Network Security Admin Job at Robert Half (Johns Creek)

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 Admin Infrastructure Expert

Sopra Steria, a major Tech player in Europe with 50,000 employees in nearly 30 c...

Location

India , Chennai

Salary:

Not provided

Sopra Steria

Expiration Date

Until further notice

Requirements

Bachelor’s degree in computer science, Information Technology, or a related field
Relevant certifications such as CCNA, CCNP, Fortinet NSE, Palo Alto PCNSA, or Aruba Certified ClearPass Associate (ACCA) are highly desirable
Hands-on experience with FortiGate and Palo Alto firewalls
Proficiency in Aruba wireless solutions and ClearPass
Strong knowledge of network security principles, VLANs, and VPNs
Familiarity with network monitoring tools (SolarWinds, PRTG, etc.)
Total Experience Expected: 04-06 years

Job Responsibility

Design, configure, and deploy network solutions including routers, switches, and wireless networks
Implementation and support experience in routing protocols like BGP, OSPF and switching technologies VTP, VLAN, Ether Channel, HSRP/VRRP
Configure and manage FortiGate and Palo Alto firewalls, including creating security policies, VPN configurations, and threat prevention
Deploy and manage Aruba wireless solutions, including controllers and access points
Configure and maintain Aruba ClearPass for network access control (NAC) and authentication services
Conduct wireless site surveys to optimize coverage, performance, and security
Troubleshoot connectivity problems, hardware issues, and security vulnerabilities
Understanding 802.1X authentication and ensure secure access for all users and devices

What we offer

Commitment to fighting against all forms of discrimination
Inclusive and respectful work environment
All positions open to people with disabilities

Fulltime

Network Admin Senior Engineer-Infrastructure Management

Sopra Steria, a major Tech player in Europe, is hiring for the position of Netwo...

Location

India , Noida

Salary:

Not provided

Sopra Steria

Expiration Date

Until further notice

Requirements

Proven hands-on network engineering experience
Solid understanding of the OSI or TCP/IP model
Deep Hands on to understand the incident and troubleshooting with SLA
Deep understanding of networking routing protocols (e.g., Static, BGP, OSPF)
Deep understanding of VLAN, HSRP, VRRP, STP, VTP, VSS, VLS and VPC802.11, QoS, Ether-Channel
Deep Hands-on experience on Cisco, Nexus and HPE network devices e.g., router, switch
Hands-on experience with monitoring, network diagnostic and network analytics tools
Deep Hands-on experience on Cisco, Aruba Wireless Controller and Access Point
Deep understanding of Clear Pass, 802.1x, Radius, TACACS
Deep understanding and Hands on IPsec and Remote VPN

What we offer

Inclusive and respectful work environment
Open positions for people with disabilities
Commitment to fighting against all forms of discrimination

Security Engineer Analyst

At Ledger, we’re proud to be the global platform for digital assets and Web3, wi...

Location

France , Paris

Salary:

Not provided

Ledger

Expiration Date

Until further notice

Requirements

Solid understanding of network fundamentals: TCP/IP, routing, DNS, VPN, HTTP(S), TLS
Good grasp of core security concepts: Zero Trust, least privilege, segmentation, identity- and context-based access
Comfortable with Linux environments and at least one scripting language (ideally Python) plus basic Git usage
Interest in cloud environments (AWS/GCP/Azure or similar) and modern access patterns (bastions, proxies, SASE/ZTNA)
Ability to read and challenge technical documentation and propose pragmatic improvements
Proactive, curious, and willing to dive into low-level technical details
Interest in Web3 and hardware wallets is a plus and provides useful context on Ledger’s ecosystem.

