| Detail | For this role |
|---|---|
| Department | Information Technology |
| Level | Entry level |
| Reports to | Network Lead |
| Direct reports | None |
| Experience | Fresher or up to 3 years in network engineering |
Network Engineer job description template
Copy this job description, replace the text in square brackets and post it on your careers page or a job portal.
Job title: Network Engineer
Department: Information Technology
Reports to: Network Lead
Location: [City], [office, branch or site]
About the role
A Network Engineer designs, implements and troubleshoots the network that connects a company's offices, data centres and users. At the entry level they configure routing and switching, implement approved designs and resolve deeper connectivity issues under senior guidance. A good network engineer builds a reliable, secure network, plans for growth and diagnoses complex faults methodically. The role sits in the IT infrastructure or network team and reports to a network lead or infrastructure manager, going deeper into design and configuration than a network administrator.
Key responsibilities
- Configure routing protocols, VLANs, trunking and switching to implement the approved network design.
- Set up and tune firewalls, VPNs and access control to keep the network secure.
- Implement network changes and new site links following change control and testing.
- Diagnose complex connectivity, latency and packet loss issues down to the root cause.
- Plan IP addressing, subnets and capacity for current and future needs.
- Configure quality of service so voice and critical traffic get priority.
- Set up monitoring, alerts and traffic analysis to keep the network visible.
- Support data centre and branch connectivity, including redundant links and failover.
- Work with vendors on advanced faults, upgrades and new equipment.
- Document designs, configurations and test results for every network change.
Requirements
- Graduate or diploma in computer science, IT or electronics
- Networking certification such as CCNA, with CCNP an advantage
- Solid TCP/IP and routing knowledge
- Fresher or up to 3 years in network engineering
KRAs and KPIs for a Network Engineer
Key result areas for the appraisal form, each with a KPI you can measure every month or quarter.
| Key result area | How to measure it |
|---|---|
| Network reliability | Network uptime and redundancy meet the agreed service level |
| Change delivery | Network changes implemented on schedule with no unplanned outage |
| Fault resolution | Complex network faults resolved within the agreed time |
| Security | No incident caused by a misconfigured firewall or access rule |
| Capacity planning | No congestion outage, with capacity planned ahead of demand |
| Documentation | Designs and configs documented for every implemented change |
Skills and tools
Tools used day to day: Cisco or equivalent switches and routers, Firewalls, VPN gateways, Wireshark, Monitoring tools, Terminal and SSH.
Reporting line and career path
Next roles: Senior Network Engineer, Network Security Engineer, Network Architect
Interview questions for a Network Engineer
- Explain how routing decides the path a packet takes.
- What is the difference between a Layer 2 and a Layer 3 switch?
- How do you troubleshoot high latency between two sites?
- How does a VPN secure traffic between offices?
- How do you plan IP addressing for a growing company?
- Walk me through implementing a network change with rollback in mind.
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What does a network engineer do?
A network engineer designs, implements and troubleshoots the network that connects a company's offices, data centres and users. They configure routing and switching, set up firewalls and VPNs, plan IP addressing and capacity, and diagnose complex faults. They implement changes carefully and document designs, so the network stays reliable and secure as the company grows.
How do I become a network engineer in India?
Start with strong TCP/IP and networking fundamentals, then earn the CCNA and practise on real or simulated equipment. Many begin in network administration or IT support and move up as they learn routing, switching, firewalls and troubleshooting. Advanced certifications such as CCNP and hands on project experience lead to senior and architect roles.
Is network engineering a good career with cloud growing?
Yes. Cloud still runs on networks, and companies need engineers to connect offices, data centres and cloud securely. Skills in routing, switching, firewalls and now cloud networking stay in demand across Indian enterprises. Engineers who add cloud networking and security to their core skills keep strong and growing career options.