node.js services.
• Monitor, analyse, and optimise Core Web Vitals to improve user experience and ensure SEO readiness.
• Write unit, integration, and UI automation tests to maintain quality and prevent regressions.
• Participate in code reviews, maintain clean, maintainable, and performant code.
• Debug and resolve complex issues related to rendering, performance, accessibility, and cross-browser compatibility.
• Assist in deploying, monitoring, and troubleshooting frontend applications hosted on AWS.
• Stay current with emerging frontend technologies and best practices.
• Work effectively within Agile or hybrid development environments.
• Perform all other duties as assigned.

• Good years of professional experience in Frontend or Full-Stack Software Engineering, with a bachelor's degree in computer science, Engineering, or equivalent practical experience.
• Strong hands‑on experience with Type Script, modern JavaScript (ES6+), React, Next.js, and Node.js.
• Proven ability to build responsive, mobile‑first, and accessible user interfaces with a solid understanding of UI/UX best practices.
• In‑depth knowledge of Next.js features, including server‑side rendering (SSR), static site generation (SSG), and incremental static regeneration (ISR).
• Solid understanding of browser fundamentals, DOM behaviour, rendering life cycles, hydration, and frontend performance optimisation.
• Strong familiarity with web accessibility standards such as WCAG, semantic HTML, ARIA roles, and keyboard navigation.
• Experience working with or contributing to component libraries and design systems.
• Strong understanding of Core Web Vitals (LCP, FID, CLS, INP, TTFB) and performance monitoring using tools like Lighthouse, Webpage Test, Chrome Dev Tools, and RUM solutions.
• Experience applying performance optimisation techniques such as code splitting, caching, image optimisation, prefetching, and minimising render‑blocking resources.
• Hands‑on experience using Node.js for API routes, middleware, and backend integrations, with a solid understanding of REST APIs, data‑fetching strategies, and error handling.
• Familiarity with deploying and supporting cloud‑hosted web applications using AWS services such as Cloud Front, S3, Lambda, API Gateway, and Amplify.
• Ability to write clean, maintainable, idiomatic, and well‑tested code following established engineering best practices.

The Sci Val Development Team is a cross‑functional group comprising Frontend, Backend, and Quality Engineers who work closely together. The team collaborates closely with UX and Product to design, build, and deliver high‑quality features efficiently and reliably.

A global leader in information and analytics, we help researchers and healthcare professionals advance science and improve health outcomes for the benefit of society. Building on our publishing heritage, we combine quality information and vast data sets with analytics to support visionary science and research, health education and interactive learning, as well as exceptional healthcare and clinical practice. At Elsevier, your work contributes to the world’s grand challenges and a more sustainable future.

We harness innovative technologies to support science and healthcare to partner for a better world.

Work in a way that works for you We promote a healthy work/life balance across the organization. We offer an appealing working prospect for our people. With numerous wellbeing initiatives, shared parental leave, study assistance, and sabbaticals, we will help you meet your immediate responsibilities and your long‑term goals.

Working flexible hours – flexing the times when you work in the day to help you fit everything in and work when you are the most productive.

Working for you We know that your well‑being and happiness are key to a long and successful career. These are some of the benefits we are delighted to offer:

• Comprehensive Pension Plan
• Home, office, or commuting allowance.
• Generous vacation entitlement and option for sabbatical leave
• Maternity, Paternity, Adoption, and Family Care leave
• Flexible working hours
• Personal Choice budget
• Internal communities and networks
• Various employee discounts
• Recruitment introduction reward
• Employee Assistance Program (global)

Join our team and contribute to a culture of innovation, collaboration, and excellence. If you are ready to advance your career and make a significant impact, we encourage you to apply.