Systems Administrator Resume Example
Terminal-style layout: shell-prompt section headings, uptime readout and a Linux/automation stack column.
Use this example Template: Systems Administrator
Tomasz Wiśniewski
Linux Systems Administrator
tomasz.wisniewski@example.com+48 601 234 567Warsaw, Polandlinkedin.com/in/tomaszwisniewski
Summary
Linux systems administrator with 9 years running production fleets in Poland. I look after 1,400 RHEL and Debian servers at a retail bank, keep core platforms at 99.98% uptime, and replaced hand-built servers with Ansible and Terraform so a patched, compliant host is ready in 12 minutes.
Experience
Senior Linux Systems Administrator
mBank · Warsaw
Apr 2021 – Present
99.98%Core uptime
1,400Servers
12 minHost build
- Run 1,400 RHEL 8/9 and Debian servers across two data centres for mobile banking, cards and payments
- Built Ansible roles and Terraform modules for VMware; monthly patching now covers 100% of hosts in one weekend window
- Hardened hosts to CIS Level 1 and passed the KNF (Polish FSA) IT audit with no findings on server configuration
Systems Administrator
Allegro · Poznań
Jun 2018 – Mar 2021
−41%Alert noise
- Moved monitoring from Nagios to Prometheus and Grafana for 900 hosts; tuned rules cut on-call pages by 41%
- Kept the marketplace stable through Black Friday peaks of 4× normal traffic with zero platform outages
Junior Unix Administrator
Atos · Warsaw
Sep 2016 – May 2018
- Supported Linux and AIX hosts for 6 enterprise clients; automated user and backup checks with Bash, saving 10 hours a week
Selected projects
Golden-image pipeline
Packer + Ansible + GitLab CI; CIS-hardened RHEL image rebuilt monthly, host build down to 12 minutes
Data-centre DR test
Full failover of payments stack in 38 minutes against a 60-minute regulatory target
Certifications
- Red Hat Certified Engineer (RHCE)Red Hat · Mar 2022
- Red Hat Certified System Administrator (RHCSA)Red Hat · Nov 2019
- HashiCorp Certified: Terraform AssociateHashiCorp · Jun 2023
- LPIC-2Linux Professional Institute · Feb 2018
Education
BEng · Computer Engineering
Politechnika Warszawska
Oct 2012 – Jul 2016
Languages
- PolishNative
- EnglishFluent
- GermanConversational (B1)
Summary example
Linux systems administrator with [N] years running production fleets in Poland. I look after [N] RHEL and Debian servers at a retail bank, keep core platforms at [X%] uptime, and replaced hand-built servers with Ansible and Terraform so a patched, compliant host is ready in [N] minutes.
Example bullet points for a Systems Administrator
- Run [N] RHEL 8/[N] and Debian servers across two data centres for mobile banking, cards and payments
- Built Ansible roles and Terraform modules for VMware; monthly patching now covers [X%] of hosts in one weekend window
- Hardened hosts to CIS Level [N] and passed the KNF (Polish FSA) IT audit with no findings on server configuration
- Moved monitoring from Nagios to Prometheus and Grafana for [N] hosts; tuned rules cut on-call pages by [X%]
- Kept the marketplace stable through Black Friday peaks of [N]× normal traffic with zero platform outages
- Supported Linux and AIX hosts for [N] enterprise clients; automated user and backup checks with Bash, saving [N] hours a week
Replace the [brackets] with your own numbers and facts. Never claim results you didn't achieve.
Skills to include
- RHEL 8/9
- Debian
- VMware vSphere
- KVM
- systemd
- LVM / XFS
- Ansible
- Terraform
- Bash
- Python
- GitLab CI
- Prometheus
Tips for a Systems Administrator resume
- Put the hard requirements recruiters screen for in the top third: RHEL 8/9, Debian, VMware vSphere.
- List current credentials with the issuing body, e.g. Red Hat Certified Engineer (RHCE), Red Hat Certified System Administrator (RHCSA).
- Give every recent role at least one measured result — for example core uptime.
- Match the job title in your headline to the posting where it is honest to do so.
- Run the built-in resume checker and paste the job description into the keyword match before you download.
Related: How to write a resume · Action verbs · All templates