Network Engineer
Makes sure traffic gets from one place to another, securely and predictably, and proves it when someone says the network is down.
Role at a glance
The shape of the job
Pay bands are TechWaymark practitioner estimates for UK roles, reviewed 2026-09, not survey data. They vary by region, sector and employer.
What the Network Engineer role involves
- You configure and maintain switches, routers, firewalls, Wi-Fi and VPNs across offices, data centres and cloud.
- You diagnose connectivity problems layer by layer, often proving the network isn't the cause.
- You plan changes carefully. A mistyped line on a core switch can take a whole site offline.
- You increasingly automate: pushing configuration from templates rather than typing it device by device.
Read TechWaymark's full role verdict and reasoning
A network role for people who want to understand connectivity and make recoverable changes.
- Domain
- Networking
- Entry
- £31–38k
- Senior
- £48–60k
- You like physical systems and protocols you can actually read on a wire
- You'd rather own a smaller deep specialism than be a generalist forever
- You're prepared to study for a CCNP and mean it, not just collect a SAA
- You enjoy understanding connectivity across changing platforms
- You can't bear change windows, half the work happens between 10pm and 4am
- You are choosing between offers without comparing responsibilities and total terms
- You've never enjoyed a packet capture and aren't sure you ever will
What "doing well" looks like in the seat
- You can trace a problem from a user complaint to a switchport without help
- Your changes go in clean and roll back cleaner
- You're the one the security team calls when segmentation breaks
- You can explain BGP or VLANs to a stakeholder without a whiteboard
Physical access, maintenance windows and on-call vary by employer. Check how the team tests changes and whether automation and cloud networking belong to the remit.
Illustrative
A day in the role
- Review overnight alerts. A branch VPN flapped twice; check the provider's circuit
- "The internet is slow" from one floor. Check the switch, the uplink and the Wi-Fi before blaming anyone
- Firewall request: a new supplier needs access to one server on one port. Check it's that narrow
- Plan a switch replacement at a remote site, including who's on site to plug things in
- Capture packets to prove an application's timeouts are on the server side
- Update the diagram and configuration backups after today's changes
An example day. Roles and organisations vary, and no two days match.
Day to day
What you'll work with
Systems
Tools
Concepts
Hiring reality
What employers actually expect
Must understand
- Subnetting without a calculator
- Routing and switching fundamentals
- Methodical layer-by-layer diagnosis
- Careful, documented changes
Commonly expected
- CCNA or equivalent
- Firewall rule management
- Wi-Fi troubleshooting
- Some time on a support or NOC desk
Sets you apart
- Network automation you've actually used
- Packet capture analysis you can explain
- Cloud networking experience (VPCs, VNets)
- A vendor security cert such as PCNSA
What this role isn't
It isn't just cabling, and it isn't a dying skill because everything went to cloud. Cloud networks are still networks, and they're often built by people who don't understand routing.
How the role changes with seniority
Handles moves, adds and changes, first-line network faults, and runs changes others designed.
Owns sites or services, designs changes, leads troubleshooting on hard faults.
Designs the network's direction, sets security and segmentation standards, owns major migrations.
Nobody puts this in the advert
The hard parts
Guilty until proven innocent
The network gets blamed for everything. You spend real time proving it's something else.
High-stakes changes
Mistakes are rarely small. One bad change can cut off hundreds of people.
The year-six fork
Progression past experienced engineer means specialising, and the options pull in different directions.
Evening work
Core changes happen out of hours. Expect some late nights each month.
More than one way in
How people actually get into it
From IT support or NOC
Common and effective. You learn the estate while studying for CCNA.
Apprenticeship
Network engineering apprenticeships exist, often with telecoms firms and large employers.
College or degree
Networking courses help, but employers still look for hands-on lab work.
Self-taught with a lab
Packet Tracer or GNS3 labs plus CCNA can get you a junior interview.
Evidence employers value
"CCNA certified"
A lab topology you built with VLANs and routing, plus the one fault that took you longest to find
"Firewall experience"
A rule review where you removed or narrowed rules and explained why each was safe to change
"Knows Wireshark"
A packet capture you annotated to show where a connection actually failed
Projects that prove it
Small pieces of work you can do on your own, and what each one shows an employer.
Build a multi-site lab
2 weekendsIn Packet Tracer or GNS3, build two sites with VLANs, routing between them and a firewall. Break one link and watch what happens.
What it demonstrates
Diagnose with packets
1-2 eveningsCapture traffic while loading a website at home. Find the DNS lookup, the TCP handshake and the TLS start, and annotate each step.
What it demonstrates
Automate one config task
2-3 eveningsWrite a small Python or Ansible script that backs up the configuration of your lab devices, then run it on a schedule.
What it demonstrates
Your next hops
Where Network Engineer can take you
Other common branches
There is no single ladder. See the routes on the Atlas.
Worth the effort?
Certifications that complement it
The standard first networking cert in the UK. Frequently listed on junior adverts, and interviewers often test the same material.
See certification verdict CCNPThe step up once you've got a few years in. Signals you can design as well as operate.
See certification verdict Palo Alto PCNSA (retired)Palo Alto's administrator cert. Worth it if your employer runs their firewalls, and useful for a move towards network security.
See certification verdict Fortinet NSE 4Fortinet's equivalent. Common in UK public sector and mid-sized estates.
See certification verdict CCNP SecurityRelevant to the route into this role.
See certification verdict CCNP EnterpriseRelevant to the route into this role.
See certification verdict Palo Alto PCNSE (retired)Relevant to the route into this role.
See certification verdict Juniper JNCIARelevant to the route into this role.
See certification verdictInterview reality
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An example of work that mainly operates systems
Where this fits
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Could you realistically get here from where you are?
The Guided Route compares your background with this role and shows the honest route, hop by hop.
Last reviewed 2026-09. Photographs are illustrative.