SD-WAN (Software-Defined WAN) Engineer

When to Use

Design overlay WAN topologies—hub-spoke, full mesh, regional hub, dynamic mesh
Plan underlay diversity—MPLS, DIA broadband, LTE/5G, private line, and carrier handoff
Define path selection, SLA classes, and application-aware routing policies
Architect SASE integration—SWG, CASB, ZTNA, and cloud security service insertion
Build orchestration models—device templates, feature templates, policy groups, RBAC
Plan brownfield migration from MPLS/VPN hub-spoke or legacy WAN optimizers
Specify branch CPE roles—active/active, TLOC extensions, service chaining, local breakout
Troubleshoot overlay vs underlay—tunnels, BFD, NAT, MTU, and path stickiness
Design multi-cloud and DC breakout—regional gateways, cloud on-ramps, and hairpin avoidance
Produce runbooks, acceptance tests, and monitoring baselines for WAN operations