Intro Why us? freshcells systems engineering GmbH is a software service provider based in Düsseldorf with a dynamic team of over 40 creative experts from various fields. We focus on authenticity, individual talent development and open communication. 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 make mistakes, but we learn from them. We are open and courageous for new ways. Join us on our exciting journey in what is probably the most important and forward-looking area - software development - as a Fullstack Developer (m/f/d) full-time Our offer to you: Flex time for early risers and night owls Flexible home office days Company pension scheme with employer contribution Subsidy for the "Deutschlandticket" Advantage portal with offers in online stores and branches of various brands High-end equipment for private use too A secure and long-term workplace Regular feedback, team meetings & retrospectives Room for your own ideas and personal development Digital training courses, freely available to every employee Support with relocating processes, as well as free German courses for newcomers Joint activities such as summer and winter parties, monthly company breakfast, etc. A dog-friendly working environment Tasks Development of modern frontend applications based on ReactJS, Next.js and TypeScript Development of APIs based on GraphQL Development of modern backend applications based on Node.js and PHP Symfony Design and implementation of new features for sophisticated software solutions in cooperation with project management, design, and development departments Writing and maintaining our automated test suites Participation in continuous improvement processes Requirements Very good knowledge of modern JavaScript (ES6 and above) and/or TypeScript Very good knowledge with Next.js Extensive knowledge of frontend frameworks and libraries such as ReactJS Good knowledge of modern PHP (v8 and above) Good knowledge of PHP frameworks and libraries such as Symfony and/or Laravel Sound experience with relational databases Good understanding of established and evolving Web APIs Competences in consuming and creating web services based on REST and especially GraphQL Know-how in performance optimization Basic knowledge of HTML and CSS is helpful Experience with agile development in a team Hands-on experience with automated software testing Basic knowledge in API security Fluent in English Closing All people are welcome here, regardless of gender, age, sexual identity, origin, religion, ideology, with or without a disability. The main thing is that you fit in with us. If you are interested in a wide-ranging portfolio of projects, want to continuously develop yourself and enjoy working independently and responsibly, get in touch with us: recruiting((at))freshcells(.)de. We look forward to hearing from you