React and TypeScriptNext.js (preferred) and/or .NET CoreFront End Software Engineering Lead (React, TypeScript, Next.js and .NET Core) - 3 months rolling - Inside IR35 - Remote First with occasional site visits to Cardiff - £525 per day.This is an urgent Front End Software Engineering Lead with strong React and TypeScript and and ideally experience with Next.js and .NET Core.The contract is initially 3 months at least, however, the project has scope until March 2026.Ideally the client prefer someone in Cardiff, you can be fully remote but local to Cardiff preferred for Ad Hoc sessions at the clients request.We are looking to appoint a highly capable Front End Software Engineering Team Lead with deep Front End engineering expertise to lead the design and implementation of a new, strategic customer-facing portal. The portal will integrate with an internal case management system and is being delivered as a bilingual digital service.This is a hands-on leadership role where you will combine technical delivery with team mentorship, solution design, and collaboration with architects, developers and client stakeholders. The role requires strong proficiency in React and ideally experience with Next.js and .NET Core. You will set technical direction, ensure code quality and accessibility, and help establish an engineering culture rooted in best practice and continuous improvement.Essential Skills and ExperienceProven experience in a Team Lead or Tech Lead role, ideally within public se