It Systems & Network Administrator Job at Robert Half (Oklahoma City)

IT Systems, Network, & Security Administrator

We’re seeking a IT Systems, Network, & Security Administrator for a project-base...

Location

United States , Los Angeles

Salary:

Not provided

Tech Holding

Expiration Date

Until further notice

Requirements

Bachelor’s degree from an accredited university in Business, Technology, or a related field required
At least 3 years of experience in an IT Systems Admin, Security Admin, or Senior IT Support role
Prior experience with cloud-based email security software, preferably Mimecast
Experience with mobile device management (MDM), preferably Microsoft Intune and/or Kandji
Strong knowledge of Microsoft 365 administration and Entra ID
Prior experience troubleshooting identity, access, and MFA-related issues
Solid understanding of email security concepts such as phishing, spoofing, DMARC, DKIM, and SPF
Comfortable supporting a mixed Windows and macOS environment
Ability to work in an unstructured, fast-paced environment while making sound judgment calls in security and user access scenarios
Must have a valid driver’s license and a reliable and fully insured vehicle as this role will be traveling throughout Los Angeles to support staff at LAFC Headquarters, BMO Stadium, and the LAFC Performance Center at California State University – Los Angeles

Job Responsibility

Administer and support the organization’s cloud-based email security platform, Mimecast, for issues relating to threat investigation, message tracing, and policy management
Monitor and respond to phishing, spoofing, and impersonation attempts
Perform physical network troubleshooting, including identifying cabling faults, checking patch panels, validating link lights, and ensuring proper switch/AP connectivity
Support the organization’s cloud-based identity and access management platform, Okta, day-to-day operations regarding user access, SSO access to internal and SaaS applications, and multi-factor authorization (MFA) issue resolution
Manage and monitor the organization's mobile device management (MDM) platforms, Microsoft Intune and Kandji, troubleshooting MDM enrollment issues, profile errors, and missing agents
Provide support and troubleshoot device compliance, deployment, and access issues for Windows and macOS devices
Oversee user account management in Microsoft 365, Entra ID, and Active Directory
Support employee onboarding and offboarding, including user provisioning, device setup, and access changes
Provide Tier 1–3 helpdesk support, including MFA, password resets, access issues, and escalation handling
Review and triage security alerts in Microsoft Defender and Entra ID

New

IT Systems & Network Technician

Our Client is looking for an IT Systems & Network Technician to support clients ...

Location

United States , Burton

Salary:

Not provided

Robert Half

Expiration Date

Until further notice

Requirements

At least 3 years of experience in IT support, systems administration, networking, or a similar technical role
Working knowledge of TCP/IP, subnetting, VLANs, routing fundamentals, and overall network design concepts
Hands-on experience with Cisco networking equipment, Cisco routers, firewalls, VPN technologies, and WatchGuard security appliances
Familiarity with advanced networking concepts such as Border Gateway Protocol (BGP) and secure connectivity best practices
Strong experience supporting Windows 10/11, Windows Server, Active Directory, Group Policy, and related infrastructure services
Background using remote monitoring and management tools as well as services automation platforms in a service-driven environment
Ability to manage multiple priorities in a fast-paced setting while maintaining excellent customer service and clear documentation

Job Responsibility

Provide first- and second-level technical support for client systems, resolving issues related to desktops, servers, connectivity, and user access
Configure, maintain, and troubleshoot network equipment and security devices, including firewalls, routers, VPNs, and cloud-managed networking platforms
Monitor client environments to identify performance concerns, service interruptions, and security risks before they become larger problems
Administer Windows 10 and 11 endpoints along with Windows Server systems, including core services such as Active Directory, Group Policy, and network infrastructure roles
Support identity and access management processes using tools such as Azure AD / Entra ID and multi-factor authentication platforms like Cisco Duo
Document network layouts, system configurations, support activity, and remediation steps to ensure accurate technical records across client accounts
Use remote monitoring, management, and service tracking platforms to manage tickets, prioritize work, and deliver timely updates to stakeholders
Contribute to infrastructure improvements and technical changes, including system upgrades or internal platform transitions when assigned

What we offer

Medical, vision, dental, and life and disability insurance
401(k) plan enrollment

Systems & Network Administrator

This is a hands-on opportunity for a high-potential IT professional who wants to...

