Senior IT Systems Administrator
Core
Senior operational responsibility for the performance, resilience, maintenance, and continual improvement of IT systems and services, ensuring they remain secure, reliable, and fit for purpose. (via careerplan.io/jobs/5001751101-senior-it-systems-administrator-at-twinstream)
Role type
Senior hands-on IC IT Systems Administrator
Builds
Corporate IT estate including cloud services, infrastructure, end-user devices, applications, and network components
Domain
Enterprise IT Operations, Cloud Infrastructure, Network Engineering, Security
Required skills
Microsoft 365 administration, Microsoft Entra ID (Identity and Access Management), corporate network management (firewalls, switching, wireless, VPN, DNS, DHCP), PowerShell scripting, endpoint management (Windows, Linux, mobile), backup and recovery planning, security incident response and monitoring, IT service management (incident, problem, change, asset management), technical documentation
Preferred skills
Intune, Landscape, JumpCloud, Atlassian products, Infrastructure as Code, AWS and Azure cloud infrastructure, ISO/IEC 27001 or Cyber Essentials Plus experience, agile delivery
Technologies
Microsoft 365, Microsoft Entra ID, PowerShell, AWS, Azure, SIEM tools, Intune, Landscape, JumpCloud, Atlassian products
Responsibilities
Lead day-to-day management of operational performance, resilience, and lifecycle of cloud services, corporate infrastructure, end-user devices, and applications; Implement and maintain operational standards for identity and access management, Joiner/Mover/Leaver processes, and asset management; Lead technical implementation of configuration changes, automation, and system integrations; Administer and optimize cloud platforms, SaaS applications, and collaboration tools; Provide senior administration and operational assurance of the corporate network; Monitor service health, capacity, performance, and security; Act as senior operational escalation point for complex incidents and problems; Plan and coordinate patching, vulnerability remediation, and upgrades; Implement and test backup, recovery, and continuity arrangements; Lead technical investigation and escalation of security events; Maintain quality of technical documentation and operational procedures; Mentor colleagues and promote consistent delivery; Identify and analyze operational improvements and produce recommendations for prioritisation
Seniority
Senior, hands-on IC