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Systems Administrator job description

A Systems Administrator manages an organization's IT infrastructure, ensuring server uptime, cloud security, and network stability. Learn what a SysAdmin does.

Published August 2, 2024Updated May 16, 20263131 likes
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Job brief

We are looking for a dedicated Systems Administrator to join our IT infrastructure team and maintain the high-availability environments that drive our core business services. You will oversee our hybrid-cloud server fleet, implement security hardening across all production nodes, and lead initiatives to improve our disaster recovery capabilities. This role offers the opportunity to shape our IT roadmap, adopt cutting-edge automation tools, and work closely with engineering teams to optimize system throughput. If you are passionate about technical excellence, infrastructure stability, and scalable growth, we invite you to help us build a world-class IT environment.

Key highlights

  • Configure and maintain Linux and Windows server environments to ensure 99.9% uptime for business-critical applications.
  • Implement security hardening protocols, including firewall configurations, patch management, and strict identity and access control measures.
  • Administer cloud-based infrastructure within AWS or Azure environments, managing VPCs, IAM roles, and cloud-native storage solutions.
  • Script routine maintenance and deployment tasks using Python, Bash, or PowerShell to minimize manual intervention and human error.

What is a Systems Administrator?

A Systems Administrator is an IT professional responsible for the configuration, operation, and maintenance of computer systems, servers, and network infrastructure. By managing cloud environments like AWS or Azure and physical data centers, a Systems Administrator ensures that business-critical applications remain highly available and secure. Their core domain expertise encompasses server administration, identity and access management (IAM), and disaster recovery planning, all of which are essential to modern enterprise operations. Through rigorous system monitoring and automation, a Systems Administrator proactively mitigates risks, ensuring the reliability and scalability of the company’s entire digital ecosystem.

What does a Systems Administrator do?

On a daily basis, a Systems Administrator manages server health, patches software vulnerabilities, and audits system logs using tools like Splunk or ELK to identify performance bottlenecks. They collaborate with DevOps and Security teams to automate repetitive tasks using scripting languages like Bash, PowerShell, or Python, while ensuring that infrastructure-as-code deployments remain consistent. A Systems Administrator also handles user account provisioning, monitors VPN and network latency, and executes backup and restoration protocols to protect against data loss. Their work culminates in stable, optimized digital platforms that allow employees and customers to access critical services without interruption.

Key responsibilities

  • Configure and maintain Linux and Windows server environments to ensure 99.9% uptime for business-critical applications.
  • Manage virtualized infrastructure using VMware or Hyper-V, including the allocation of compute, storage, and networking resources.
  • Develop and execute automated backup and disaster recovery plans to ensure data integrity across multi-site data centers.
  • Implement security hardening protocols, including firewall configurations, patch management, and strict identity and access control measures.
  • Monitor system health and resource utilization using tools like Zabbix, Nagios, or Datadog to proactively resolve performance issues.
  • Administer cloud-based infrastructure within AWS or Azure environments, managing VPCs, IAM roles, and cloud-native storage solutions.
  • Script routine maintenance and deployment tasks using Python, Bash, or PowerShell to minimize manual intervention and human error.
  • Document system architecture, configuration changes, and incident response procedures to facilitate knowledge sharing within the IT team.

Requirements and skills

  • 5+ years of experience in systems administration, infrastructure management, or related IT operations roles.
  • Proficiency in administering Linux distributions (RHEL, Ubuntu, or CentOS) and Windows Server 2019/2022 environments.
  • Expertise in cloud platforms including AWS (EC2, S3, RDS) or Azure (Virtual Machines, Storage Accounts, Entra ID).
  • Solid understanding of network protocols, including DNS, DHCP, VPN, TCP/IP, and firewall traffic analysis.
  • Demonstrated experience with Infrastructure-as-Code (IaC) tools such as Terraform, Ansible, or Puppet for configuration management.
  • Relevant certifications such as CompTIA Server+, RHCE (Red Hat Certified Engineer), or Microsoft Certified: Azure Administrator.
  • Bachelor’s degree in Computer Science, Information Technology, or equivalent practical experience in technical systems management.
  • Ability to explain complex infrastructure limitations and technical solutions to non-technical business stakeholders clearly.

FAQs

What does a Systems Administrator do on a daily basis?

A Systems Administrator is responsible for the health and stability of an organization’s IT infrastructure. Daily tasks include monitoring system performance, applying security patches, managing user access rights, and troubleshooting hardware or software issues reported by employees. They also spend time automating routine tasks through scripting and collaborating with DevOps teams to deploy infrastructure changes that support new software releases.

What are the essential skills for a Systems Administrator?

The essential skills for a Systems Administrator include deep knowledge of operating systems like Linux and Windows, networking fundamentals, and cloud platform management (AWS/Azure). Proficiency in scripting languages such as PowerShell, Python, or Bash is critical for automation, as is experience with virtualization and container technologies. Additionally, strong problem-solving capabilities and a methodical approach to disaster recovery are vital for maintaining system integrity.

Who does a Systems Administrator typically work with?

A Systems Administrator functions as a bridge between various technical departments, collaborating frequently with DevOps engineers, Network Architects, and IT Security analysts. They also interact with software developers to provide the necessary server environments for application testing and deployment. In larger organizations, they may work alongside help desk support teams to resolve escalated technical incidents that impact broader system access.

How do I become a Systems Administrator?

To become a Systems Administrator, you should typically pursue a degree in Information Technology or Computer Science, though many gain entry through technical certifications like CompTIA Network+, Security+, or vendor-specific credentials such as the AWS Certified SysOps Administrator. Building a home lab to practice managing servers and networks is an excellent way to gain hands-on experience. Developing a strong foundation in scripting and system security will also significantly improve your career prospects.