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Senior System Administrator - resume example

Not sure what to put on your resume for the Senior System Administrator role? We've analyzed the common theme among resumes for this specific position, alongside researching what employers typically expect from those applying.
Illustration: TaskTeller

John Doe | Senior Systems Professional

(123) 456-7890 | ️ |

1234 Tech Avenue, Silicon Valley, CA

Professional Summary

Dynamic and results-oriented IT professional with over 10 years of experience in managing complex server environments and leading technical teams. Proven track record in designing and implementing robust system solutions that enhance operational efficiency and security. Adept at strategic planning, project management, and fostering cross-functional collaboration to drive business success.

Technical Skills

  • Operating Systems: Windows Server, Linux, Unix
  • Virtualization: VMware, Hyper-V
  • Cloud Services: AWS, Azure, Google Cloud Platform
  • Networking: TCP/IP, DNS, DHCP, VPN
  • Security: Firewalls, IDS/IPS, Endpoint Protection
  • Scripting: PowerShell, Bash, Python
  • Database Management: SQL Server, MySQL
  • DevOps Tools: Docker, Kubernetes, Ansible

Professional Experience

Lead Systems Engineer | ABC Tech Solutions, Silicon Valley, CA | July 2016 – Present

  • Spearheaded the migration of on-premises infrastructure to a hybrid cloud environment, resulting in a 20% cost reduction and improved scalability.
  • Managed a team of 8 system administrators, fostering a culture of continuous learning and innovation.
  • Designed and implemented a company-wide disaster recovery plan, reducing potential downtime by 35%.

Systems Administrator III | XYZ Corp, San Francisco, CA | May 2011 – June 2016

  • Oversaw the daily operations of a 500+ server data center, maintaining 99.99% uptime.
  • Automated routine maintenance tasks, increasing team productivity by 40%.
  • Collaborated with the cybersecurity team to harden systems against external threats, decreasing security incidents by 25%.


Bachelor of Science in Computer Science
University of California, Berkeley | May 2011


  • Certified Information Systems Security Professional (CISSP)
  • Microsoft Certified: Azure Administrator Associate
  • Red Hat Certified System Administrator (RHCSA)

Professional Affiliations

  • Member, North American System Administrators Guild (NASAG)
  • Member, Information Systems Security Association (ISSA)

Additional Information

  • Fluent in Spanish and English
  • Regular speaker at the Annual SysAdmin Conference
  • Volunteer IT consultant for non-profits

Remember, this resume is a starting point. Customize each section to reflect your unique skills, experiences, and accomplishments. By doing so, you’ll create a compelling narrative that not only demonstrates your technical expertise but also your strategic impact on the organizations you’ve supported.

How to Make Your Resume ATS-Friendly

ATS (Applicant Tracking System) is a software application that automates the recruitment process for employers. It streamlines sorting, scanning, and ranking job applications by filtering resumes based on predefined keywords, skills, job titles, and other criteria. This assists recruiters in efficiently identifying qualified candidates for open positions.

  • Use simple formatting: ATS systems best read resumes with clear and straightforward formatting. Avoid using headers or footers, tables, images, or graphics, as these can confuse the ATS.
  • Include relevant keywords: Tailor your resume with keywords from the job description. ATS systems scan for these keywords to determine if your skills and experiences match the job requirements.
  • Stick to standard headings: Use common heading titles like “Work Experience,” “Education,” and “Skills” to ensure the ATS can easily find and categorize your information.
  • Choose the correct file type: Submit your resume as a Word document (.doc or .docx) or a plain text file (.txt) for maximum compatibility. Avoid PDFs unless specified.
  • Keep consistent job titles: If your previous job titles are not industry-standard, consider altering them slightly (without misrepresenting your role) to match more familiar titles.
  • Avoid fancy fonts or creative layouts: Stick to traditional fonts like Arial, Calibri, or Times New Roman. Creative designs and fonts might look appealing but can be problematic for ATS parsing.
  • Use full forms and acronyms: If you include technical terms or certifications, use their spelled-out form and acronyms to ensure the ATS recognizes them.
  • Be precise with dates: Format dates clearly and consistently, ideally in a ‘Month YYYY’ format.
  • Proofread for spelling and grammar: Errors can confuse the ATS. Proofread your resume or use a tool to check for accuracy.
  • Test your resume: Before submitting, test it through an ATS resume checker to see how it reads your information.

By following these guidelines, your resume will be better equipped to pass through ATS filters, increasing your chances of landing an interview.

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