One of the UK’s most iconic omni-channel retailers is looking for a Senior Java Developer to join their expanding digital engineering function. This position requires deep expertise in Kotlin or modern Java, strong architectural understanding of microservices, and a passion for technical leadership and mentoring. Experience working within e-commerce, mobile, or customer-facing digital platforms is highly desirable. This role is a remote position. You’ll have the opportunity to work across a modern engineering environment, collaborate with agile product teams, and contribute to a high-traffic platform used by millions of customers. Key Responsibilities: • Design, build, and maintain scalable, high-performance services using Kotlin or Java • Provide technical leadership and mentoring to other engineers in the team • Contribute to solution architecture and strategic technical direction • Build, integrate, and maintain REST APIs and backend services • Champion best practices in software quality, CI/CD, observability, and DevOps • Collaborate with cross-functional teams including Product, QA, and DevOps • Optionally take on people management responsibilities for engineers • Stay updated with emerging backend and cloud technologies Key Skills & Experience • 5+ years of back-end development experience using Kotlin or modern Java • Expertise in microservice architectures and frameworks like Spring Boot or http4k • Deep understanding of RESTful API design and integration • Proven experience mentoring engineers and contributing to high-performing teams • Familiarity with Agile (Scrum or Kanban), TDD, and pair programming practices • Experience with CI/CD pipelines and automation tooling • Knowledge of Docker, Kubernetes, Jenkins, or GitLab CI • Experience with cloud platforms such as AWS, GCP, or Azure Apply now to join a high-impact team delivering cutting-edge ecommerce and cloud solutions at national scale. Please note: You must be UK-based and have the right to work in the UK to be considered for this role.