🔀 Routing & Switching
Production-ready LAN/WAN design with disciplined segmentation, dynamic routing and predictable failover.
Network operations / available for infrastructure work
Alex Mercer / 2026
01 - Infrastructure, made visible
Route the
signal.
Network engineer focused on resilient infrastructure, secure connectivity and calm incident response. I turn complex topology into dependable paths people can trust.
02 / Profile
Topology is
a language.
I design, operate and troubleshoot enterprise networks across routing, switching, firewalls, wireless and hybrid connectivity. My working style is methodical: map the path, isolate the fault, make the smallest safe change, then prove the result.
99.98%Network availability
42Sites supported
18Critical incidents resolved
03 / Network stack
Built around
the packet.
🛡️ Security Edge
Policy-driven perimeter architecture with firewall rules, VPN connectivity, access control and zero-trust thinking.
📊 Observability
Monitoring and telemetry that make latency, loss, saturation and abnormal traffic visible before users feel them.
☁️ Cloud Connectivity
Hybrid network patterns connecting on-prem environments with cloud workloads without losing operational clarity.
04 / Experience
Reliable paths,
under pressure.
Senior Network Engineer · Northstar Systems
Own core routing, security edge and WAN reliability for a distributed enterprise. Lead change windows, incident reviews and network modernization.
Network Engineer · Meridian Cloud
Designed branch connectivity, automated configuration checks and improved observability across hybrid infrastructure.
Network Operations Analyst · VectorLink
Triaged production incidents, maintained monitoring, documented topology and partnered with systems teams on service restoration.
05 / Selected systems
Three paths
worth tracing.
CASE 01 / WAN RESILIENCE
Redesigned a 42-site WAN for cleaner failover.
Reworked routing boundaries and link failover logic, reducing mean recovery time while giving operations a clearer topology model for troubleshooting.
Core Refresh
Modernized campus switching with redundant distribution, structured VLAN boundaries and staged migration runbooks.
Signal Watch
Created a network observability layer combining telemetry, event correlation and actionable alert thresholds.
06 / Credentials
Proof in the
protocols.
🏆 CCNP Enterprise
Advanced routing, switching and enterprise infrastructure design.
🔒 Fortinet NSE 4
Firewall operations, policy architecture and secure network connectivity.
☁️ AWS Advanced Networking
Hybrid connectivity and cloud-scale network architecture.
✅ ITIL Foundation
Service management practices for controlled, measurable operations.
07 / Contact