Why This Resume Works
350+ servers, 5,200 users, and 99.97% uptime immediately establishes credibility for senior-level infrastructure management positions.
The Microsoft 365 migration with zero data loss and $94K savings tells a complete project story: scope, execution quality, and business outcome in one bullet.
Showing 100% DR test success and 15-minute RPO demonstrates the operational rigor that separates senior administrators from those who just keep the lights on.
Section-by-Section Breakdown
Summary
Lead with server count, user base, and uptime. Mention your major certifications (MCSE, RHCE) and biggest cost savings to set the bar high.
Skills
Separate Systems, Automation, and Infrastructure categories. Include both vendor-specific tools (VMware, NetApp) and automation platforms (Ansible, SCCM) for comprehensive ATS matching.
Experience
Show a progression from routine administration to leading projects and migrations. Senior roles demand evidence of project leadership, not just daily operations.
Education
Certifications like MCSE and RHCE often matter more than degrees at this level. List them prominently and include the certification version if relevant.
Key Skills for Senior Systems Administrator Resumes
Based on analysis of thousands of job postings, these are the most frequently required skills:
Common Mistakes on Senior Systems Administrator Resumes
- ⚠Only Showing Maintenance Work - A senior sysadmin resume full of 'maintained servers' bullets looks like a mid-level resume. Show migrations, modernization projects, and automation initiatives.
- ⚠No Cost or Efficiency Impact - Server administration has real business costs. Failing to quantify savings from automation, consolidation, or cloud migration misses a key value proposition.
- ⚠Missing Backup and DR Metrics - Backup is a core sysadmin responsibility. Without RPO/RTO figures and DR test results, there is no evidence you can protect organizational data.
- ⚠Ignoring Compliance Context - If you work in healthcare, finance, or insurance, not mentioning HIPAA, SOX, or PCI compliance suggests you are unaware of the regulatory obligations driving your work.
- ⚠Outdated Technology Only - Listing only legacy technologies (Server 2008, Exchange 2010) without modern equivalents suggests you have not kept your skills current. Show both legacy migration and modern platform expertise.