Location

United States , Eden Prairie

Salary:

Not provided

Robert Half

Expiration Date

Until further notice

Requirements

4+ years across network and infrastructure environments with strong core skills in systems, TCP/IP, routing, switching, VPNs, and firewalls
Broad technical exposure across systems, support, and infrastructure (true generalist mindset)
Experience with user account management, email systems, and access provisioning
Working knowledge of Windows environments, Active Directory, and basic networking concepts
Exposure to scripting or automation (PowerShell preferred)
Proven ability to troubleshoot across multiple layers (user, system, application)
Experience supporting or deploying endpoints, servers, or hybrid environments

Job Responsibility

Provide hands-on support across infrastructure, user systems, and core IT operations in a true team-oriented environment
Manage and support user access, account provisioning, email systems, and identity tools (Active Directory, etc.)
Step in across responsibilities as needed, including coverage for teammates to ensure continuity of operations
Troubleshoot a wide range of issues, including system access, application errors, network connectivity, and endpoint performance
Assist with building, configuring, and maintaining servers and infrastructure components
Analyze application logs and system behavior to resolve issues and improve performance
Develop and document repeatable processes to improve efficiency and consistency
Identify and implement automation opportunities (PowerShell or similar) to streamline manual tasks
Contribute to security best practices, user access governance, and overall system reliability
Support deployments, system upgrades, and ongoing IT initiatives

What we offer

medical
vision
dental
life and disability insurance
401(k) plan

Fulltime

Network & Systems Administrator

Maintain and support the organization's local area networks (LAN), wide area net...

Location

United States , Lincoln

Salary:

Not provided

LI-COR

Expiration Date

Until further notice

Requirements

AAS in Computer Science, Information Technology, or related field, or equivalent combination of education and experience
Bachelor's Degree preferred
Minimum five years of experience in network administration or systems administration
Experience with local area networks, Microsoft Active Directory, Windows Server operating systems, virtualization platforms, Office 365 administration, PC hardware and software, and enterprise applications
Experience administering DNS, DHCP, Group Policy, network security technologies, and remote access solutions
Experience with VMware, Microsoft 365, Microsoft Teams Phone, and cloud-based services preferred
Experience supporting multi-site or international environments is preferred
Experience with Linux and SQL Server is preferred but not required

Job Responsibility

Administer, maintain, and support enterprise network infrastructure including switches, routers, firewalls, wireless access points, and related hardware
Administer and maintain Microsoft Active Directory services including DNS, DHCP, WSUS, and Group Policy
Administer and maintain VMware virtual infrastructure
Monitor system performance and availability
troubleshoot and resolve network, server, and connectivity issues
Maintain server backup systems, replication processes, and disaster recovery procedures
Administer and support the Microsoft Teams Phone System, including user provisioning, call routing, auto attendants, and call queues
Administer and maintain Microsoft 365 services including Exchange Online, SharePoint Online, OneDrive, Teams, and Entra ID
Assist with planning, testing, and implementing network, server, and software upgrades
Deploy, maintain, and troubleshoot endpoint devices, operating systems, software applications, patch management systems, and endpoint security solutions

IT Network Administrator

Manage day-to-day network operations and support, including all service request ...

Location

Congo, the Democratic Republic of the , Kinshasa

Salary:

Not provided

Vodafone

Expiration Date

Until further notice

Requirements

Bachelor's degree in Computer Science, Information Technology, or related field
Hands-on experience in Network Security: Routing and Switching (TCP/IP Suite, OSPF, BGP, EIGRP, VLANs, STP)
Firewall protection, IPS/IDS, Filtering, Anti-Virus
VPN IPsec, SSL and Remote access
Experience in Data Center solutions, Cisco Nexus and ACI
Ability to interact with third parties (Suppliers, clients, customers), coordinating and facilitating the work of others
Excellent problem-solving, communication, and leadership skills
The ability to work independently and with teams
A customer-oriented attitude and desire to help others succeed
Personal and professional integrity, which communicates a sense of mission

Job Responsibility

Manage day-to-day network operations and support, including all service request break/fix issues and the assignment of non-routine or unplanned tasks
Installs, configures, maintains, and monitors the rollout and Cyber security compliance of switches, routers, Firewalls, any other network appliances, and associated hardware and software
Analyses, diagnoses, and resolves network hardware and software problems or failures to all networking devices in the whole country
Business Application Availability Management
Monitor network performance (availability, utilization, throughput, and latency) and test for weaknesses
Analyze and identify all technical problems and provide consultation and training to help all users
Analyze IT network systems and ensure compliance to all IT and Vodafone Group standard practices
Prepare and maintain all records and files in relation to IT assets, network performance and problems
Assist users, communicate all IT policies to users, and ensure user compliance
Develop and facilitate various initiatives to develop user compliance activities

Fulltime

Senior IT Systems Administrator

Reporting to the Director of IT and Data Sciences, we are seeking a Senior IT Sy...

