Senior Engineer, Network and Systems

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Full Time Professional Westlake, TX, US

2 days ago Requisition

Salary Range: $ To $ Annually

Position Purpose

The Senior Systems and Network Engineer provisions, operates, and secures the Company’s core infrastructure, with primary focus on Linux servers, VMware virtualization, and storage. Because the Company has no separate network team, this position also owns the data center and corporate network, including the routers, switches, and firewalls that provide routing, VPNs, and perimeter security. The position is based in Dallas and supports the Company’s two Dallas‑area offices and its Dallas and Denver data centers, remotely managing Denver and assisting the onsite Denver counterpart with major projects as needed.

In addition to day‑to‑day operations, the position monitors and evaluates systems and procedures to protect the Company from unauthorized access, recommends and implements improvements to security, reliability, and utilization, and helps ensure compliance with software licensing, network, and systems legal requirements.

• Deploy, maintain and support core IT infrastructure, including Linux servers, VMware vSphere, physical server and storage hardware, and file, email (Postfix), application and DNS servers
• Administer Net App storage and storage protocols (iSCSI, Fibre Channel, NFS, SMB/CIFS), including provisioning, capacity planning and performance monitoring
• Manage physical server hardware primarily through out‑of‑band tools (Dell iDRAC/HP iLO), including remote provisioning, firmware lifecycle management and hardware health monitoring
• Perform hands, on data center work in the Dallas data center as needed for installations and projects
• Maintain, patch and upgrade server and network operating systems and applications
• Monitor infrastructure health and performance and respond to alerts.
• Design, implement and maintain the Company’s data center and corporate LAN/WAN infrastructure, including switching, routing, firewalls, IPSec VPN tunnels, dynamic routing protocols (including BGP on servers such as load balancers) and perimeter security
• Deploy, maintain and support routers, switches and firewalls
• Administer load balancing services (HAProxy)
• Maintain responsibility for VPN gateways and intrusion detection system
• Manage network authentication, authorization and directory services, including RADIUS, TACACS+ and LDAP systems
• Support the Active Directory‑based security model, which acts as the root authority for most authenticated applications, by integrating Linux systems and services with it (LDAP, Kerberos, SSSD)
• Manage certificate and PKI lifecycle
• Configure and support the email authentication framework (SPF, DKIM, DMARC)

Security & Risk Management

• Develop and deploy IT infrastructure hardening standards, and help shape the Company’s IT security and infrastructure standards
• Troubleshoot and identify possible security threats; anticipate hardware and software degradation issues
• Secure business applications to reduce risk; abide by third party established regulations where applicable
• Help ensure compliance with software licensing, network and systems legal requirements

Backup & Disaster Recovery

• Implement and maintain backup and disaster recovery systems across the Dallas and Denver data centers

Automation

• Automate provisioning, configuration and routine operational tasks through scripting and configuration management
• Develop and deploy IT infrastructure hardening standards, and help shape the Company’s IT security and infrastructure standards
• Troubleshoot and identify possible security threats; anticipate…