Backend Software Developer (Java/Python) (BE-CSS-DSP-2026-151-GRAE)
Backend Software Developer (Java/Python) (BE-CSS-DSP- -GRAE)
Full-time.
You will contribute to the design, development, testing and maintenance of the Data Processing Platform (DPP), used for both offline and online analysis of accelerator and beam data. Working within the Data Processing team of the CERN Controls Software & Services group and following the Scrum methodology, you will help build reliable and scalable backend services supporting the control, monitoring and analysis of particle accelerators and equipment.
You will participate in the validation and evolution of the platform architecture, develop production-ready integrations, and contribute to the modernisation of existing services through the migration of legacy systems to the DPP.
Responsibilities
- Contribute to the design, development, testing, and maintenance of software components for the Data Processing Platform (DPP).
- Collaborate with senior developers and stakeholders to gather requirements and implement reliable software solutions for accelerator controls and data processing.
- Participate in the evolution of the platform by contributing to new features, integrations, and improvements to existing services.
- Contribute to software quality activities, including testing, code reviews, debugging, and documentation.
- Learn and apply modern software engineering practices, tools, and technologies used within the CERN Controls Software & Services group.
- Experience in software development using Java and Python.
- Interest in software quality practices, testing methodologies, and maintainable software design.
- Interest in cloud-native technologies and modern software platforms; familiarity with Kubernetes, Knative, or similar technologies would be considered an asset.
Skills and Experience
- Good knowledge of object-oriented programming principles and software engineering fundamentals.
- Understanding of concurrent programming and distributed systems concepts.
- Knowledge of the Spring Framework ecosystem (Spring Boot).
- Familiarity with version control systems, CI/CD concepts, and automated development workflows.
- Exposure to monitoring and logging tools such as Prometheus, Grafana, or the ELK Stack would be considered an advantage.
- Spoken and written English, with a commitment to learn French.
- By the application deadline , you have a maximum of two years of professional experience since graduation in Software Engineer, Computer Science (or a related field) and your highest educational qualification is either a Bachelor's or Master's degree.
- You have never had a CERN fellow or graduate contract before.
- Applicants without University degree are not eligible.
- Applicants with a PhD are not eligible.
Contract and Compensation
- Contract duration: 24 months, with a possible extension up to 36 months maximum.
- Working hours: 40 hours per week.
- Job flexibility: Hybrid.
- Job reference: BE-CSS-DSP- -GRAE.
- Field of work: Software Engineering and IT.
- Benchmark job: - Computing Engineer.
- A monthly stipend between Swiss Francs per month (tax free) depending on your degree.
- 30 days of paid leave per year plus 2 weeks annual closure.
- Coverage by CERN’s comprehensive health insurance scheme (for yourself, your spouse and children), and membership of the CERN Pension Fund.
- Family, child and infant monthly allowances depending on your individual circumstances.
- A relocation package (installation grant and travel expenses) depending on your individual circumstances.
- Possibility to extend your contract up to 36 months.
- On-the-job and formal training including language classes.
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