System Administrator
About The Position
TEKsystems has partnered with one of Hawaii's premier staffing agencies to find an experienced System Administrator. This role involves managing, maintaining, and operating the IT infrastructure, focusing on the reliability, performance, and day-to-day operation of on-premises and virtualized environments. Key technologies include VMware vSphere, Windows and Linux servers, advanced firewalls, VPNs, and Web Application Firewalls (WAFs). The ideal candidate is hands-on, operationally strong, and capable of supporting business-critical systems.
Requirements
- 5+ years of experience in a System Administrator or infrastructure-focused role.
- Strong hands-on experience with VMware vSphere.
- Strong experience administering Windows Server environments.
- Solid experience administering Linux servers.
- Experience managing enterprise-grade firewalls, VPNs, and WAFs.
- Strong understanding of networking fundamentals (TCP/IP, routing, DNS, VLANs).
- Experience with monitoring and troubleshooting complex systems.
- Strong troubleshooting and analytical skills.
- Ability to prioritize and manage multiple tasks.
- Clear communication with both technical and non-technical stakeholders.
- Detail-oriented with strong documentation habits.
Nice To Haves
- Experience in enterprise or hybrid IT environments.
- Scripting or automation experience (PowerShell, Bash, Python).
- Experience working in highly available or business-critical systems.
- Relevant certifications (VMware, Microsoft, Linux, networking).
Responsibilities
- Administer and maintain VMware vSphere infrastructure, including host management, VM provisioning, performance tuning, and capacity planning.
- Install, configure, manage, and support Windows Server environments (Active Directory, DNS, DHCP, Group Policy, file and print services).
- Administer and support Linux servers (e.g., RHEL, Ubuntu, or equivalent).
- Perform system patching, upgrades, maintenance, and lifecycle management.
- Monitor system health, availability, and performance; troubleshoot and resolve infrastructure issues.
- Plan and execute infrastructure upgrades and improvements.
- Configure, manage, and maintain advanced firewalls (e.g., next-generation firewalls), including rule sets, NAT, routing, and logging.
- Administer VPN solutions (site-to-site and remote access).
- Manage and maintain Web Application Firewalls (WAFs) to support application availability and protection.
- Maintain reliable network connectivity across environments.
- Implement and maintain backup and disaster recovery solutions.
- Perform backup validation, restore testing, and disaster recovery exercises.
- Ensure system availability, redundancy, and recoverability.
- Develop and maintain scripts or automation using PowerShell, Bash, or similar tools.
- Create and maintain system documentation, diagrams, and operational runbooks.
- Provide Tier 2 / Tier 3 support for infrastructure-related incidents and service requests.
- Participate in on-call rotations and scheduled after-hours maintenance.
Benefits
- Company-paid medical and dental insurance
- Vacation and holiday pay
- 401(k) retirement plan with employer matching
- Group Life Insurance
- Tuition Assistance Program
- Credit union membership
- Corporate discounted membership at 24 HR Fitness & UFC Gym
- Corporate discounts with AAA and car rental agencies
- Entertainment discounts including movie tickets, Universal Studios, Disneyland and more
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What This Job Offers
Job Type
Full-time
Career Level
Senior
Education Level
No Education Listed
Number of Employees
501-1,000 employees
