Senior Network Engineer V

Rackspace is seeking a highly experienced Senior Network Engineer with deep expertise in Cisco ACI, F5 technologies, enterprise WAN/LAN design, and advanced automation. This role focuses on designing, building, and optimizing large-scale enterprise and data center networks while driving operational excellence and technology standardization.

Responsibilities:

• Lead design, configuration, and support of Cisco ACI Data Center Infrastructure, including Multisite and NDO
• Manage F5 BIGIP technologies (LTM, GTM, remote access, traffic management, application delivery)
• Architect and implement WAN/LAN, including routing, SDWAN, and SDAccess
• Develop and maintain automation and monitoring scripts
• Define and deliver network design requirements for enterprise and data center connectivity
• Collaborate with vendors to evaluate, select, and coordinate testing and deployment of new and existing hardware/software
• Develop detailed maintenance plans, including documentation and change management activities
• Perform hardware and software upgrades across enterprise and data center environments
• Script and test change plans for upgrades and configurations
• Serve as lead or supporting engineer during change implementations
• Develop or adhere to SOPs (Standard Operating Procedures) and MOPs (Methods of Procedure)
• Drive network standardization efforts across the enterprise
• Document specialized network designs for internal training and knowledge sharing
• Present and train internal teams on new network topologies, hardware, and emerging technologies
• Lead Root Cause Analysis (RCA) sessions and implement corrective actions
• Define baseline network requirements and ensure compliance
• Perform code analysis, IOS testing, and provide software recommendations
• Build network lab mockups for scenario and error testing
• Automate repetitive engineering tasks

Requirements:

• High School Diploma or regional equivalent required
• A minimum of 12–14 years of recent experience in network design, LAN/WAN buildouts, or large-scale network modernization
• Expert-level experience with Cisco ACI, including Multisite and NDO
• Extensive hands-on experience across technologies such as: MPLS, BGP, LDP, QoS, IPv6, OSPF, vPC, STP, DWDM, EVPN, L2VPN, MPLS VPN/L3VPN, FHRP, VLAN, CDP, PortChannels, ISIS, MPLS InterAS, VXLAN, DNS, ACLs, RADb, Flowspec, RTBH, GitHub, APIs, NFV, Hypervisors, Virtual Switching
• Multivendor experience with Cisco IOS, ASR 1k (IOSXE), ASR NCS (IOSXR), and Nexus (NXOS)
• Experience in service provider, hosting/datacenter, or large-scale enterprise environments
• Proven ability to research, evaluate, and recommend network hardware/software solutions
• Experience working with third-party networking vendors and their product portfolios
• Required: CCNA
• Strong written and verbal communication skills; ability to explain technical concepts to nontechnical audiences
• Customer service–focused mindset
• Experience with monitoring tools such as: Arbor, Zenoss, Syslog, SolarWinds, Splunk, Kibana, WhatsUp Gold, etc
• Able to identify process inefficiencies and recommend improvements
• Bachelor's Degree in Computer Science, Network Engineering, or related field preferred
• CCDA, CCNP, CCDP
• Python certification (PCEP) is a plus