Job Responsibility

Work with Security Engineering and Infrastructure / SRE and IT teams to strengthen Ledger’s network and access security model
Map and document application and admin flows (who/what/where) and propose Zero Trust patterns (per-app access, identity-aware gateways, strong auth)
Contribute to PoCs and integrations for ZTNA / SASE / secure access solutions (e.g. controlled access to cloud consoles, internal admin tools, and critical SaaS)
Help define and document reference architectures, diagrams, and runbooks for secure remote access and network security
Where relevant, contribute small scripts/tools (Python, shell, etc.) to automate validation, configuration checks, or data collection.

What we offer

Comprehensive compensation packages that include a wide range of benefits
Regionally specific benefits.

Fulltime

Load Balancer Admin

This role is essential for ensuring high availability, secure access, and optima...

Location

United States , Philadelphia

Salary:

Not provided

Ocean Blue Solutions

Expiration Date

Until further notice

Requirements

Deep understanding of TCP/IP, NAT, VLANs, firewalls, VPNs, and security policies
Proven experience with Layer 4 and Layer 7 load balancing
Hands-on expertise with Citrix NetScaler (CLI/NITRO API and GUI)
High availability and failover configuration skills
Advanced NetScaler Content Switching capabilities
SSL/TLS certificate management and authentication integration
Proficiency with tools like Wireshark and NetScalerConsole
Strong diagnostic skills for performance issues and system bottlenecks
Experience with log analysis and event monitoring
Analytical Problem-Solving: Skilled in resolving complex issues under pressure

Job Responsibility

Design and implement scalable load balancing solutions to support reliable application delivery
Configure and troubleshoot Layer 4 and Layer 7 load balancing policies for efficient traffic management
Install and configure Citrix NetScaler appliances or virtual instances, ensuring seamless integration into existing network architecture
Set up and maintain high availability (HA) and failover mechanisms, including active-passive and load-sharing configurations
Implement NetScaler Content Switching to optimize application routing and delivery
Manage SSL/TLS certificates and integrate authentication mechanisms to ensure secure connections
Monitor system performance using built-in tools and third-party applications (e.g., Wireshark, NetScalerConsole)
Identify and resolve complex issues related to configuration, connectivity, and performance
Analyze logs and events to proactively manage system health and prevent downtime
Develop and maintain comprehensive documentation and training materials for junior engineers and operations teams

Staff Security Engineer

Bloomreach is building the world’s premier agentic platform for personalization....

Location

Slovakia , Bratislava; Brno; Prague

Salary:

4000.00 EUR / Month

Bloomreach

Expiration Date

Until further notice

Requirements

6+ years of relevant experience
proficiency in cloud security, network security, URL filtering, common security frameworks, and CVE lifecycle management
practical IaC and scripting for automation
strong cross-functional and external communication
experience mentoring junior staff
Hands-on cloud security for AWS and GCP
SIEM ownership and detection engineering
Vulnerability and incident lifecycle ownership
Drive CVE lifecycle management and patching
Network, web, and endpoint protections

Job Responsibility

Owns current and target-state data architectures and reporting
designing, implementing, and monitoring cloud (AWS/GCP) infrastructure security controls
deploying, securing, configuring, and operating SIEM and other security resources
identifying, triaging, and remediating infrastructure and web vulnerabilities
leading incident triage and external-researcher engagement
mentoring junior staff

What we offer

Restricted stock units
Great deal of freedom and trust
Flexible working hours
Work virtual-first with several Bloomreach Hubs
Company events
5 paid days off to volunteer
People Development Program
Communication coach
Leader Development Program
$1,500 professional education budget

Fulltime

Jr. System Admin, Linux Engineer

The Jr. System Admin, Linux Engineer supports North American Aerospace Defense C...

