Network & Infrastructure Engineer

WIA Systems Inc. is a global professional services company founded in 2016 and headquartered in Texas. Specializing in Enterprise Resource Planning (ERP), the company provides a range of services including consulting, implementation, training, 24x7 support, and staff augmentation. Their certified implementation team focuses on IFS ERP and employs agile project management methodologies for quality results. WIA Systems has dedicated customer support and application hosting services to assist clients in achieving their business objectives. With a presence in markets across the USA, Canada, UK, and Sri Lanka, WIA Systems is positioned as a comprehensive ERP solutions provider.

The Network & Infrastructure Engineer is responsible for designing, implementing, securing, and supporting enterprise networking across on-premises and Microsoft Azure environments using Zero Trust principles.

This hands-on role manages secure connectivity, network access controls, firewalls, remote access, on-premises servers, storage, and backup services. The role ensures reliable performance, limits unauthorized access and maintains tested recovery capabilities for critical business systems.

Key Responsibilities

Enterprise Networking

• Design, configure, and maintain on-premises and Azure network infrastructure, including LAN, WAN, wireless, routing, switching, DNS, and DHCP.
• Manage Azure virtual networks, subnets, routing, network security groups, private endpoints, and hybrid connectivity.
• Troubleshoot connectivity issues and maintain network diagrams, configurations, and operating procedures.
• Hands-on experience configuring, administering, and troubleshooting Fortinet FortiGate firewalls and security services, including firewall policies, VPNs, intrusion prevention, web filtering, application control, and threat protection.
  

Zero Trust Network Access & Segmentation

• Implement and support Zero Trust Network Access (ZTNA) for secure access to business applications and infrastructure.
• Apply least privilege access based on user identity, device compliance, and approved business requirements.
• Implement network segmentation to isolate sensitive systems and reduce lateral movement.
• Regularly review access rules and remove unnecessary or outdated permissions.
• Coordinate with identity, endpoint, and security teams to maintain consistent access policies.

Firewall Management & Secure Remote Access

• Configure, maintain, and troubleshoot firewalls, security policies, VPNs, and secure remote access services.
• Review firewall rules, network traffic, and configuration changes to identify security gaps.
• Maintain firewall firmware and configuration backups and validate changes through established change management procedures.
• Support investigation and containment of network-related security incidents.

Network Monitoring & Performance

• Monitor network availability, utilization, latency, and service health.
• Investigate alerts, resolve incidents, and perform root cause analysis for recurring issues.
• Plan capacity improvements and implement measures to improve performance and resilience.
• Coordinate with internet providers, vendors, and support partners to resolve service disruptions.

On-Premises Server Infrastructure

• Administer physical servers, virtualization platforms, and Windows and/or Linux server environments.
• Perform provisioning, patching, hardening, lifecycle maintenance, and capacity management.
• Maintain server availability and coordinate maintenance to minimize business disruption.
• Manage administrative access in accordance with approved security standards.

Storage & Backup

• Administer storage platforms, monitor capacity and health, and manage storage access permissions.
• Configure and monitor backup jobs, retention policies, and protected copies appropriate to business requirements.
• Investigate backup failures and verify that critical systems and data remain recoverable.
• Maintain backup documentation and protect backup infrastructure from unauthorized access.

Disaster Recovery & Restore Testing

• Maintain recovery procedures for networking, on-premises servers, storage, and backup services.
• Execute scheduled restore and disaster recovery tests with relevant service owners.
• Validate recovery against agreed recovery time objectives (RTOs) and recovery point objectives (RPOs).
• Document test results, track corrective actions, and support recovery during outages or incidents.

Operational Ownership & Collaboration

• Own assigned incidents, service requests, problems, and changes through resolution.
• Maintain accurate infrastructure inventories, technical documentation, and support runbooks.
• Collaborate with IT Service Management, Infrastructure, Platforms & Security Operations, and Enterprise Architecture & Innovation.
• Identify opportunities to automate routine work and improve security, reliability, and operational efficiency.
• Participate in scheduled maintenance and on-call support as required.

• Hands-on experience configuring, administering, and troubleshooting Fortinet FortiGate firewalls and security services, including firewall policies, VPNs, intrusion prevention, web filtering, application control, and threat protection.
• Bachelor’s degree in information technology, computer science, networking, or equivalent practical experience.
• 5+ years of hands on experience in Network administration and IT infrastructure
• Demonstrated experience supporting enterprise networks and on-premises infrastructure.
• Hands-on experience with Azure networking and hybrid connectivity.
• Strong knowledge of TCP/IP, routing, switching, VLANs, DNS, DHCP, firewalls, and VPNs.
• Practical understanding of Zero Trust principles, ZTNA, network segmentation, and least-privilege access.
• Experience administering server virtualization, storage, backup, and recovery technologies.
• Ability to troubleshoot complex issues, manage priorities, and communicate clearly with technical and business teams.
• Experience following incident, problems and changing management processes.
• Relevant networking, Azure, security, or infrastructure certifications, such as CCNA, CCNP, or Microsoft Azure Network Engineer Associate.
• Experience with identity-based access controls and device compliance integrations.
• Familiarity with PowerShell, infrastructure automation, and configuration management.
• Experience supporting disaster recovery exercises and maintaining recovery runbooks.