Senior Software Engineer

Senior Software Engineer (all) About cyon cyon is an independent web hosting provider with over 20 years of experience based in Basel. Around 50,000 customers trust cyon – because of personal support, easy management, and sustainable hosting. We combine technical competence with proximity and warmth. Our software has grown over many years – and we are currently actively shaping its future. For this path, we are looking for an experienced, technically savvy personality who will both safely continue to develop our existing systems and drive innovations forward. : someone who positions cyon even better for the future on the software side. Your tasks With us, you will take responsibility for the development and further development of sophisticated software solutions and new features – from conception through implementation to a successful go-live. In doing so, you ensure that functional and technical requirements are met and that our solutions convince in terms of performance, quality, and security. You accompany the entire software lifecycle and ensure sustainable stability with clean code, meaningful tests, and clear documentation. Our systems have grown over many years. You will also take care of maintenance and targeted refactoring of our existing solutions, ensuring they remain reliable and future-proof, and drive their gradual modernization forward with the team. With modern development and architecture approaches as well as the appropriate tools, you bring structure, transparency, and efficiency to our software projects. You use AI-supported tools productively in your daily development routine and help to integrate them meaningfully and responsibly into our way of working. You develop AI-based functions (ML and LLM features) for our products and processes – with a view to real benefit for our customers, reliability, and data protection. You handle exciting incidents and thus support our customers and internal support with technical problems. What you bring with you Completed education FH, Uni in computer science or comparable qualification Several years of sound experience in PHP development, ideally also with Laravel and PHP 8.x Confident handling of relational databases (MySQL, PostgreSQL) and complex SQL queries Practical experience in the design and implementation of RESTful APIs as well as integration of third-party APIs and external services Professional knowledge in JavaScript, HTML5 and CSS3 as well as understanding of modern frontend paradigms and the willingness to use them in the future Willingness and experience to co-develop existing legacy systems and modernize them gradually Experience and understanding of Infrastructure as Code and DevOps principles Practical experience with AI tools in daily development and with the integration of machine learning or LLM-based features into production environments An open mindset towards AI, paired with the necessary respect: You deal consciously and critically with AI, check its results, know its limits, and think about security and data protection from the start Versed in handling Git and established branching strategies Independence, willingness to learn, and strong analytical skills Initiative and the ability to independently drive even demanding software projects forward Very good German in speaking and writing as well as good English skills What you ideally also bring Experience with at least one other programming language besides PHP and openness to polyglot architectures Experience in development with Elixir and the ecosystem (Phoenix, LiveView) In-depth knowledge in the context of machine learning and LLM applications Experience with cloud-native architectures Practical experience with Docker and CI/CD pipelines Experience and joy in the migration of legacy applications to modern architectures Experience with agile development methods (Scrum, Kanban) What we offer you Varied tasks with a lot of personal responsibility and creative freedom An environment in which you can both maintain proven systems and drive innovations with new technologies and AI forward Modernly equipped office premises in a central location in Basel with very good connections to public transport Flexible annual working hours and at least five weeks of vacation Possibility for home office, workations, mobile working Generous budget for your personal workplace equipment Learning and further education budget (financial and temporal) Free drinks and fresh fruit in the office Get in touch Became curious? Then apply with your CV and your relevant certificates. We look forward to getting to know you. jpid1dff117jm jit0729jm jiy26jm