A systems administrator maintains and manages a company's IT infrastructure — servers, networking equipment, virtualisation platforms, and cloud environments. They report to an IT Director or Infrastructure Manager. A typical week involves patching servers, monitoring system health dashboards, managing user access, configuring VPNs, and responding to infrastructure incidents. Financial services, healthcare, manufacturing, and large enterprise businesses across every sector rely on sysadmins to keep their operations online.
Alex Nguyen
Systems Administrator
📍 London, UK✉️ alex.nguyen@email.com
Summary
Experienced Systems Administrator with 6 years managing enterprise server infrastructure across cloud and on-premises environments. Expert in automation, monitoring, and maintaining 99.99% uptime SLAs.
Work Experience
Senior Systems Administrator at RackspaceApr 2021 — Present
Administer 200+ Linux and Windows servers across on-premises and AWS cloud infrastructure
Automated server provisioning using Ansible reducing deployment time from 4 hours to 15 minutes
Systems Administrator at CloudflareSep 2018 — Mar 2021
Managed VMware virtualisation platform hosting 150+ virtual machines across 3 data centres
Designed and maintained backup and disaster recovery systems with 99.9% recovery success rate
Systems Administrator CVs must demonstrate deep technical expertise and operational reliability. Recruiters want to see your infrastructure scale, uptime SLAs maintained, and automation achievements.
Key Skills to Include
Linux and Windows Server administration, VMware, AWS or Azure, Ansible, Docker, monitoring tools (Nagios, Grafana), Bash and Python scripting, and backup and disaster recovery.
Common Mistakes
Listing server counts without impact. "Managed 200 servers" is a start but "Maintained 99.99% uptime across 200 servers serving 50+ enterprise clients" shows business impact.
Formatting Tips
One to two pages. Use a clean template with a strong Technical Skills section grouped by category (OS, Cloud, Automation, Monitoring).
Average Salary — Systems Administrator
United States
$65,000 – $105,000
United Kingdom
$45,000 – $75,000
Germany
$48,000 – $78,000
UAE / Dubai
$50,000 – $82,000
Canada
$60,000 – $95,000
Australia
$70,000 – $100,000
Figures in USD. Ranges reflect mid-level experience (3–7 years). Senior roles and major metro areas typically sit at the top of these bands.
Top 5 Interview Questions — Systems Administrator
1Describe a major outage you dealt with. Walk me through your incident response.
Use a clear timeline: detection, initial diagnosis, communication to stakeholders, resolution steps, and post-mortem. Don't skip the communication piece — how you keep the business informed is as important as the fix.
2What's your experience with virtualisation platforms like VMware vSphere or Hyper-V?
Go beyond naming the platform. Talk about VM provisioning, vMotion, snapshot management, DR configurations, or resource pool management. Specific technical detail separates strong candidates.
3How do you approach patch management across a large server estate?
Cover your assessment process, test environments, change management approval, rollback plans, and post-patch verification. Show you understand the business risk of both patching and not patching.
4Describe your experience with cloud platforms — AWS, Azure, or GCP.
Be honest about your depth. If you've managed hybrid environments, describe the specific services — Azure AD Connect, AWS EC2, S3, RDS. Certification abbreviations alone don't impress interviewers.
5How do you secure a Windows Server environment against common threats?
Talk about hardening configurations, principle of least privilege, audit logging, vulnerability scanning, MFA enforcement, and how you stay current with CVEs. Security is now core to this role, not an optional extra.
How to Tailor Your CV
Capgemini, IBM, BAE Systems, NHS, and financial institutions like Lloyds Banking Group all employ large systems administration teams. IBM and Capgemini managed services want broad platform coverage — Windows, Linux, and cloud — plus ITIL certification. BAE Systems and defence contractors often require SC or DV security clearance. NHS infrastructure teams deal with highly regulated clinical environments so IG toolkit awareness is valued. For financial services roles, change management discipline and DR/BCP experience are consistently prioritised.