Career path
Computer Networking
Network engineers design, build and fix the connections between people, devices, data centres and the cloud. It is a hands-on career with clear steps, and strong networking skills are also the best foundation for moving into cloud or security later.
Is this path for you?
- You like understanding how things connect and why they break
- You enjoy hands-on work with real equipment
- You stay calm and logical when something is down
Quick facts
- Typical first job
- IT support or NOC technician
- Core skills
- Routing, switching, IP addressing, Wi-Fi, firewalls
- Career levels
- 5, from beginner to architect
Career levels at a glance
Select a level to jump to the details.
Level by level: what to learn and do
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Starting out
0–1 yearIT support technician · Helpdesk · NOC trainee
What you do
Help users, set up devices, patch cables, reset accounts and log tickets. You learn how a real network behaves day to day.
Skills to learn
- How networks work: OSI model, TCP/IP, cabling
- IP addressing and subnetting
- DNS, DHCP and basic troubleshooting commands
- Windows and Linux basics
Certifications to consider: CompTIA Network+ or Cisco CCNA (start studying)
To reach the next level: Pass CCNA, build a home lab and volunteer for network tasks at work.
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Junior network engineer
1–3 yearsJunior network engineer · NOC engineer · Network technician
What you do
Monitor the network, handle network tickets, configure switch ports and VLANs, and escalate bigger problems to senior engineers.
Skills to learn
- VLANs, trunks and spanning tree
- Static and dynamic routing basics (OSPF)
- Wireless basics
- Monitoring with SNMP and syslog
- Clear documentation
Certifications to consider: Cisco CCNA
To reach the next level: Take ownership of small changes from start to finish and learn routing and firewalls in depth.
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Network engineer
3–5 yearsNetwork engineer · Network administrator
What you do
Plan and carry out changes, run routing and firewalls, build site-to-site VPNs, design Wi-Fi and fix the difficult problems.
Skills to learn
- OSPF and BGP
- Firewalls, NAT and IPsec VPNs
- Wireless design and surveys
- Network security hardening
- Python scripting basics
Certifications to consider: CCNP Enterprise, or a firewall vendor certification (Fortinet, Palo Alto Networks, Juniper)
To reach the next level: Lead a project, automate repetitive tasks and start mentoring juniors.
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Senior network engineer
5–8 yearsSenior network engineer · Network team lead
What you do
Lead projects such as new offices, data centre upgrades and SD-WAN, set standards, review changes and mentor the team.
Skills to learn
- Data centre and SD-WAN design
- Network automation (Python, Ansible, APIs)
- High availability and capacity planning
- Hybrid cloud networking
Certifications to consider: CCNP specialist exams; CCIE for those who want expert level
To reach the next level: Think in terms of design, cost and business risk, not just configuration.
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Architect and leadership
8+ yearsNetwork architect · Infrastructure manager
What you do
Design the network strategy, choose vendors, set budgets and standards, and make sure the network supports where the business is going.
Skills to learn
- Enterprise and multi-site architecture
- Security architecture and Zero Trust
- Budgeting and vendor management
- Communicating with leadership
Certifications to consider: CCIE or CCDE (optional); architecture and management training
To reach the next level: Choose between deep technical architecture and people management.
Years of experience are typical ranges, not rules: some people move faster, others take longer. Certification names and versions change, so always check the exam provider's website before you book.
How to become a network professional: step by step
- Learn the fundamentals: the OSI model, IP addressing and subnetting.
- Practise every day in a simulator (Cisco Packet Tracer) and with the subnet calculator.
- Get an entry IT support or NOC job to gain real experience while you study.
- Pass the CCNA. It is the most widely recognised entry networking certification.
- Build and document lab projects: VLANs, routing, a firewall, a site-to-site VPN.
- Apply for junior network or NOC engineer roles, showing your lab write-ups as evidence.
- Keep growing: routing in depth, firewalls, automation, then CCNP.
Start learning now
Notes libraryCompare with other paths
Many professionals move between these areas during their career. Strong networking is the foundation for all three.