Location

United States , Colorado Springs

Salary:

50000.00 - 63000.00 USD / Year

Trace3

Expiration Date

Until further notice

Requirements

0-3 years of experience
Minimum Secret Clearance (Active or active within past 24 months), TS preferred
Bachelor’s degree in related field preferred, or equivalent experience
DoD 8570 certification at IAT Level II or higher (Security+, GSEC, SCNP, SSCP, CISSP, CISA, GSE, SCNA) is required within 90 days of starting
U.S. Citizenship is required
Experience supporting capability development, delivery, and sustainment of Command and Control (C2) systems within an Agile environment supporting the missile warning, missile defense, and space domain awareness (SDA) domains is highly desired

Job Responsibility

Provide Systems Administration/Integration to support Linux environments
Administer/update/troubleshoot air warning, missile warning & space defense systems development/test environments
Implement system enhancements that will improve the performance and reliability of the system including installing, upgrading/patching, monitoring, problem resolution, and configuration management
Linux System Administrator responsible for the internal administration, maintenance, and management of capacity resources the integrated NISSC development environment at the Government Test Development Facility
Set up and manage Linux and Windows systems, applications and environments and ensuring those systems comply with government security standards
Builds, configures, troubleshoots, and integrates new and existing servers to provide service enhancements, application deployments and infrastructure upgrades
Sets up administrator and service accounts, maintains system documentation, tunes system performance, installs system-wide software, and allocates mass storage space
Troubleshooting network hardware and software applications, OS upgrades, and security systems to resolve operational issues and restore services
Responsible for monitoring performance, system usage, and back-up and recovery
Familiarity with storage appliances and configurations

What we offer

Comprehensive medical, dental and vision plans for you and your dependents
401(k) Retirement Plan with Employer Match, 529 College Savings Plan, Health Savings Account, Life Insurance, and Long-Term Disability
Competitive Compensation
Training and development programs
Major offices stocked with snacks and beverages
Collaborative and cool culture
Work-life balance and generous paid time off

Fulltime

New

Senior Cybersecurity Analyst – CMMC & DoD Compliance

The Cybersecurity Analyst will help lead the CMMC compliance efforts to enable p...

Location

United States , Austin, Texas; Warren, Michigan

Salary:

Not provided

General Motors

Expiration Date

Until further notice

Requirements

Bachelor’s degree in Cybersecurity, Information Systems, Computer Science, or equivalent practical experience
5+ years of cybersecurity experience in regulated or government‑contract environments
Experience supporting federally regulated cybersecurity requirements
Experience preparing for third‑party or government assessments
Ability to translate and communicate DoD cybersecurity requirements for application teams
Knowledge in the following areas: Identity & Access Management (IAM): RBAC, least privilege, privileged access workflows, MFA, service accounts, access reviews, joiner/mover/leaver processes
Windows & Linux security: GPO/Intune or equivalent, local admin controls, secure baselines (e.g., CIS-aligned), logging configuration, patch management, hardening validation
Network security: segmentation concepts, firewall rulesets, VPN/ZTNA, secure remote administration, network device logging, NAC fundamentals, DNS security basics
Endpoint security: EDR capabilities, alert triage/validation, policy enforcement, device encryption, removable media controls
Vulnerability management: scan coverage, risk-based prioritization, remediation workflows, exception handling, validation reporting

Job Responsibility

Drive the overall governance for government programs
Execute annual self-assessments (Continuous Monitoring) on CMMC/NIST controls and document findings
Coordinate internal teams (IAM, cloud, infrastructure, SOC, endpoint, vulnerability management, application owners) to validate control implementation and operational effectiveness
Identify compliance gaps, manage security exceptions (POA&Ms), and drive remediation prior to audit or customer assessments
Lead CMMC readiness and sustainment activities for GM Defense programs, aligned to NIST SP 800‑171 and DoD expectations for CUI protection
Build and maintain assessment‑ready evidence packages (policies, procedures, configurations, logs, tickets, reports) aligned to CMMC and DFARS requirements

What we offer

This job may be eligible for relocation benefits

Fulltime

Network Security Admin

Robert Half

Location:
United States , Johns Creek

Category:
IT - Administration

Contract Type:
Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Additional Information:

Job Posted:
March 21, 2026

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