Network and Security Administrator
ORIX METRO Leasing and Finance Corporation
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Job summary
ORIX METRO Leasing and Finance Corporation seeks a Network and Security Administrator to oversee the organization’s network and security infrastructure. You will configure, monitor, and harden systems, manage access, and coordinate vulnerability remediation across on-prem and cloud environments.
The role serves as an advanced escalation point for complex issues and supports governance, risk, and compliance activities through audits and security assessments.
Qualifications
- Bachelor’s degree in IT, CS, Engineering or related field.
- 5+ years in network and security administration in enterprise environments.
- Experience with routing/switching, firewall, VPN, SD-WAN, SASE/SSE, wireless.
- Experience in security hardening and vulnerability remediation.
- Knowledge of network monitoring, troubleshooting and root-cause analysis.
- Familiarity with Change/Configuration Management and ITSM.
- Experience supporting ISO 27001 / BSP compliance.
- Vendor and stakeholder management experience.
- Preferred: Fortinet NSE 4 / FCP, Cisco CCNA/CCNP; Security+ or similar.
Responsibilities
- Administers, configures, maintains, and monitors network infrastructure and security controls.
- Implements and maintains security technologies across network, server, endpoint, cloud, and apps.
- Performs security hardening, access control, and vulnerability remediation.
- Reviews firewall rules, VPN policies, segmentation, privileged access, and secure connectivity.
- Monitors security events, incidents, vulnerabilities, and coordinates remediation.
- Supports audits, risk assessments, and compliance activities.
- Assesses performance gaps and recommends improvements for reliability and security.
- Provides escalation support and guidance to IT teams and vendors.
- Participates in technology evaluations, roadmaps, and continuous improvement.
Skills
Education
Tools
Job description
The Network and Security Administrator is responsible for the effective administration, security, stability, availability, performance, and continuous improvement of the organization's network and technology security infrastructure. The role performs network administration and security administration activities, including configuration, monitoring, troubleshooting, access management, security hardening, vulnerability remediation, and implementation of applicable security controls across network, server, endpoint, application, cloud, and other technology environments, in accordance with approved IT and Information Security Governance requirements. The role serves as an advanced technical escalation point for network and security-related incidents beyond the scope of Technical Support Engineers and provides technical expertise for infrastructure and security initiatives, ensuring secure access, reliable connectivity, resilient technology services, and continual improvement of the organization's technology environment.
Administers, configures, maintains, and monitors network infrastructure, including routers, switches, firewalls, wireless infrastructure, VPN, SD-WAN, SASE/SSE, and related technologies.
Ensures network stability, availability, performance, capacity, resilience, and uptime across offices, branches, data centers, cloud environments, and remote users.
Performs network configuration, troubleshooting, optimization, preventive maintenance, and root-cause analysis of network-related incidents.
Monitors network performance, connectivity, bandwidth utilization, and capacity and recommends appropriate corrective or preventive actions.
Maintains network topology, configurations, IP addressing, device inventories, configuration baselines, and technical documentation.
Supports network redundancy, failover, disaster recovery, and business continuity requirements.
Implements, configures, maintains, and monitors applicable security controls and security technologies in accordance with Information Security Governance, IT policies, standards, procedures, and control requirements.
Administers security controls covering network, server, endpoint, application, cloud, access, and other technology environments, as assigned.
Performs security configuration, hardening, access control, vulnerability remediation, and security-related maintenance activities.
Reviews and maintains firewall rules, VPN policies, network segmentation, privileged access, secure connectivity, and other applicable security configurations.
Monitors security events, security-related incidents, vulnerabilities, and control exceptions and coordinates appropriate investigation and remediation.
Supports security assessments, access reviews, vulnerability management, audits, and other security assurance activities.
Assesses network and technology security environments to identify performance gaps, security risks, vulnerabilities, capacity constraints, and improvement opportunities.
Recommends and implements enhancements to improve network reliability, security, resilience, scalability, and operational efficiency.
Provides technical recommendations for network modernization, SD-WAN, SASE/SSE, network segmentation, secure remote access, cloud connectivity, security hardening, and other technology enhancements.
Participates in technology evaluations, proof-of-concepts, infrastructure planning, security initiatives, and technology roadmaps.
Serves as the advanced technical escalation point for network and security issues beyond the scope of Technical Support Engineers.
Diagnoses and resolves complex network, connectivity, infrastructure, access, configuration, and security-related incidents.
