Austin, Texas · Network Infrastructure Portfolio

Shuaib Ahmed

CCNA, Security+, and Fortinet NSE 4 certified Network Technician / NOC Analyst with hands-on field troubleshooting experience, documented Cisco labs, and a growing FortiGate security focus.

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CCNASecurity+NSE 4Azure FundamentalsCisco IOSFortiGate LabsPython

Operational signal

Field troubleshooting backed by technical depth.

My portfolio connects real on-site infrastructure work with documented lab validation: physical-layer inspection, endpoint troubleshooting, network troubleshooting, routing concepts, and secure device management.

10+On-site Field Nation contracts
L1–L3Connectivity troubleshooting scope
300+Thin clients coordinated in deployment work
4Employer-facing lab reports included

Field Nation · Independent Network Technician

Infrastructure support across retail, healthcare, and banking environments

  • Diagnosed router power issues during a deployment window and recommended corrective action to reduce outage risk.
  • Restored VoIP call flow by identifying the correct switch port through MAC-address verification.
  • Resolved network-printing and endpoint-connectivity issues under active operational conditions.
  • Coordinated a multi-technician deployment of more than 300 thin clients.

Technical focus

Networking fundamentals with a security-infrastructure trajectory

Core strengths include TCP/IP, VLANs, 802.1Q trunking, STP/RSTP, EtherChannel, NAT/PAT, DHCP, DNS, ARP, ICMP, static routing, OSPF, Cisco IOS, FortiGate policy concepts, Windows troubleshooting, packet analysis, and structured documentation.

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Selected field evidence

Infrastructure work in the real world.

A gallery of field-support work: rack environments, hardware deployment, printer troubleshooting, structured cabling, termination, and physical-layer inspection. Click an image to enlarge it.

Verified foundation

Certifications

Current credentials supporting network-infrastructure and security-oriented roles.

Microsoft Certified: Azure Fundamentals

Microsoft · Foundational cloud concepts and Azure services

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Fortinet NSE 4 - FortiOS 7.6 Administrator

Fortinet · Pass validated June 18, 2026

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Documented engineering work

Network labs

Each lab is written as an employer-facing technical report: objective, topology, configuration choices, verification evidence, and practical interpretation.

ARP lab topology

Physical lab · Packet analysis

ARP, Ping, and Encapsulation

A first-principles analysis of same-subnet communication, ARP request and reply behavior, Ethernet framing, and how routers interpret raw packet fields.

ARPICMPWiresharkEthernet
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Cisco SSH lab logical topology

Physical lab · Secure management

Cisco SSH Management Bring-Up

Device recovery, management-IP planning, secure remote-access configuration, and troubleshooting of an IP-conflict condition that redirected SSH traffic.

SSHCisco IOSManagement PlaneTroubleshooting
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Rapid PVST plus planned topology

CML lab · Campus design

Rapid PVST+ in a Looped Topology

A four-switch campus block demonstrating root-bridge election, forwarding and alternate roles, blocked paths, and convergence after active-uplink loss.

Rapid PVST+802.1QCampusConvergence
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Active Directory Users and Computers showing Forti Guests group membership

VMware lab · Identity infrastructure

Active Directory Secure-Channel and DNS Troubleshooting

A Windows 11 domain-client recovery case separating Layer 3 reachability from DNS-driven AD discovery, stale machine-account state, and token validation.

Active DirectoryDNSSecure ChannelWindows 11
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Software project

TopoDrawer

Rapid topology sketching for network reasoning

A Python-based topology-drawing tool designed for fast keyboard-driven diagrams. The project supports rapid visualization of routers, switches, links, node movement, selection, pan, zoom, and connected-node navigation.

  • Built in Python with an emphasis on speed and operator control.
  • Useful for visualizing network designs before configuration begins.
  • Designed as a foundation for AI-assisted topology generation and future lab automation.
View TopoDrawer on GitHub

TopoDrawer walkthrough

Draw → Structure → Validate

Watch TopoDrawer scale from a minimal network sketch into a larger structured topology.

Contact

Open to network support, NOC, infrastructure, and junior network-security roles.

Based in Austin, Texas. Available for on-site and hybrid opportunities.

Email ShuaibLinkedInGitHubResume