Systems Administrator

IT/OT Infrastructure SpecialistLocation: HawaiiFull-Time | Industrial & Enterprise Technology EnvironmentHelp Power Critical Infrastructure Across HawaiiAre you a hands-on infrastructure professional who enjoys solving complex technical challenges across networking, virtualization, cybersecurity, and operational technology (OT) environments? We're seeking an IT/OT Infrastructure Specialist to support and enhance mission-critical infrastructure that keeps industrial, refinery, retail, and business operations running securely and efficiently.This is more than a traditional network engineering position. You'll work at the intersection of enterprise IT, industrial operations, cybersecurity, cloud-connected systems, virtualization, and infrastructure modernization, helping bridge the gap between IT and OT environments while ensuring reliability, security, and uptime.If you're passionate about infrastructure, enjoy working across diverse technologies, and want to make a direct impact in a highly visible operational environment, we'd love to hear from you.What You'll DoOperational Technology (OT) Infrastructure SupportSupport and maintain infrastructure used by industrial applications, process control systems, historians, monitoring platforms, and OT environments.Collaborate with OT engineers, process control teams, cybersecurity personnel, infrastructure teams, and vendors to ensure secure and reliable system operation.Assist with connectivity and support for SCADA, DCS, engineering workstations, application servers, and industrial support systems.Evaluate and document application dependencies, network behaviors, and operational requirements.Implement and support network segmentation strategies, including VLANs, ACLs, firewall policies, and secure access controls.Participate in troubleshooting and incident response activities impacting operational environments.Help maintain secure IT/OT boundaries through cybersecurity best practices such as least privilege access, asset management, vulnerability remediation, and controlled remote access.Infrastructure, Virtualization & Storage AdministrationSupport Windows Server and Linux-based environments, including vendor-managed industrial application platforms.Administer and maintain virtualization technologies such as:VMware vSphereHyper-VNutanixProxmoxSimilar enterprise virtualization platformsSupport clustered environments, high-availability systems, virtual machine lifecycle management, backup strategies, and disaster recovery planning.Maintain storage infrastructure, including SAN, NAS, and platforms such as TrueNAS.Configure and troubleshoot:NFSiSCSIStorage networkingMultipathingVolumes and datasetsFile shares and access controlsAssist with infrastructure modernization efforts, server migrations, storage upgrades, and virtualization of legacy systems.Validate system performance and functionality following maintenance activities and infrastructure changes.Network & Security OperationsSupport enterprise and OT network infrastructure including switches, routing, firewalls, and segmented environments.Maintain secure communications between business and operational technology networks.Assist with network performance monitoring, troubleshooting, and optimization.Support change management processes and ensure compliance with operational and security standards.Contribute to infrastructure documentation, architecture diagrams, and operational procedures.Required QualificationsExperience supporting Windows Server environments.Experience with VMware vSphere or comparable virtualization platforms.Working knowledge of enterprise networking concepts including:TCP/IPVLANsRouting and switchingFirewallsAccess Control Lists (ACLs)Familiarity with storage technologies, backups, and disaster recovery concepts.Experience supporting infrastructure in manufacturing, industrial, refinery, utilities, energy, or other operational environments is highly preferred.Strong troubleshooting skills across networks, servers, virtualization, and storage systems.Ability to work independently while collaborating effectively with cross-functional teams.Preferred QualificationsExperience supporting Operational Technology (OT) environments.Knowledge of industrial cybersecurity principles and IT/OT segmentation.Experience with SCADA, DCS, industrial monitoring systems, or process control environments.Exposure to Linux administration.Familiarity with cloud-connected infrastructure and hybrid environments.Experience with infrastructure migrations, hardware refresh projects, and modernization initiatives.What Makes This Opportunity UniqueWork across both enterprise IT and industrial operational technology environments.Gain exposure to critical infrastructure supporting essential operations throughout Hawaii.Collaborate with engineering, cybersecurity, operations, and infrastructure teams.Contribute to high-impact projects involving network segmentation, virtualization, cybersecurity, and infrastructure modernization.Join a team where reliability, security, innovation, and operational excellence are top priorities.If you're looking for an opportunity to expand your expertise beyond traditional networking and become a key contributor in a complex IT/OT environment, apply today.Job Type & LocationThis is a Contract to Hire position based out of Honolulu, HI.Pay and BenefitsThe pay range for this position is $40.00 - $55.00/hr. Individual compensation offered for this position within this range will depend on many factors, including qualifications, skills, relevant experience, job knowledge, geographic location, internal equity, and other pertinent job-related factors.Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits available for this temporary role may include the following: Medical, dental & vision Critical Illness, Accident, and Hospital 401(k) Retirement Plan Pre-tax and Roth post-tax contributions available Life Insurance (Voluntary Life & AD&D for the employee and dependents) Short and long-term disability Health Spending Account (HSA) Transportation benefits Employee Assistance Program Time Off/Leave (PTO, Vacation or Sick Leave)Workplace TypeThis is a fully onsite position in Honolulu,HI.Application DeadlineThis position is anticipated to close on Oct 20, 2026.About TEKsystemsWe're partners in transformation. We help clients activate ideas and solutions to take advantage of a new world of opportunity. We are a team of 80,000 strong, working with over 6,000 clients, including 80% of the Fortune 500, across North America, Europe and Asia. As an industry leader in Full-Stack Technology Services, Talent Services, and real-world application, we work with progressive leaders to drive change. That's the power of true partnership. TEKsystems is an Allegis Group company. The company is an equal opportunity employer and will consider all applications without regards to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.About TEKsystems and TEKsystems Global Services Were a leading provider of business and technology services. We accelerate business transformation for our customers. Our expertise in strategy, design, execution and operations unlocks business value through a range of solutions. Were a team of 80,000 strong, working with over 6,000 customers, including 80% of the Fortune 500 across North America, Europe and Asia, who partner with us for our scale, full-stack capabilities and speed. Were strategic thinkers, hands-on collaborators, helping customers capitalize on change and master the momentum of technology. Were building tomorrow by delivering business outcomes and making positive impacts in our global communities. TEKsystems and TEKsystems Global Services are Allegis Group companies. Learn more at TEKsystems.com.The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.San Francisco Fair Chance Ordinance: Pursuant to the San Francisco Fair Chance Ordinance, for all positions located in the city and county of San Francisco, we will consider for employment qualified applicants with arrest and conviction records.Massachusetts Lie Detector: It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.Use of Artificial Intelligence (AI): We may use Artificial Intelligence (AI) to support parts of our hiring process, including sourcing, screening, and evaluating candidates. AI helps assess applications and qualifications, but final decisions are made by our hiring team. By applying, you acknowledge and agree that your application may be reviewed using AI tools.Job SummaryJob number: JP- Profession: Systems Administrator/Engineer TEKsystems