at CF Industries in Northbrook, Illinois, United States
Job Description
Sr. Network Administrator to provide technical expertise in the management of a public and/or private IT network; test and analyze network facilities, including network control software, routers, switches, lines, modems, adapters, and servers. Install, support and/or maintain LANs and/or WANs; evaluate and recommend networking product and software upgrades. Perform technical analyses of software, hardware and transmission facilities using diagnostic tools including Wireshark and/or Traceroute in support of efficient network operations. Monitor data traffic and controls network resource performance to ensure high-quality transmission. Identify, diagnose, and resolve technical problems related to network failure/ integrity and usage of PC hardware and software.
- Design and troubleshoot site level network equipment to maximize performance, security, and reliability (including firewalls, routers, switches, wireless access points, controllers, and vendor appliances) within cloud network architecture.
- Oversee projects with minimal supervision and guidance.
- Design processes, policies, and procedures supporting internal controls, cybersecurity, and data protection of sensitive data. This includes IT General Controls (ITGCs); Managed Access (MA-xx); Managed Operations (MO-xx); and Change Management (CM-xx); Sarbanes Oxley/SOx; Data backup, recovery, and classification; Information Technology Asset Management (ITAM).
- Apply experience configuring Cisco ASA firewalls, Cisco FTD firewalls, and Cisco IOS routers.
- Apply experience deploying firewall access control rules using Cisco Firepower.
- Apply experience defining network routing using the Cisco Adaptive Security Device Manager (ASDM).
- Design and troubleshoot IT infrastructure using aforementioned software and diagnostic tools to mitigate risk and define new controls to ensure mitigation of risk.
- Define site level software-defined wide area network (SD-WAN) and related infrastructure.
- Design IT network configurations with Microsoft Visio.
- Troubleshoot network access control rules of cloud networks (including Microsoft Azure) and on-premises and hybrid environments.
- Lead initiatives to improve Intrusion Detection and Prevent Systems (IDS/IPS).
- Understand and comply with established processes and procedures designed to support internal controls efforts, including Change Control procedures across all modifications to the environment. Identify to management internal controls deficiencies.
