Arbetsbeskrivning

As a Python Software Engineer with a strong interest in both API development and desktop application engineering (with PyQt6), you will work on tools at the heart of CERN's accelerator complex, used daily across operations, engineering, and physics. This role spans the Python APIs that interface to the CERN control system, and the PyQt6-based desktop applications built on top of them. On the API side, you will develop frameworks, libraries, and bindings integrating tightly with backend control system services, with a strong emphasis on developer experience, robustness, and long-term maintenance. On the UI side, you will work on applications for operating, monitoring, and configuring accelerator systems, ensuring reliable, responsive, and effective user experiences. You will collaborate with colleagues across the organisation, contributing to design reviews, documentation, training, and technical support, while staying abreast of relevant emerging technologies and playing an active part in shaping the future of CERN's accelerator control system. Your responsibilities Design and maintain Python bindings to the accelerator control system, using a range of technologies such as REST, gRPC, event-driven messaging (e.g. ZMQ), as well as bindings to existing C++ and Java libraries. Build reusable components, widgets, and libraries supporting control application development at CERN. Develop and maintain a number of PyQt-based control applications used in the CERN Control Centre. Contribute to the selection and configuration of a coherent DevOps toolchain for Python, covering dependency management, packaging, testing, CI/CD, and deployment monitoring. Collaborate with user communities to establish and document best practices for developing Python-based control applications. Contribute relevant developments back to the open source community. Take ownership of one or more key systems or tools, driving their evolution through active engagement with stakeholders and structured follow-through. Mentor junior engineers, sharing knowledge and supporting their growth as they contribute to the above areas. Your profile Extensive experience with Python, including typed Python and asynchronous programming patterns. Advanced knowledge of API and application design, with proven experience designing and evolving client-oriented APIs and SDKs. Solid grasp of platform engineering principles and modern software engineering practices, including quality assurance and DevOps. Knowledge of Qt and its Python bindings (PyQt or PySide) is a plus; willingness to learn is equally valued. Experience in UI design with a strong focus on usability and developer experience is desirable. Comfortable working across a broad and evolving technology landscape, with the curiosity and initiative to develop new expertise as the role demands. Master's Degree or equivalent relevant experience in the field of Computer Science or a related field. Your skills Knowledge of programming techniques and languages. Design of databases/repositories. Architecture and design of ICT systems. Identification and selection of relevant emerging ICT technologies. Conceptualising, designing and developing user experiences and interfaces. Delivers high quality work on time and fulfils expectations. Adopts a pragmatic approach; understands the value of adopting generic rather than gold -plated' technical solutions. Contributes to promoting a positive atmosphere in the team through an optimistic and constructive attitude; addresses issues. Works conscientiously and reliably; delivers on promises. Adapts quickly and resourcefully to shifting priorities and requirements. Spoken and written English, with a commitment to learn French. Grade range: 6 Benchmark job: 200020 - Computing Engineer Job flexibility: Hybrid