Network Security Administrator Job at Robert Half (Phoenix)

Network Security Administrator

We are looking for a skilled Network Security Administrator to join our team on ...

Location

United States , Taunton

Salary:

Not provided

Robert Half

Expiration Date

Until further notice

Requirements

Proven experience in cybersecurity, including application and enterprise security
Proficiency in managing Security Information and Event Management (SIEM) tools
Strong knowledge of network security protocols and best practices
Expertise in configuring and maintaining Microsoft technologies such as Active Directory and Exchange Server
Familiarity with virtualization platforms and cloud services
Ability to develop technical documentation and adhere to established frameworks
Excellent problem-solving skills and ability to respond promptly to security threats
Strong communication and training skills for delivering technical concepts to diverse teams

Job Responsibility

Install, configure, and troubleshoot software and hardware systems, ensuring optimal functionality
Provide comprehensive support for server operating systems, virtualization platforms, backups, antivirus solutions, and user environments
Configure and maintain network infrastructure devices, including routers, firewalls, switches, servers, load balancers, and intrusion detection systems
Manage cloud services and Microsoft technologies such as Active Directory, Group Policy, and Exchange Server
Safeguard the integrity and security of systems and networks, implementing robust measures for firewalls, storage solutions, and backup systems
Develop and maintain detailed documentation for systems and networks, adhering to organizational cybersecurity frameworks
Conduct system analysis to ensure compatibility with emerging technologies and recommend innovative solutions
Deliver training sessions on applications and systems for staff and IT team members
Monitor systems daily, respond to security alerts, and address threats using advanced tools
Research and implement automated approaches to streamline system administration tasks

What we offer

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

Network Security Administrator

We are looking for a skilled Network Security Administrator to join our team in ...

Location

United States , Exton

Salary:

Not provided

Robert Half

Expiration Date

Until further notice

Requirements

Proven expertise in cybersecurity, application security, and enterprise security
Strong knowledge of Security Information and Event Management (SIEM) systems
Solid understanding of network security principles and best practices
Experience with troubleshooting and resolving complex hardware and software issues
Familiarity with system hardening techniques for infrastructure equipment
Ability to evaluate infrastructure security and recommend actionable improvements
Skilled in coordinating responses to security incidents and managing service desk tickets
Effective communication and documentation skills for creating and updating security procedures

Job Responsibility

Administer and configure IT security servers, appliances, and endpoint programs to ensure optimal functionality
Perform installations, upgrades, and replacements of security-related software and hardware as needed
Monitor security systems for alerts, respond to incidents, and escalate issues when necessary
Assess the security of the organization's infrastructure and recommend improvements to strengthen overall security
Troubleshoot and resolve issues with IT security equipment and applications
Conduct scheduled security scans, implement remediation processes, and address vulnerabilities
Manage and prioritize security-related tickets from the service desk, providing first-level support and coordinating resolutions
Develop and maintain policies and procedures related to IT security operations
Participate in audits, penetration tests, and disaster recovery exercises to ensure compliance and readiness
Contribute to the development and enhancement of organizational security programs and initiatives

What we offer

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

Network Security Administrator

The Network Security Administrator is responsible for protecting the organizatio...

Location

United States , Marysville

Salary:

Not provided

Robert Half

Expiration Date

Until further notice

Requirements

3–7 years of experience in network security operations or firewall engineering
Hands‑on experience with: Next-Generation Firewall NGFW and site‑to‑site/remote access VPNs
Strong understanding of IP networking (TCP/IP, routing, switching, VLANs, BGP/OSPF, NAT)
Experience with log analysis, packet captures, and troubleshooting tools (e.g., Wireshark)
Knowledge of threat prevention technologies (IDS/IPS, URL filtering, DNS security, malware analysis)
Overtime, frequency depends on business needs and support requirements for production infrastructure
On call availability, PC equipment & access provided for quick response to incidents, anytime
providing support, troubleshooting & resolve remote or on-site
Weekend and or adjusted shift required to execute & verify system changes for the application, Application hardware or software
Open office environment, align with all plant policies and all required training

Job Responsibility

Configure, manage, and maintain Next‑Generation Firewalls (NGFW), including policies, objects, NAT rules, App‑ID, User‑ID, threat prevention profiles, and Remote access VPN, ACL’s, IDS/IPS policies
Perform regular firewall rule reviews, cleanup, and optimization to improve performance and reduce risk
Monitor network security alerts, traffic anomalies, and firewall logs using vendor specific tools, SIEM platforms, and packet capture utilities
Investigate and remediate network‑based security incidents, coordinating with SOC or incident response teams as necessary
Perform security event correlation and escalation following established SOPs
Support secure network connectivity across data centers, branch sites, cloud environments, and remote access solutions
Troubleshoot layer 2/3 issues related to routing, switching, VPN tunnels, and connectivity impacts to security appliances
Assist in deploying secure architectures for new network builds, migrations, and cloud integrations

What we offer

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

Fulltime

Security Network Administrator

This position is responsible for day-to-day network and computer security to pro...