Provides technical guidance, knowledge transfer, and troubleshooting support to Technical Support Engineers and other IT teams.
Coordinates with vendors and service providers in resolving complex network and security issues.
Identifies recurring issues and implements appropriate corrective and preventive solutions.
Ensures network and security administration activities comply with applicable Information Security Governance, IT policies, standards, procedures, approval requirements, and internal controls.
Identifies and escalates network and security risks, control gaps, vulnerabilities, exceptions, and operational concerns through appropriate channels.
Supports IT audit, risk assessment, security assessment, regulatory, and compliance activities relevant to network and technology security.
Ensures network and security changes are appropriately assessed, approved, documented, tested, and implemented.
Administers, configures, maintains, and monitors network infrastructure, including routers, switches, firewalls, wireless infrastructure, VPN, SD-WAN, SASE/SSE, and related technologies.
Ensures network stability, availability, performance, capacity, resilience, and uptime across offices, branches, data centers, cloud environments, and remote users.
Performs network configuration, troubleshooting, optimization, preventive maintenance, and root-cause analysis of network-related incidents.
Monitors network performance, connectivity, bandwidth utilization, and capacity and recommends appropriate corrective or preventive actions.
Maintains network topology, configurations, IP addressing, device inventories, configuration baselines, and technical documentation.
Supports network redundancy, failover, disaster recovery, and business continuity requirements.
Implements, configures, maintains, and monitors applicable security controls and security technologies in accordance with Information Security Governance, IT policies, standards, procedures, and control requirements.
Administers security controls covering network, server, endpoint, application, cloud, access, and other technology environments, as assigned.
Performs security configuration, hardening, access control, vulnerability remediation, and security-related maintenance activities.
Reviews and maintains firewall rules, VPN policies, network segmentation, privileged access, secure connectivity, and other applicable security configurations.
Monitors security events, security-related incidents, vulnerabilities, and control exceptions and coordinates appropriate investigation and remediation.
Supports security assessments, access reviews, vulnerability management, audits, and other security assurance activities.
Assesses network and technology security environments to identify performance gaps, security risks, vulnerabilities, capacity constraints, and improvement opportunities.
Recommends and implements enhancements to improve network reliability, security, resilience, scalability, and operational efficiency.
Provides technical recommendations for network modernization, SD-WAN, SASE/SSE, network segmentation, secure remote access, cloud connectivity, security hardening, and other technology enhancements.
Participates in technology evaluations, proof-of-concepts, infrastructure planning, security initiatives, and technology roadmaps.
Serves as the advanced technical escalation point for network and security issues beyond the scope of Technical Support Engineers.
Diagnoses and resolves complex network, connectivity, infrastructure, access, configuration, and security-related incidents.
Provides technical guidance, knowledge transfer, and troubleshooting support to Technical Support Engineers and other IT teams.
Coordinates with vendors and service providers in resolving complex network and security issues.
Identifies recurring issues and implements appropriate corrective and preventive solutions.
Ensures network and security administration activities comply with applicable Information Security Governance, IT policies, standards, procedures, approval requirements, and internal controls.
Identifies and escalates network and security risks, control gaps, vulnerabilities, exceptions, and operational concerns through appropriate channels.
Supports IT audit, risk assessment, security assessment, regulatory, and compliance activities relevant to network and technology security.
Ensures network and security changes are appropriately assessed, approved, documented, tested, and implemented.
Provides technical expertise for network, infrastructure, cybersecurity, and technology projects from design and implementation through transition to operations.
Coordinates with vendors and service providers to ensure required network and security services, support, and technical deliverables are provided.
Monitors network and security performance and recommends process, technology, and automation improvements.
Maintains appropriate technical documentation, configurations, security evidence, operating procedures, and other required records.
Performs other functions as may be required by the Department Head or Division Head from time to time.
Bachelor's degree in Information Technology, Computer Science, Computer/Electronics Engineering, or related field
At least 5 years in network and security administration in an enterprise, multi-site (office/branch/data center) environment
Routing/switching, firewall, VPN, SD-WAN, SASE/SSE and wireless administration
Security hardening, access control and vulnerability remediation
Network monitoring, troubleshooting and root-cause analysis
Change/configuration management and ITSM
ISO 27001/BSP compliance support
Vendor and stakeholder management
Preferred: Fortinet NSE 4/FCP, Cisco CCNA/CCNP; security certification (e.g., Security+)
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