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 closeness 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 will set cyon up even better for the future on the software side.
Your tasks
With us, you will take responsibility for the development and further development of demanding software solutions and new features – from conception to implementation to a successful go-live.
In doing so, you will 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 the maintenance and targeted refactoring of our existing solutions, ensuring that 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 will bring structure, transparency and efficiency to our software projects.
You use AI-supported tools productively in your daily development work 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 process exciting incidents and thus support our customers and internal support with technical problems.
What you bring
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 with AI consciously and critically, check its results, know its limits and think about security and data protection from the very beginning
Proficient in using Git and established branching strategies
Independence, willingness to learn and strong analytical skills
Proactivity and the ability to drive even demanding software projects forward independently
Very good German in speaking and writing as well as good English skills
What you ideally bring additionally
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 enjoyment 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 time-related)
Free drinks and fresh fruit in the office
Get in touch
Become curious? Then apply with your CV and your relevant certificates. We look forward to getting to know you. jpid1dff117jm jit0729jm jiy26jm