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# Network Support Engineer

- **Company:** N Consulting Ltd
- **Location:** Madrid, Spain
- **Contract:** Temporary contract
- **Skills:** Configuration Management Databases, Ethernet, Internet Protocol, Network Diagrams, Network Monitoring, Network Administration, TeamViewer, Virtual Local Area Networks, Network Routers, Computer Networking Systems, Firewalls (Computer Science), Backend, Os Ticket, Information Technology, Network Support, Firewall Services Module, Cisco Switches
- **Published:** July 17, 2026
- **Apply:** https://www.adzuna.es/contact-us.html

## About the Role

+ Bachelor's Degree in Computer Science or related area
 + 4 years' of experience with network administration, Racking,Stacking of Devices, basic troubleshooting of Cisco Switches, Firewall, Routers etc.
 + Knowledge of IP networking fundamentals

## Description

+ Maintain, implement, and troubleshoot networks
 + Design and support our network systems and infrastructure
 + Configure and operate routers and switches
 + Monitor network performance and make recommendations based on performance analysis
On-Site Troubleshooting & Resolution
Once the engineer arrives on-site, the following tasks must be executed systematically:
A. Physical Inspection & Basic Checks
Visual Inspection

 + Verify device power status (LED indicators).
 + Check cabling for damage/loose connections.
 + Validate rack stability and proper airflow.
Connectivity Testing

 + Use cable testers to validate Ethernet/fiber links.
 + Reseat SFPs/transceivers if link flaps are detected.
 + Confirm switch port status (shut/no shut if needed).
B. Hardware Replacement
Failed Device Swap

 + Power down the faulty device (if safe) after confirmation with Client SME.
 + Replace with pre-configured spare (if available).
 + Document serial numbers in the ITSM ticket.
C. Coordination with Remote Teams
Live Troubleshooting

 + Establish a secure remote session (SSH/TeamViewer).
 + Share console output with backend engineers.
 + Implement configuration fixes as directed.
 + Initiate Teams call and share screens
D. Post-Resolution Validation
Functional Testing

 + Ping tests, traceroutes, and throughput checks.
 + Verify VLAN/access control for firewall rules.
 + Obtain Infosys client sign-off before departure.
 1. Post-Support Steps
Step 6: Ticket Resolution & Closure

 + If resolved, the engineer updates the ITSM ticket with:
 + Actions taken
 + Replaced components (if any)
 + Client confirmation (ITSM Approval or email approval)
 + If unresolved, a temporary workaround is implemented, and the ticket is escalated.
Step 7: Asset & Documentation Update

 + Spare parts used are recorded in the ITSM asset inventory.
 + Network diagrams & CMDB are updated if changes were made.
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