Distributed Storage Engineer

Job Posting Organization:
CERN, the European Organization for Nuclear Research, is a leading scientific research institution established to probe the fundamental structure of the universe. It is renowned for its groundbreaking work in particle physics, utilizing the world's largest and most complex scientific instruments. CERN was founded in 1954 and has since grown to employ thousands of scientists, engineers, and support staff from around the globe. The organization operates in multiple countries and is known for its collaborative international research efforts, particularly through projects like the Large Hadron Collider (LHC).

Job Overview:
As a Distributed Storage Engineer at CERN, you will play a crucial role in evolving the data storage systems utilized at the Large Hadron Collider and its international partners. This position is part of the Storage and Data Management Group within CERN's IT Department, where you will be tasked with managing and optimizing large-scale, distributed storage services. Your work will directly contribute to the scientific progress at CERN by ensuring that data collection, archival, reconstruction, analysis, and global distribution are efficient and reliable. You will engage with cutting-edge technologies and methodologies, including open-source Ceph-based solutions, and will be involved in system-wide troubleshooting within a distributed Linux environment. This role offers a unique opportunity to enhance your skills in automation, deployment, and observability, while also collaborating with international partners and participating in conferences and workshops.

Duties and Responsibilities:
The responsibilities of the Distributed Storage Engineer include managing and operating distributed disk storage systems, including block, object, and filesystem services based on open-source technologies like Ceph. You will participate in the architectural evolution and design of storage services, integrating and troubleshooting distributed storage systems across multiple data centers. Additionally, you will contribute to the documentation, development, optimization, and automation of storage services, and engage in change management, incident response, and user support. Liaising with key stakeholders both within and outside the IT department will also be a critical part of your role.

Required Qualifications:
Candidates must possess a Master's degree or equivalent relevant experience in Computer Science or a related field. A strong interest in service management, including operations, troubleshooting, user support, and automation is essential. A deep understanding of Linux operating system performance and administration, as well as the architecture of distributed storage and filesystems, is required. Experience in debugging and diagnosing issues in complex distributed environments is crucial, along with demonstrated experience in C++ software development, preferably with Ceph. Strong collaboration and communication skills are necessary to work effectively with cross-functional teams and partners.

Educational Background:
A Master's degree in Computer Science or a related field is required for this position. Equivalent relevant experience may also be considered. Candidates should have a solid foundation in computer science principles and practices, particularly as they relate to distributed systems and storage technologies.

Experience:
The position requires candidates to have a strong interest and experience in service management, including operations, troubleshooting, and user support. A deep understanding of Linux systems and distributed storage architectures is essential, along with experience in C++ software development. Candidates should have a proven track record of working in complex distributed environments and should be comfortable with debugging and diagnosing issues across hardware, network, and software layers.

Languages:
Fluency in spoken and written English is mandatory, with a commitment to learn French being a valuable asset. Proficiency in additional languages may be beneficial but is not required.

Additional Notes:
This position is a limited duration contract for 5 years, with the possibility of extension up to 8 years and eligibility for an indefinite contract tenure. The job requires a commitment of 40 hours per week, with hybrid working flexibility. Candidates should be prepared to work during nights, Sundays, and official holidays as required by the organization's needs. The job grade is classified as 6-7, and the reference for this position is IT-SD-GSS-2026-96-LD. CERN offers a competitive salary that is tax-free, along with comprehensive health insurance, paid leave, and a relocation package depending on individual circumstances.