Photo: Gsmith1of2 at English Wikipedia (Public domain)
Job description
The daily work centers on configuring and tuning routers, switches, and firewalls, then watching performance and security dashboards for anything that looks off. When an outage hits, engineers are the ones diagnosing the problem under real time pressure, sometimes stepping into cold, noisy data centers or server rooms to work directly on the hardware. Beyond firefighting, the role includes planning capacity for growth, documenting network topology, and coordinating with security teams on patches and access controls. On-call rotations are common, and a bachelor's degree in computer science is typical, though certifications like CCNA or CCNP can substitute.
Pros
- Solid pay range up to $130k, achievable via certifications like CCNA/CCNP instead of only a degree
- High day-to-day autonomy, with most troubleshooting handled independently once trusted with the network
- Foundational, always-in-demand skill set since every company's tech stack depends on connectivity
Cons
- Above-average hours, and on-call responsibilities mean outages can strike outside normal shifts
- A single configuration mistake can take down connectivity broadly, so precision carries real stakes
- Occasional time in cold, noisy server rooms and data centers away from a normal desk
A typical day
The change window closed at 2am, so the morning starts by verifying the new branch-office circuit is passing traffic cleanly and closing out the change ticket. Design work owns the next block: mapping VLANs and firewall rules for an office move, drawing the topology twice because the first draft always hides a bottleneck. Just before lunch, monitoring lights up — latency spiking between two sites — and the engineer works the problem down the stack: interface counters, routing tables, then a misbehaving BGP session reset with vendor support on the line. The afternoon is automation progress, converting a manual switch-config process into a script that does it identically every time, plus a capacity review that argues for a bandwidth upgrade with graphs instead of adjectives.
Tasks at the job
- Design and configure network infrastructure, including routers, switches, and firewalls.
- Monitor network performance and security for anomalies or degraded service.
- Troubleshoot outages and connectivity issues, often under time pressure.
- Plan capacity upgrades to keep pace with growing traffic or new locations.
- Document network configurations, topology, and change history.
- Coordinate with security teams to patch vulnerabilities and enforce access controls.
Workplace & working conditions
Work happens indoors at a desk, with occasional time in server rooms or data centers that run cold and noisy from equipment fans.
On-call responsibilities bring real time pressure when outages hit, and configuration work demands precision since a small error can take down connectivity broadly. Much of the troubleshooting is done independently.
Education necessary or common
Bachelor's degree in computer science or a related field, or equivalent certifications (e.g. CCNA, CCNP)
Common college majors
Licenses & certifications
- Cisco CCNA, then CCNP
- CompTIA Network+
- Juniper or cloud networking certifications (AWS/Azure)
Career path
Related fields
Courses to take
- Networking or Cisco Academy CTE courses — some high schools teach the actual CCNA curriculum
- AP Computer Science Principles — how the internet works, formalized
- AP Computer Science A — network automation is the field's direction
- Algebra II — binary math and subnetting
- Physics — signals, latency, and transmission fundamentals
Clubs, activities & competitions
- CyberPatriot — network defense under competition pressure
- Home networking lab — used enterprise switches are cheap and educational
- School esports or LAN events — volunteer to run the network
- SkillsUSA — internetworking competitions
First steps you can take now
- Map your home network completely this week — every device, IP, and path to the internet
- Learn subnetting cold with free practice tools; it's the field's multiplication table
- Download Cisco Packet Tracer (free) and build a two-office network simulation
- Start CCNA study materials — the certification is achievable in high school and hiring managers notice
