A complete, annotated resume for a senior systems administrator. Every section is broken down — so you can see exactly what makes this resume land interviews at infrastructure-driven companies.
Scroll down to see the full resume, then read why each section works.
Systems administrator with 7 years of experience managing and automating enterprise infrastructure across Linux and Windows Server environments. At Datadog, maintained 99.98% uptime across a 500+ server fleet and automated server provisioning with Ansible, reducing deployment time from 4 hours to 12 minutes. Deep expertise in Active Directory, VMware, and cloud infrastructure on AWS, with a track record of improving patch compliance, reducing incident response times, and scaling infrastructure to support rapid company growth.
Operating Systems: Linux (RHEL, Ubuntu, CentOS), Windows Server 2016/2019/2022 Infrastructure: Active Directory, VMware vSphere, AWS (EC2, VPC, IAM), Docker, DNS, DHCP, LDAP Automation: Ansible, Terraform, Bash, PowerShell Monitoring: Nagios, Grafana, PagerDuty
Seven things this systems administrator resume does that most don’t.
Most sysadmin summaries say something like “experienced in managing servers and infrastructure.” Olga’s summary leads with 99.98% uptime across 500+ servers and a provisioning improvement from 4 hours to 12 minutes. Those numbers immediately tell a hiring manager that she delivers measurable reliability at scale. When an infrastructure leader reads a specific uptime figure backed by automation that eliminated manual provisioning, they know this person has actually operationalized infrastructure management — not just kept the lights on.
Notice the pattern: 4 hours reduced to 12 minutes, manual configuration errors eliminated. Most sysadmin resumes say “used Ansible for configuration management.” Olga’s bullet specifies the before-and-after deployment time and the operational risk that was eliminated. An IT director doesn’t need to guess whether her automation was effective — the numbers prove it. The inclusion of both time savings and error elimination adds credibility because it shows she understood the full problem, not just the tooling.
Improving patch compliance from 72% to 98% is a specific, verifiable improvement. But what makes this bullet exceptional is the context: Olga didn’t just apply patches manually — she built an automated pipeline that reduced the deployment window from 14 days to 48 hours. That’s the difference between a sysadmin who runs updates and one who builds systems that keep infrastructure secure at scale. The compliance percentage provides the outcome, and the pipeline detail shows process thinking.
The migration bullet doesn’t just say “migrated servers to AWS.” It specifies 40 workloads, completion 3 weeks ahead of schedule, zero service interruptions, and a 28% cost reduction. This tells a hiring manager that Olga can plan and execute large infrastructure projects end-to-end — managing timelines, minimizing risk, and delivering measurable cost savings. That’s a senior systems administrator signal that most resumes miss entirely.
Designing a disaster recovery plan with automated failover across 2 geographic regions isn’t routine maintenance — it’s infrastructure architecture. Olga’s bullet shows an RTO of 15 minutes, an RPO of 5 minutes, and quarterly DR drills with zero failed tests. That’s not just creating backups; it’s building resilient systems that the business depends on. This kind of bullet signals senior-level thinking, which is exactly what companies look for in experienced sysadmin hires.
Instead of a flat list (“Linux, Windows, Ansible, Bash, AWS, VMware...”), Olga groups her skills into Operating Systems, Infrastructure, Automation, and Monitoring. This categorization tells a hiring manager at a glance that she understands the infrastructure stack holistically. Including specific AWS services like “EC2, VPC, IAM” alongside Active Directory and VMware shows she can operate across both cloud and on-premises environments.
Junior systems administrator at Rackspace resolving tickets and automating maintenance tasks. Systems administrator at Cloudflare building monitoring stacks and executing cloud migrations. Senior systems administrator at Datadog managing 500+ servers and designing disaster recovery architecture. Each role is a visible step up in scope, strategic impact, and infrastructure responsibility. The progression tells a clear story: this person went from resolving tickets to designing the systems that prevent them.
The biggest mistake on sysadmin resumes is leading with the environment size instead of the outcome. “Managed 500 servers” is a scope description. “Maintained 99.98% uptime across a 500+ server fleet and reduced unplanned downtime by 62%” is a result. Olga’s resume consistently puts the reliability outcome first and the implementation details second. That ordering matters — infrastructure leaders scan for uptime records and incident reduction before they check your fleet size.
Notice how the cloud migration bullet ends with “reducing monthly infrastructure costs by 28%.” Most sysadmins wouldn’t think to quantify the financial impact. But it transforms a technical migration project into a cost optimization story. If your infrastructure work unblocked a product launch, prevented downtime that would have cost revenue, or reduced operational overhead by thousands per month, find the number and include it.
Olga doesn’t say she “assisted with” or “supported” server management. She “managed,” “automated,” “designed and implemented,” and “built.” These verbs signal ownership — that she was the accountable administrator, not a participant. At the senior level, this distinction matters enormously. Hiring managers want to know who drove the infrastructure decisions, not who was on the bridge call during an outage.
Emphasize the Ansible and Terraform automation work, the CI/CD integration, and any infrastructure-as-code patterns you’ve implemented. DevOps roles care more about your ability to automate everything and integrate with development workflows than your Active Directory or hardware experience. If you’ve built deployment pipelines, containerized services with Docker, or implemented GitOps workflows, move those bullets to the top of each role and downplay the traditional sysadmin tasks like DNS management and ticket resolution.
Lead with the AWS migration, the cloud infrastructure management, and the Terraform-based provisioning. Downplay the on-premises VMware and Active Directory work and emphasize anything related to cloud architecture, IAM policy design, and cost optimization. Cloud engineer roles want to see that you understand how to design, deploy, and operate scalable cloud infrastructure — not just how to manage physical servers.
IT management roles care less about your scripting expertise and more about leadership, process improvement, and cross-team coordination. Emphasize the breadth of Olga’s work — disaster recovery planning, vendor coordination, monitoring consolidation, and onboarding optimization — to show she can manage teams and projects, not just systems. Highlight the user-facing improvements like streamlining onboarding from 2 days to 3 hours, and add any experience mentoring junior staff or managing vendor relationships.
The weak version describes activities that every systems administrator does. The strong version names the fleet size, the uptime achieved, the downtime reduction, and the monitoring approach. Same type of work, completely different level of credibility.
The weak version is a collection of buzzwords that could describe any sysadmin. The strong version names a company, a specific environment scale, an uptime figure, and a measurable automation improvement — all in two sentences.
The weak version lists every technology the person has ever touched, including three cloud providers and project management tools. The strong version is categorized, focused on depth over breadth, and drops anything that would be embarrassing to discuss in a systems architecture interview.
Include the ones you actually have. Leave out the ones you’d struggle to discuss in an interview.
This exact resume template helped our founder land a remote data scientist role — beating 2,000+ other applicants, with zero connections and zero referrals. Just a great resume, tailored to the job.
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