Location

United States , Philadelphia

Salary:

Not provided

Cabaletta Bio Inc

Expiration Date

Until further notice

Requirements

Bachelor’s degree with 5+ years of experience as a Systems Administrator or similar role in biotech, pharmaceutical, or life sciences industries
Experience with LAN/WAN networks, including wireless and firewall management
Strong experience with AWS services, including EC2, VPC, Elastic Load Balancing (ALB/NLB), RDS, and S3
Strong experience with Windows Server (2016/2019/2022) and RHEL (7/8/9)
Experience supporting Microsoft 365 applications, including Exchange, SharePoint, Teams, and Entra ID (SSO, SAML, OIDC)
Solid understanding of Active Directory, Group Policy, and file system permissions
Experience with backup and recovery platforms
Experience supporting cybersecurity practices in a regulated environment, including patch management, access controls, and endpoint security
Familiarity with firewalls, network security concepts, and identity management
Excellent problem-solving, communication, and organizational skills

Job Responsibility

Own and contribute to the design, implementation, configuration, and support of servers, network devices, and firewalls in collaboration with IT and business teams
Own the operational health of IT systems, including end-user support, break-fix activities, monitoring, patch management, system backup/recovery, system administration, troubleshooting, and issue resolution
Lead and coordinate Tier 2/3 escalations, ensuring timely resolution with internal stakeholders and external partners
Serve as a primary technical point of contact for external service providers, ensuring alignment with operational and security expectations
Partner with external support providers to maintain consistent service delivery, including responsiveness, quality, and adherence to service expectations
Review escalations, recurring issues, and incident trends to identify improvement opportunities and reduce operational risk
Coordinate and communicate infrastructure and system changes, ensuring proper documentation and alignment with internal processes
Collaborate with internal stakeholders and service providers to prioritize work and support a high-quality end-user experience
Contribute to continuous improvement of IT service delivery processes and operational practices
Administer and support core Linux and Microsoft technologies across cloud and hybrid environments

What we offer

health and retirement
PTO
stock option plans

Fulltime

Senior IT Systems Administrator

This is a Contract to permanent position, offering an exciting opportunity to su...

Location

United States , New York

Salary:

Not provided

Robert Half

Expiration Date

Until further notice

Requirements

Minimum of 5 years of experience in IT systems administration or a related field
Proficiency in tools such as Slack, Rippling, Google Workspace, Freshservice, and Azure Sentinel
Familiarity with Airtable, HubSpot, Confluence, Figma, and Five9 platforms
Strong troubleshooting and problem-solving skills for both hardware and software issues
Demonstrated ability to manage endpoint security operations and SaaS services effectively
Experience in vendor management and IT inventory oversight
Solid understanding of network administration and optimization, including Ubiquiti systems
Excellent communication skills and ability to collaborate across teams

Job Responsibility

Manage and maintain SaaS services, endpoint security, vendor relationships, and IT inventory to ensure smooth day-to-day operations
Oversee technical support for end-users, addressing issues promptly to maximize productivity
Lead hardware and software deployment, troubleshooting, and maintenance efforts
Collaborate with People Operations to streamline onboarding and offboarding processes, including equipment provisioning through Rippling
Administer and optimize office networks, ensuring robust connectivity and reliability using Ubiquiti
Support Google Workspace operations, maintaining functionality and resolving issues as needed
Work closely with internal development teams to provide technical assistance for proprietary applications
Implement security best practices across IT systems and networks to safeguard organizational data
Ensure the functionality of Google Meet and AV equipment within conference rooms to support uninterrupted meetings
Standardize processes and establish operational best practices to improve transparency, speed, and quality

What we offer

medical, vision, dental, and life and disability insurance
eligible to enroll in our company 401(k) plan

IT Systems Administrator

We are looking for a skilled Systems Administrator to oversee and optimize our s...

Location

United States , Frisco

Salary:

Not provided

Robert Half

Expiration Date

Until further notice

Requirements

Associate’s or Bachelor’s degree in Information Technology or a related field, or equivalent relevant experience
A minimum of 5 years of experience in systems administration or infrastructure support
Proficiency in troubleshooting and delivering excellent customer service in IT environments
Hands-on experience with Windows 11, Microsoft 365, Azure, and other business-critical applications
Familiarity with IT ticketing systems, incident management, and hardware maintenance
Expertise in Active Directory, Microsoft Windows Server, and Windows 10
Knowledge of Dell and Citrix technologies
Strong communication skills coupled with the ability to manage multiple tasks effectively

Job Responsibility

Monitor and analyze server performance metrics, including memory, disk space, and network activity, while addressing alerts promptly
Automate operating system updates, security patches, and software installations to enhance system efficiency
Manage user accounts, permissions, and access controls to ensure proper security and functionality
Diagnose and resolve issues related to servers, applications, and connectivity to minimize downtime
Provide technical support for desktops, laptops, peripherals, and other end-user devices
Perform regular backups, verify their integrity, and test disaster recovery procedures to safeguard data
Review security logs and respond to potential threats in alignment with organizational protocols
Configure and optimize server settings to align with evolving business requirements
Maintain comprehensive documentation for systems, processes, and incidents to support operational continuity
Communicate system status, incidents, and performance metrics effectively to the IT Director

What we offer

medical
vision
dental
life and disability insurance
company 401(k) plan

Select Country

It Systems & Network Administrator

Job Description

Requirements

What we offer

Looking for more opportunities?