Senior Fullstack Developer

About Us freshcells systems engineering GmbH is a software service provider based in Düsseldorf with a dynamic team of over 60 creative experts from various fields. At our company, authenticity, individual talent development and open communication are our focus. We build on respect, trust and responsibility. As an innovation-driven company, we invest in new ideas. We know that the best results are achieved as a team. We do make mistakes, but we learn from them. We are open and bold in exploring new paths. Join us on our exciting journey in what is arguably the most significant and forward-looking field — software development. To find out more about us, feel free to visit our website https://www.freshcells.de/en/ Why us? freshcells systems engineering GmbH is a software service provider based in Düsseldorf with a dynamic team of over 60 creative experts from various fields. At our company, authenticity, individual talent development and open communication are our focus. We build on respect, trust and responsibility. As an innovation-driven company, we invest in new ideas. We know that the best results are achieved as a team. We do make mistakes, but we learn from them. We are open and bold in exploring new paths. Join us on our exciting journey in what is arguably the most significant and forward-looking field — software development. To find out more about us, feel free to visit our website https://www.freshcells.de/en/ Your mission Development of modern backend applications based on Node.JsDevelopment of modern frontend applications based on React JSDevelopment of APIs based on GraphQLDesign and implementation of new features for sophisticated software solutions in cooperation with project management, design, and development departmentsWriting and maintaining our automated test suitesParticipation in continuous improvement processes Your profile Very good knowledge of Node.JSStrong knowledge of ES 6 JavaScript as well as extensive knowledge of frameworks and libraries such as reactJS, vue.js and/or AngularSound experience with relational or non-relational databasesGood knowledge of data structure designCompetences in consuming and creating web services based on ReST and especially GraphQLKnow-how in performance optimizationBasic knowledge of HTML and CSS is helpfulExperience with agile development in a teamHands-on experience with automated software testingBasic knowledge in API securityFluent in English Nice to have Experience of PHP, ideally with frameworks such as Symfony, Laravel or YiiExperience with containerization technologies such as Docker etc.Experience with container orchestration tools like, i.a., Kubernetes, OpenShift, or Docker SwarmKnowledge of designing and adapting software to be twelve factor applicationsKnowledge of continuous integration via tools like JenkinsExperience with Next.jsExperience with TypeScript