Salary: £30,000 - 60,000 per year Requirements: Relevant degree or equivalent commercial experience 5 years experience in full stack development Strong backend experience with Java Experience building modern front-end applications (e.g. React, Angular or similar frameworks) Strong understanding of scalable, cloud-based architectures Experience working within agile, DevSecOps environments Ability to write clean, maintainable, production-grade code Desirable: Experience with multi-threaded applications and Spring framework Desirable: Knowledge of IoT platforms or real-time data processing systems Desirable: Familiarity with cloud-native development (AWS, Azure or similar) Desirable: Experience with CI/CD and containerisation tools (Jenkins, Argo, Kubernetes) Desirable: Understanding of enterprise security and compliance standards Desirable: Proficiency with Atlassian tooling (JIRA, Confluence) Responsibilities: Design, develop, test, deploy and enhance full stack enterprise applications Build scalable backend services (primarily Java-based) powering IoT data platforms Develop modern, responsive front-end interfaces for real-time monitoring and analytics Contribute to the architecture of a global multi-cloud / multi-region platform Influence engineering best practices and SDLC improvements Collaborate with cross-functional teams including Product, Data and DevOps Support CI/CD pipelines and modern automated testing approaches Mentor junior engineers and provide technical guidance Deliver non-functional enterprise requirements (performance, security, scalability, resilience) Technologies: AWS Angular Atlassian Azure Backend CI/CD Cloud Confluence DevSecOps DevOps IoT Support JIRA Java Jenkins Kubernetes React Security Spring JavaScript Fullstack More: We are a fast-growing GreenTech scale-up operating within a stable, financially secure group, focused on sustainability and delivering impactful technology. Our patented, cloud-based Centralised Data Platform connects IoT devices across large retail estates, enabling brands to reduce energy consumption and cut carbon emissions. We offer a competitive salary of up to £95,000 plus a 15% bonus, along with fully flexible remote working across Northern Ireland, hybrid options, a 5% pension contribution, life assurance, gym flex membership, increasing annual leave with tenure, and private medical at senior levels. Join us during this pivotal growth phase to shape technical direction and contribute to meaningful environmental change. last updated 11 week of 2026