At CERN, the European Organisation for Nuclear Research, physicists and engineers are probing the fundamental structure of the universe. Using the world's largest and most complex scientific instruments, they study the basic constituents of matter - fundamental particles that are made to collide together at close to the speed of light. The process gives physicists clues about how particles interact, and provides insights into the fundamental laws of nature. 

Introduction

Are you an experienced Software Engineer passionate about building user-centric, high-impact platforms? Join the Multimedia Platforms Team at CERN, where you will shape how thousands of researchers connect, collaborate, and share knowledge every day.

In this role, you will design, develop, and operate reliable platforms that support the entire workflow of recording, processing, and streaming multimedia content for the CERN community. You also run a large scale videoconferencing platform serving tens of thousands of users across CERN and the wider HEP community.

If you’re looking for a role where your work has tangible impact across a global scientific community, this is your opportunity.

Functions

• Design and develop open source web platforms following clear UI/UX principles.
• Develop and maintain backend services for transferring, processing and publishing multimedia files.
• Maintain CERN’s webcast infrastructure (Wowza based) and manage its cloud multimedia CDN.
• Share the ownership of core software projects powering recording and webcasting operations: Encoders Manager, Recordings Manager, RAVEM, Webcast website, TTaaS.
• Manage and provide 3rd level support for the Videoconferencing service.
• Contribute to other applications in the section’s catalogue, including Indico and newdle.
• Engage with users and vendors; contribute to feature evaluations and procurement processes. Provide expert support, documentation and training to the user community.
• Mentor junior team members, including Summer/Technical Students and Graduates.

Master's degree or equivalent relevant experience in the field of Computer Science or a related field.

Experience:

• Strong expertise in web and systems programming, especially in Python.
• Familiarity with DBMSs (e.g. PostgreSQL), task queues (e.g. Celery, Rundeck), search suites (e.g. OpenSearch) and web frameworks such as Flask, FastAPI or Django.
• Solid experience in web systems architecture, integration and migration.
• Proven hands-on experience deploying, configuring, and operating production-grade services, including container-based platforms (Docker, OpenShift) and virtualized environments (VMs).
• Understanding of user?driven design principles and web accessibility fundamentals.
• Experience with client?side UI libraries (React, Vue, Angular) is an advantage.
• Knowledge of multimedia and streaming technologies (e.g. HLS, RTMP, WebSockets) is a plus.
• Experience managing cloud/SaaS and/or procuring cloud services is a plus.

Technical competencies:

• Conceptualising, designing and developing user experiences and interfaces.
• Development of application software.
• Knowledge and application of software life-cycle tools and procedures.
• Knowledge of programming techniques and languages.
• Re-use, refactoring, integration and porting of existing software.

Behavioural competencies:

• Achieving Results.
• Communicating Effectively.
• Solving Problems.
• Working in Teams.
• Learning and Sharing Knowledge.

Language skills:

Spoken and written English, with a commitment to learn French.

Eligibility and closing date:

Diversity has been an integral part of CERN's mission since its foundation and is an established value of the Organisation. Employing a diverse workforce is central to our success. We welcome applications from all Member States and Associate Member States.

This vacancy will be filled as soon as possible, and applications should normally reach us no later than 29.04.2026 at 23:59 CEST.

Employment Conditions

Contract type: Limited duration contract (5 years). Subject to certain conditions, holders of limited-duration contracts may apply for an indefinite position.

Working Hours: 40 hours per week

Job Flexibility: Hybrid

This position involves:

• Work during nights, Sundays and official holidays, when required by the needs of the Organisation.

Job grade: 6-7

Job reference: IT-CA-CTE-2026-73-LD

Field of work: Software Engineering and IT

Benchmark Job Title: Computing Engineer

Global Benefits

• A competitive salary (tax free), increasing in line with your years of relevant experience.
• 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, removal, travel expenses) depending on your individual circumstances.
• Possibility to extend your contract up to 8 years + eligibility for indefinite contract tenure.

Overview of CERN - Discover a world where the impossible is made possible!

At CERN, the European Organization for Nuclear Research, we are pushing the frontiers of science and technology. Our groundbreaking work brings together not only physicists but also a diverse range of professionals from engineering, technical, scientific, and administrative fields. Together, we foster an environment where innovation and collaboration thrive.

Every day, we face exciting new challenges and opportunities to contribute to cutting-edge research that shapes our understanding of the universe. We meet these challenges through the diverse perspectives within our teams, ensuring every contribution is valued and driving our shared sense of inclusion and purpose. Diversity is a core value of CERN since its foundation, and it remains central to our mission and continued success.

If you are ready to be part of a dynamic, inclusive community pushing the boundaries of knowledge, CERN is the place where your curiosity and skills can thrive. Be part of our mission to uncover what lies at the heart of the universe! TAKE PART!

More information about us, here: careers.cern