Do you want to work in a diverse and international company where we build future ICT solutions together? We are now looking for a Senior System Specialist to lead the development and administration of the upcoming LUMI-AI supercomputer . The team you will be working with are already responsible for the administration of the current EuroHPC pre-exascale LUMI system, which has about 5000 HPC servers and over 90PB of storage. Building new competences and selecting the right tools and technologies will be an important part of your work. A strong background in Linux security and experience of system patching (kernel and other components) is a must. Technical leadership experience is a big plus. We offer a unique opportunity to work on the cutting edge of technology with some of the largest computing systems in the world – providing you with meaningful challenges and an opportunity to advance your career. Join us in supporting research and science! This position can be located in either Espoo or Kajaani. Your key responsibilities will be: Coordinating with our supplier (Bull) about the LUMI-AI admin stack and some other architectural details Ensuring the high availability, confidentiality and integrity of our supercomputing systems Participating in system and service development, in collaboration with other groups at CSC Participating in the overall computing system life cycle, from planning to decommissioning Supporting end users during incidents and with some problems relevant to the team To be successful in this role, you need: Advanced Linux systems administration skills A strong focus on information security Experience with adapting kernel patches Experience with large-scale systems Technical leadership ability A willingness to mentor and guide others Fluency in English, both written and spoken We appreciate either experience or a willingness to learn about these: Maintenance and development of complex system software stacks High-speed, low-latency networking Parallel storage systems Kubernetes orchestration and running containerised workloads GPU computing An understanding of modern datacentre hardware Linux kernel development experience What we offer At CSC, our employees enjoy a wide range of benefits designed to support both their professional and personal lives. We offer flexible working hours and the option for remote work, making it easier to balance work and daily life. Our comfortable workspaces in Keilaniemi, Espoo, and Renforsin Ranta, Kajaani, are designed to facilitate both teamwork and tasks that require quiet concentration. We provide comprehensive occupational healthcare services, comprehensive health insurance, and remote work insurance. Employees can take advantage of a lunch benefit during the workday, and we support recreational activities with sports and cultural benefits. Please send your application by October 18, 2026. The recruitment process will include interviews and a work personality assessment. Interviews may begin already during the application period, so we encourage you to apply as soon as possible. The selected candidate will be subject to drug screening and basic security clearance. The requirement for the employment relationship is that the security clearance does not reveal any noteworthy factors. Diversity is part of who we are, and we continuously work to ensure the diversity and equality of our workplace. We encourage all skilled applicants regardless of background to apply for the position. We only process applications submitted through our official recruitment system. Applications sent by email will not be considered for data protection reasons. If you have any questions regarding the position, please get in touch with Development Manager Balázs Szakmáry, balazs.szakmary(at) csc.fi . Who are we? We work together for the future of research and learning through advanced technology. Our competence is the platform on which our society researches, learns and remembers. With us, you get to do meaningful work for the digitalisation of Finnish society and take part in significant international cooperation projects. CSC is a non-profit special assignment company owned by the Finnish government and Finnish higher education institutions. We build digital solutions for data management, scientific computing, and education that enable researchers, learners, and companies to understand the world. Our company’s key resource is our curious personnel with a willingness to learn, and their well-being at work is very important to us. As a community, we work to ensure that well-being, diversity and inclusiveness are embedded in our culture and practices. CSC – Jobs for Brilliant Minds