Full-stack Java-centric Engineer with Front-End Engineer capabilities required to help shape and evolve the UI for an early-stage SaaS clean tech start-up as one of the founding engineers. You’ll join a collaborative, cross-functional team building a cutting-edge platform for battery and renewable energy asset performance management. Remote-first with hybrid options in Cambridge. This is an opportunity to lead the front-end strategy while contributing to the full stack, with your experience in Java/Microservices / Spring Boot on the back end. The role is with an early stage start, so that responsibilities will be broad and you will need to be happy to work on front-end and full-stack features. Key skills required for the Full Stack Engineer - Java would include the majority of ✅ JavaScript, TypeScript, React, MUI / Material UI ✅ Complex backend systems experience – Java / Spring Boot / Microservices ✅ TDD, CI/CD, trunk-based dev ✅ Modern JS testing frameworks such as (Jest, Playwright) ✅ Pair programming & micro front-end design ✅ Isolated component deployment ✅ Cloud-native engineering (AWS or Azure) Nice to have skills required for the Full Stack Engineer - Java would include some of Domain-Driven Design / Behaviour-Driven Development Kafka, Docker, event-driven systems / distributed systems DevOps / Containerised deployments & config management, CI/CD, Kubernetes, ECS, Knowledge of Data Engineering, such as data pipelines Knowledge of machine learing You'll be the go-to UI specialist, enhancing testability and enabling continuous delivery of features across multiple regions. Great engineering culture, lots of ownership, and a chance to make a real-world climate impact. Get in touch to learn more or apply.