Networking
Designing and maintaining the connections that keep organisations online
Overview
Networking covers the roles responsible for designing, building, maintaining, and securing the network infrastructure that connects users, devices, applications, and services. Without functioning networks, no digital product, cloud service, or internal system can operate. Network professionals are the engineers who ensure that connectivity is reliable, performant, and secure across on-premise, cloud, and hybrid environments.
The discipline spans several distinct areas. Network Engineers and Administrators configure and maintain LAN, WAN, and data centre networks. Network Architects design the high-level structure of enterprise connectivity. Network Security Engineers secure traffic and defend perimeters. VoIP and Wireless specialists focus on specific transmission technologies. The category has evolved significantly with cloud adoption — most network practitioners now work across physical infrastructure and software-defined networking (SDN), and cloud networking skills are increasingly expected alongside traditional Cisco and Juniper credentials.
Roles in this Category
7 roles
Skills
Hard Skills
- Network Architecture
- Troubleshooting and Diagnostics
- Routing and Switching
- Capacity Planning
- Network Configuration
- Wireless Network Protocols
- Network Monitoring
- Radio Frequency Engineering
- Network Security
Soft Skills
- Attention to DetailSmall misconfigurations propagate to outages at network scale
- CollaborationNetworks span infrastructure, security, and application teams
- Problem SolvingDiagnosing connectivity issues across many layers and hops
- Methodical ApproachSystematic fault isolation across complex topologies
- Analytical RigourSeparating root cause from symptom in distributed failures
- Analytical ThinkingReasoning about latency, throughput, and reliability under load
Tools & Software
Core Themes
- Configuring and maintaining routers, switches, firewalls, and network hardware
- Designing LAN, WAN, and data centre network architectures
- Monitoring network performance, availability, and capacity
- Troubleshooting connectivity failures and performance degradation
- Securing network traffic using firewalls, VPNs, IDS/IPS, and access controls
- Implementing software-defined networking and cloud network services
- Supporting infrastructure teams on network requirements for new systems and services
Typical Entry Points
CompTIA Network+ is the most widely recognised entry credential. Cisco CCNA is the standard junior network engineer certification and is frequently listed as a minimum requirement for practitioner roles. Most practitioners enter through IT support or junior infrastructure roles and develop networking specialisation through on-the-job experience and certifications. Home lab environments using GNS3 or Cisco Packet Tracer are a common and effective self-study route.
Who This Category Is For
- People who enjoy understanding how systems communicate and diagnosing why they fail to do so
- Those who prefer infrastructure and connectivity work over application or product development
- People who want clear certification pathways — Cisco, CompTIA, and Juniper credentials are widely respected
- Those comfortable with on-call responsibility and managing live network incidents
- Career progressors from IT support or systems administration backgrounds
- People who want to develop skills in an area that remains in consistent demand across every sector
- Those interested in network security or cloud networking as longer-term specialisations
- People who enjoy methodical, structured problem solving over creative or ambiguous work
Related Categories
Recommended Reading
Cloud Native Data Center Networking — Dinesh G. Dutt
TCP/IP Illustrated, Volume 1 — W. Richard Stevens & Kevin Fall
Network Programmability and Automation — Edelman, Lowe & Oswalt
CCNA 200-301 Official Cert Guide Library — Wendell Odom