Join this established Cyber team on a large Defence site, working within the Security Services environment whilst also performing administration duties across Windows and Linux based Server Infrastructure, Security Appliances, Network Infrastructure, Virtual Environments and Storage. This is an opportunity to become involved in the world of Defence and Science where no 2 days are the same. Initially you will be based on site in Portsmouth OR Salisbury for the first 8 weeks whilst you learn this account. After that you will be on site 2 days per week. You do need to be eligible for DV Clearance please. What you'll be doing: Responding to ServiceNow incidents. Resolve e-mail and web browser issues. POI Investigations. Handling and maintaining an on prem Splunk solution. 3rd/4th line Network Issues. What youll bring: ? Experience in managing and maintaining Splunk solution. 3rd/4th line Network Security experience support. in an Enterprise environment working to challenging SLAs. Advanced Firewall and Proxy administration (to include install, configurations and fault finding). Recent experience of working within security environments. Understanding of Networks, Routers, DMZ and Switches. Extensive Core Linux administration skills. Core MS Windows administration skills. Experience of VMware vSphere virtualisation systems. Good understanding and ability to perform root cause analysis across a range of protocols and topologies (TCP/IP, HTTP & HTTPS, SMTP, FTP, DNS, DHCP, X500). Knowledge of ITIL (ITIL Foundation certificate or experience working in ITIL environments). Previous experience of project delivery & implementation of detailed designs. Knowledge of MoD, CESG and other mandated government IT legislation. Certified Information Systems Security Professional or other security certification If you are interested in this role but not sure if your skills and experience are exactly what were looking for, please do apply, wed love to hear from you! Employment Type: Permanent Location: Portsmouth OR Salisbury Security Clearance Level: Eligible for DV Clearance. Internal Recruiter: Jane Salary: To £55K Benefits: 25 days annual leave with the choice to buy additional days, health cash plan, life assurance, pension, and generous flexible benefits fund Loved reading about this job and want to know more about us? Sopra Sterias Aerospace, Defence and Security business designs, develops and deploys digital solutions to Central Government clients. The work we do makes a real difference to the clients goal of National Security, and we operate in a unique and privileged environment. We are given time for professional development activities, and we coach and mentor our colleagues, sharing knowledge and learning from each other. We foster a culture in which employees feel valued and supported and have pride in their work for the customer, delivering outstanding rates of customer satisfaction in the UKs most complex safety- and security-critical markets.