Systems and Network Administrator

Cogstate

Systems and Network Administrator managing Windows and Linux infrastructure at Cogstate. Supporting cloud and virtualization services to enhance brain health assessments.

Posted 5/29/2026full-timeRemote • 🇺🇸 United StatesMid-LevelSenior💰 $90,000 - $100,000 per yearWebsite

Tech Stack

Tools & technologies

AzureCloudDNSFirewallsLinuxShell ScriptingSwitching

About the role

Key responsibilities & impact

Administer, maintain, and support Windows and Linux server infrastructure and enterprise systems.
Manage Active Directory, Group Policy, DNS, DHCP, file services, system access controls, and identity-related services.
Perform system upgrades, patching, configuration changes, lifecycle maintenance, and controlled change activities for servers and core platforms.
Monitor server health, performance, availability, and capacity, respond to alerts, and proactively address issues before service impact occurs.
Administer and support LAN, WAN, wireless, VPN, firewall, switching, and routing infrastructure.
Maintain Azure cloud infrastructure, including Azure virtual machines, networking, storage, identity, and security controls.
Support and maintain Hyper-V virtualized environments and core virtual infrastructure services.
Monitor network, cloud, and virtual infrastructure performance, availability, and security to ensure stable and reliable operations.
Support backup, restore, backup verification, disaster recovery, and business continuity processes for critical systems.
Provide high-level technical escalation support for infrastructure, server, network, virtualization, Linux, and cloud-related incidents.
Work with internal departments and vendors to implement technical solutions, infrastructure improvements, and service enhancements.
Follow change management processes for infrastructure changes, maintenance, upgrades, and planned maintenance activities.
Maintain technical documentation, procedures, configuration records, and diagrams.
Support security hardening, patch compliance, vulnerability remediation, access reviews, compliance activities, and continuous improvement initiatives.

Requirements

What you’ll need

Bachelor’s degree in Information Technology, Systems Administration, Computer Science, or a related field preferred.
3+ years’ experience in systems, network, or infrastructure administration.
Experience in Microsoft 365 and Azure administration.
Relevant technical certifications
Experience administering Active Directory, Group Policy, DNS, and DHCP.
Strong IT hardware, operating system, and infrastructure troubleshooting experience.
Experience administering Windows server environments and supporting core enterprise systems.
Experience with Microsoft 365, Azure administration, Azure virtual machines, and identity-related services.
Experience supporting VPN, firewalls, switches, wireless infrastructure, and core network services.
Experience with virtualization technologies, including Hyper-V.
Experience with backup and recovery solutions, system monitoring tools, patching, and infrastructure lifecycle maintenance.
Experience administering Linux server environments.
Experience with scripting and automation, preferably PowerShell and basic Linux shell scripting.
Experience with SAN/NAS and performance tuning.

Benefits

Comp & perks

Remote Work Practices: Cogstate is a virtual first company. Cogstate employees can work from anywhere where Cogstate is registered to business within the United States, Australia, or the United Kingdom!
Generous Paid Time-off: Cogstate employees receive 20 days of vacation leave, 10 days of personal leave and 10 paid public holidays.
401(k) Matching: As you invest in yourself and your future, Cogstate invests in you too: we match up to3% of your yearly salary in Cogstate’s 401k program.
Competitive Salary: We offer competitive base salaries plus additional earning opportunities based on the position.
Health, Dental & Vision Coverage: We've invested in comprehensive health & dental insurance options with competitive company contributions to help when you need it most. We also offer free vision insurance for all full-time employees.
Short-Term & Long Term Disability Life Insurance: 100% employer sponsored
Pre-Tax Benefits: Healthcare and Dependent Care Flexible Spending Accounts
Learning & Development Opportunities: Cogstate offers a robust learning program from mentorships to assistance with programs to improve knowledge or obtain certifications in applicable areas of interest.

ATS Keywords

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Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

Windows server administrationLinux server administrationActive DirectoryGroup PolicyDNSDHCPAzure administrationHyper-Vscriptingautomation

Soft Skills

troubleshootingtechnical supportcollaborationcommunicationproblem-solving

Certifications

relevant technical certifications