Senior IT Systems Engineer
Metricell Limited
- Horsham, England, United Kingdom
- Horsham, England, United Kingdom
Über
We are looking for a hands-on Senior IT Systems Engineer to take ownership of our core
infrastructure across on-premise and cloud environments. This is a broad infrastructure role covering server and virtualisation management, patching and lifecycle maintenance, network support, backup and recovery, and contribution to ISO 27001 controls and audits. You will work closely with IT support, security, and the wider business to ensure our systems remain secure, resilient, and well-documented. This role includes participation in a planned monthly patching window (including up to one weekend day per month).
*Key Responsibilities:*
*Infrastructure Ownership*
* Manage and maintain Windows Server environments (physical and virtual).
* Administer virtualisation platforms using Proxmox and VMware.
* Maintain core infrastructure services including Active Directory, DNS, DHCP, file services, and authentication.
* Support physical infrastructure including servers, storage, and networking hardware.
* Oversee system lifecycle management, including upgrades and decommissioning.
*Patching & Maintenance*
* Plan and execute regular patching of servers and infrastructure systems.
* Participate in a scheduled monthly maintenance window, including up to one weekend day per month.
* Ensure systems remain secure, compliant, and up to date.
* Proactively identify and remediate vulnerabilities.
*Cloud & Identity*
* Administer Microsoft 365, Azure AD (Entra ID), and Intune.
* Manage identity, access controls, and conditional access policies.
*Networking*
* Support LAN/WAN, firewalls, VPNs, and switching infrastructure.
* Troubleshoot connectivity and performance issues.
* Liaise with third-party providers where required.
*Backup, Disaster Recovery & Resilience*
* Maintain and regularly test backup and recovery solutions.
* Support disaster recovery planning and testing.
* Ensure business continuity requirements are met.
*Security & Compliance*
* Support ISO 27001 controls, evidence gathering, and audit preparation.
* Maintain technical documentation and system records.
* Assist with risk assessments and remediation activities.
* Apply security best practices including least privilege and multi-factor authentication.
*Projects & 3rd Line Support*
* Deliver infrastructure upgrades, migrations, and system rollouts.
* Provide 3rd-line escalation support for complex technical issues.
* Automate routine tasks using PowerShell or similar scripting tools.
* Administer virtualisation platforms using Proxmox and VMware.
* Maintain core infrastructure services including Active Directory, DNS, DHCP, file services, and authentication.
* Support physical infrastructure including servers, storage, and networking hardware.
* Oversee system lifecycle management, including upgrades and decommissioning.
*Essential:*
* Significant experience in a systems or infrastructure engineering role.
* Strong administration experience with Windows Server and Microsoft SQL Server.
* Experience managing virtualised environments
* Microsoft 365, Azure AD (Entra ID), and Intune administration.
* Solid understanding of networking fundamentals (TCP/IP, DNS, DHCP, VPNs).
* Experience with backup and disaster recovery solutions.
* Practical experience implementing security controls and patching processes.
* Strong troubleshooting skills across infrastructure and networking.
* Experience contributing to compliance frameworks such as ISO 27001 or Cyber Essentials.
* Takes ownership of work and delivers high-quality results consistently.
* Shares knowledge with colleagues to achieve shared goals
* Uses data-driven thinking to inform decisions and balance experimentation with measureable outcomes
* Maintains professional standards, contributing positively to team culture and organisational reputation
*Desirable:*
* Experience with Fortigate firewall products.
* Experience working in regulated or security-conscious environments.
* Linux and Ansible knowledge.
* Exposure to vulnerability management tooling.
* Scripting and automation experience (PowerShell preferred).
* Ability to obtain UK security clearance.
*Benefits:*
* Additional day off for your Birthday
* 2 days volunteering leave
* 25 days annual leave (plus public holidays)
* Full office closure between Christmas and New Year
* Refer a Friend Scheme
*Following your successful probationary period:*
* Private Health Care (including hearing, sight and dental)
* Bike2Work Salary Sacrifice Scheme
* Interest-Free Season Ticket Loan
*We also have:*
* Gym, showers and games room
* Prayer / Quiet room
* Regular social events
* Charity and fundraising events
* Free onsite parking at our Horsham office
*Ready to start your career with us?*
If you’re excited by the opportunity to join a collaborative, forward-thinking team and play a key role in delivering impactful solutions to global clients, we’d love to hear from you.
Job Types: Full-time, Permanent
Pay: £40,000.00-£50,000.00 per year
Benefits:
* Additional leave
* Bereavement leave
* Casual dress
* Cycle to work scheme
* Free parking
* On-site gym
* On-site parking
* Paid volunteer time
* Private dental insurance
* Private medical insurance
* Referral programme
* Sick pay
Application question(s):
* This role is based onsite in our Horsham (UK) Office with occassional travel to RedCentric in Crawley. Can you reliably commute or relocate (with existing right to work permissions)? Please specify
* Are you likely to pass security clearance? (Likely to pass if lived and worked in the UK for at least 5 years excluding studies)
Work authorisation:
* United Kingdom (required)
Work Location: In person
Sprachkenntnisse
- English
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