Network Design Engineer

Job Description

Senior Network Design Engineer to support the design and delivery of large-scale enterprise network infrastructure for AT&T. Focused on data center and enterprise network architecture, working closely with implementation teams and stakeholders to deliver scalable, resilient, and well-documented designs. The ideal candidate brings deep experience designing and implementing large data centers, data center migrations, and large-scale LAN/WAN environments, with the ability to clearly articulate design principles, trade-offs, and architectural decisions. This is a hands-on role requiring both deep technical expertise and strong communication skills. Long-term contract engagement, fully remote, US Eastern or Central time zone alignment.

Requirements

• 10+ years of hands-on experience in enterprise network engineering with a focus on design
• Proven experience designing and implementing large-scale data centers
• Experience leading data center migrations
• Experience designing enterprise LAN/WAN networks for large, distributed environments
• Strong expertise in VXLAN / EVPN fabric design and spine-leaf architectures
• Strong experience with Arista EOS; exposure to CloudVision Portal (CVP) preferred
• Experience working in complex, multi-vendor enterprise environments (Arista, Cisco)
• Ability to clearly explain design principles, architecture decisions, and trade-offs
• Strong design documentation and stakeholder communication skills
• CCIE certification (Data Center or R&S) or equivalent expert-level certification preferred
• US Citizen or Green Card holder
• Available to work US Eastern or Central time zones

Responsibilities

• Design and validate large-scale data center network architectures, including VXLAN-based spine-leaf fabrics (EVPN)
• Develop High-Level Designs (HLDs) and Low-Level Designs (LLDs) aligned with enterprise standards
• Lead or contribute to data center build-outs, technology refreshes, and migration initiatives
• Design and support enterprise LAN/WAN architectures for large, distributed environments
• Prepare detailed Bills of Materials (BOMs) and implementation guidelines
• Review and validate designs through technical discussions and design reviews
• Translate business and functional requirements into robust technical designs
• Collaborate with implementation engineers, operations teams, vendors, and architects
• Provide technical guidance during implementation and migration phases
• Maintain clear and thorough design documentation and technical artifacts

Technologies & Skills

Benefits

• Competitive contract rate
• Long-term project engagement
• Fully remote
• US business hours (EST/CST)
• Direct collaboration with enterprise architecture team