Software Engineer III Typescript​/React JS​/Node

Position: Software Engineer III -– (Typescript/React JS/Node)
Location: Greater London

## .
** About the team:
** 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.

Sci Val is a data-driven product that provides academic and research metrics to customers, enabling insight, analysis, and informed decision-making. The team focuses on building scalable, reliable solutions while continuously improving usability, performance, and data accuracy.
*
* About the role:

** The Software Engineer III performs moderately complex design and development work across modern frontend applications. This role focuses on building accessible, responsive, and performant user interfaces using Type Script, React/Next.js, and associated tooling. The engineer contributes to reusable UI components, partners with backend and product teams, and ensures high-quality user experiences across browsers and devices.
*
* Key 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 optimize 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.
** Requirements:
*** 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 optimization.
* 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 optimization techniques such as code splitting, caching, image optimization, prefetching, and minimizing 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.

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.
** 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…