We are looking for an experienced and self-sufficient Senior Linux Systems Administrator to join our client's team in Hull. This is a hands-on senior role suited to someone who thrives in autonomous working environments, enjoys solving complex technical challenges, and is confident managing critical Linux infrastructure with minimal supervision. You will be responsible for the day-to-day administration, support, maintenance, and ongoing development of the company’s IT infrastructure and systems. The position combines traditional Linux systems administration with broader infrastructure, cloud, networking, security, and user support responsibilities. The role is primarily based in Hull, with occasional travel to other UK sites as required. Key Responsibilities Infrastructure & Systems Administration * Administration and support of Linux server environments * Management of virtualised and cloud-based infrastructure * Maintaining servers, networking, VPNs, firewalls, Wi-Fi, and related infrastructure * Managing cloud platforms and SaaS systems including Microsoft 365 and Azure * Monitoring system performance, availability, backups, and disaster recovery * Managing patching, endpoint security, antivirus, and access controls User & Operational Support * Providing first- and second-line support for hardware, software, and networking issues * Managing onboarding and offboarding processes for s...