Location

United States , Newkirk

Salary:

55000.00 USD / Year

7 Clans Casinos

Expiration Date

Until further notice

Requirements

Bachelor’s degree or equivalent combination of education and work experience is required
6 years of systems administration or network administration experience
Guest Service experience preferred, however not required
Proven experience in network administration or a related field
Strong knowledge of network protocols, architectures, and security measures
Experience with load balancing technologies and techniques
Familiarity with system administration tasks related to network management
Experience with cloud platforms such as Azure or AWS
Knowledge of VPN (Virtual Private Network) technologies and configurations
Understanding of APIs (Application Programming Interfaces) for integrating network systems

Job Responsibility

Design, implement, and maintain network infrastructure, including routers, switches, firewalls, and load balancers
Monitor network performance and troubleshoot issues to ensure optimal network availability and performance
Manage network security measures, including implementing and maintaining firewalls, VPNs, and intrusion detection systems (IDS)
Collaborate with cross-functional teams to design and implement network architecture based on business requirements
Configure and maintain network protocols, such as TCP/IP, DNS, DHCP, and SNMP
Perform system administration tasks related to network management, including user access control and system backups
Conduct regular network audits to identify vulnerabilities and recommend necessary security enhancements
Stay up to date with emerging technologies and industry trends related to network administration
Train users and promote security awareness to ensure system security
Act as the focal point for information and computer security matters

Fulltime

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

Network and Security Administrator

Digital transformation is the cornerstone of Sopra Steria’s commitment to innova...

Location

Luxembourg , Leudelange

Salary:

Not provided

Sopra Steria

Expiration Date

Until further notice

Requirements

Bachelor’s or Master’s degree in Computer Science, Information Systems, or a related field
First experience in network administration is a plus
Excellent problem-solving and analytical skills, with a focus on delivering practical and innovative solutions
Strong communication and interpersonal skills to engage with technical and non-technical stakeholders effectively
EU citizenship
English and French required

Job Responsibility

Perform a critical review of network configurations from a functional perspective
Perform a critical review of network configurations from a security perspective
Contribute to the necessary hardening of the network infrastructure
Provide insights on the current architecture and suggest improvements

What we offer

Access to our Sopra Steria training and personal development academy
A company car lease or mobility budget
A company laptop and phone
Private health insurance coverage
Meal vouchers
Social security and pension plan
A competitive salary
26 holiday days

Fulltime

Security, Network, And IT Administrator

Location

Moldova , Chisinau

Salary:

Not provided

Yopeso

Expiration Date

Until further notice

Requirements

Hyper-V expert (alternative: VMware ESXi)
Windows Administration expert
Scripting and coding experience for Hyper-V automation
Advanced security knowledge, especially regarding system hardening
Experience with network devices (switches, routers, firewalls)
Basic knowledge of database handling would be a plus
Advanced Python skills for security testing automation would be a plus
Structured and conscientious way of working is mandatory

Job Responsibility

Administration and maintenance of a virtualized test environment (Hyper-V)
Install, configure, and maintain virtual machines, operating systems, and applications
Install and configure physical and virtual network devices
Monitor system and network performance
Manage the full lifecycle of virtualization and network components
Maintain and manage backup and recovery processes
Troubleshoot issues across the Hyper-V environment and connected network infrastructure
Administer and maintain security applications
Provide technical support and create documentation
Track technical developments in IT and OT security

What we offer

Competitive remuneration
Remote work
Sports/leisure benefit
20 sick leave days paid at 100%
32 calendar days of vacation
Team events
Professional development plan with guidance and mentorship
Training and development opportunities with an allocated budget
Professional Certifications
Optional medical insurance

Fulltime

Security, Network, and IT Administrator

What we are we looking for Skills: Hyper-V expert (alternative: VMware ESXi) Win...

Location

Salary:

Not provided

Yopeso

Expiration Date

Until further notice

Requirements

MSc degree in computer science or electrical engineering, ideally with a focus on IT, security, automation, or software development - or comparable education and professional training with additional qualifications
Proven hands-on experience in IT or system administration (Windows mandatory
Linux experience a strong plus
macOS is a plus)
Strong knowledge of virtualization technologies, with focus on Hyper-V and/or VMware ESXi
Solid experience with physical and virtual network infrastructure - configuration and administration of switches, routers, and firewalls
Experience with containerization technologies (e.g. Docker, Kubernetes)
Scripting experience with common languages such as Bash and Python
experience with PowerShell for Windows/Hyper-V automation is a plus
Ability to work in a self-guided and result-oriented way, with a clear drive to become a recognized technical expert in your area

Job Responsibility

Administration and maintenance of a virtualized test environment (Hyper-V) serving as the technical foundation for critical infrastructure projects in energy systems (HVDC, FACTS)
Install, configure, and maintain virtual machines, operating systems, and applications within the test environment
Install and configure physical and virtual network devices, including switches, routers, and firewalls
Monitor system and network performance to identify and predict problems and make proactive adjustments
Manage the full lifecycle of virtualization and network components in alignment with cybersecurity guidelines and mandatory patching activities
Maintain and manage backup and recovery processes for the test environment
Troubleshoot and resolve issues across the Hyper-V environment and connected network infrastructure
Administer and maintain security applications within the test environment, including endpoint protection, vulnerability scanning tools, and access control systems
Provide technical support and create documentation for Hyper-V processes, network configurations, and security procedures
Track technical developments and technological trends in IT and OT security

What we offer

Competitive remuneration
Remote work
24 days off per year and floating days
Private clinic health services Regina Maria Medical Insurance
Flexible benefits through Up multibenefits platform
Referral bonus scheme
Team events, online or at the office
Training and development opportunities with allocated budget
Professional Certifications
Knowledge sharing context

Fulltime

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Network Security Administrator

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