Network Engineer

Network EngineerLocation: Chicago OR HoustonDuration: 12 MonthsUnited Airlines - ChicagoRole and ResponsibilitiesThe client is seeking a highly skilled and experienced Senior LAN (Local Area Network) / WAN (Wide Area Network) Engineer. The candidate will be responsible for the design, documentation and implementation, and engineering maintenance of networks within our organization. Specific focus will be on network segmentation and Operations Technology (OT), ensuring that use of selected technology supports all current and future business practices. This role will work closely with multiple stakeholders within United to ensure our networks are secure and compliant with our security policies and any applicable regulations. This hybrid position will be a part of the United Network Engineering team based out of Houston or Chicago.Key Responsibilities:• Plan, design, and implement network infrastructure to meet business requirements, considering scalability, security, segmentation, and performance. This includes network equipment selection, network topology design, IP addressing, VLAN configuration, and network segmentation. In depth experience and proficiency with Aruba ClearPass, Cisco SDWAN is required.• Participate in project planning and implementation to ensure that our network segmentation solutions for vendor networks are integrated seamlessly into our network infrastructure.• Implement and enforce security measures to protect the network infrastructure from unauthorized access, intrusions, and data breaches. This includes implementing firewalls, access control lists (ACLs), VPNs (Virtual Private Networks), and network segmentation. Monitor network traffic for security threats and perform periodic security audits.• Monitor network performance and availability using network monitoring tools. Proactively identify and resolve network-related issues, such as network congestion, packet loss, latency, and connectivity problems. Troubleshoot network infrastructure, network devices, and collaborate with other teams to resolve complex network issues.• Maintain accurate documentation of network infrastructure, including network diagrams, configurations, and standard operating procedures. Prepare reports on network performance, incidents, and trends. Provide recommendations for network improvements and optimization.• Participate in strategy definition and execution for enterprise network segmentation to address high risk environments such as public facing applications.• Collaborate with other IT teams and stakeholders to understand network requirements and provide technical support. Assist with network-related projects, such as network expansions, upgrades, and migrations. Provide guidance and support to junior network engineers and technicians.Preferred Qualifications:• Bachelor's degree in Computer Science, Information Technology, or a related field. Relevant certifications (e.g., CCNA, CCNP, CompTIA Network+) are a plus• Minimum 7-10 years of experience with a proven experience as a network Engineering or similar role, with a strong understanding of network technologies, protocols, and architectures• Extensive experience and very good understanding of Aruba ClearPass Policy Manager (CPPM), wired/wireless NAC, 802.1x, TACACS+, RADIUS, & ACLs• Comprehensive experience in network engineering utilizing Cisco, and HP/Aruba Networking Technologies• Knowledgeable and experience with segmentation• In-depth knowledge of network equipment, including Cisco Catalyst (45XX,65XX and 9XXX series) & Aruba CX network switching solutions, routers, firewalls, and wireless controllers• Proficiency in network protocols and technologies, such as TCP/IP, DNS, DHCP, VLANs, VPNs, and routing protocols (e.g., OSPF, BGP)• Experience with network debugging tools (Wireshark and packet capture analysis), monitoring tools (e.g., SolarWinds, Nagios) and network security tools (e.g., IDS/IPS, SIEM)• Strong troubleshooting and analytical skills to diagnose and resolve complex network issues• Excellent communication and collaboration skills to work effectively with cross-functional teams and stakeholders• Ability to prioritize tasks, manage multiple projects simultaneously, and meet deadlines• Strong attention to detail and documentation skills. Large focus on documentation and communication skills providing in depth design and related documentation• Demonstrated ability to manage multiple projects simultaneously, prioritize tasks, and meet deadlines.• A resourceful person that is a fast learner and asks when in doubt• Naturally organized with determination to deliver excellence• Experience working in a fast-paced environment with changing priorities.• Experience with Cisco/Viptela SDWAN• Strong programming and automation platform proficiency: Python, Terraform, Ansible, etc.