A1's ICT services are one of the fastest growing business areas of our company. With decades of expertise in the design and operation of IT services for our own needs, we have been targeting TOP corporate customers for several years and offer a comprehensive range of services - from desktop services (desktop support/rollout) to cloud solutions and datacenter services. Job Summary: Within the "Enterprise Hybrid Platforms" group, the "Enterprise Data Systems" team is responsible for designing and operating ICT infrastructure solutions for internal customers. The technological focus is on the Windows operating system. Now we are looking for an experienced Senior Windows System Administrator who has the skills and dedication to develop IT systems and infrastructure that are in a service of A1 Group.