Lead/Staff Full-Stack Engineer (Individual Contributor Focus)6-Month Contract | Outside IR35 | Paddington (3 days/week)We are partnering with a prominent consumer platform undergoing a major digital transformation and seek a Lead/Staff Full-Stack Engineer to join as a hands-on contributor with strong end-to-end ownership.This role involves full-stack development across Back End and Front End, coupled with technical ownership of solutions, focusing on building scalable, high-quality systems within a modern cloud-native environment.About the RoleAs a Lead/Staff Full-Stack Engineer, you will design and deliver comprehensive solutions spanning Back End services, Front End applications, and cloud infrastructure. You will work in a modern, collaborative environment prioritising performance, reliability, and user experience.Key Responsibilities Design and develop full-stack solutions balancing Back End robustness with exceptional user experiencesBuild and maintain Back End services using Kotlin, adhering to clean architecture principlesCreate modern Front End applications using React, Next.js, and TypeScriptOwn API design, integration, and life cycle management (Apigee)Contribute to system design and make informed technical decisionsWrite clean, maintainable, and high-quality code Cloud and DevOps Design and operate cloud-native solutions on Azure or AWSWork with containerised environments such as Docker and KubernetesContribute to CI/CD pipelines and modern delivery practisesImplem