Network Engineer

Response Informatics
Oxford, United Kingdom
2 days ago

Role details

Contract type
Temporary to permanent
Employment type
Full-time (> 32 hours)
Working hours
Regular working hours
Languages
English
Experience level
Senior

Job location

Oxford, United Kingdom

Tech stack

Wireless LAN
Border Gateway Protocol
Cisco Routers
Cloud Computing
Enhanced Interior Gateway Routing Protocol
EtherChannel
Trunking
Networking Hardware
Network Security
Network Layer
Networking Basics
Network Monitoring
Routing
Network administration
NMap
Open Shortest Path First
Wireshark
Virtual Local Area Networks
Wide Area Networks
Wireless Access Point
Wireless Networks
Zabbix
Network Simulation
Wi-Fi Technology
Diagnostic Tools
Computer Networking Systems
Identity Services Engine
Computer Network Operations
Firewalls (Computer Science)
Cisco Firewalls
Routing & Switching
Cisco Switches
Cisco networks

Job description

We are looking for a proactive and technically skilled Network Engineer (L1) to provide operational support for enterprise network infrastructure, including routing, switching, wireless, SD-WAN, and network security technologies. The role involves monitoring network health, handling incidents, troubleshooting connectivity issues, supporting implementations, and escalating complex issues to L2/L3 teams when required.

The ideal candidate should have hands-on experience with Cisco networking technologies, WLAN environments, firewalls, and network monitoring tools while working within an ITIL-driven support environment.

Key Responsibilities

Network Operations & Support

Monitor and support enterprise LAN, WAN, Wireless, and SD-WAN environments. Perform basic configuration, troubleshooting, and maintenance of Cisco routers and switches. Support Layer 2 and Layer 3 technologies including, Carry out switch port configurations, VLAN assignments, and connectivity troubleshooting. Assist in network device installation, upgrades, and configuration changes.

  • Wireless & SD-WAN Support
  • Support Cisco Wireless infrastructure and Cisco WLC 9800 controllers.
  • Monitor and troubleshoot enterprise Wi-Fi connectivity issues.
  • Provide operational support for Cisco Meraki devices:
  • MX Security Appliances
  • MS Switches
  • MR Access Points
  • Assist with SD-WAN monitoring and incident resolution.
  • Security & Access Control
  • Assist in managing Palo Alto PA-1140 and Cisco firewall environments.
  • Support firewall implementation and connectivity troubleshooting.
  • Monitor and support Cisco ISE and NAC solutions.
  • Assist with Zscaler ZIA and ZPA incident handling and user access issues.
  • Follow security policies and procedures to maintain network compliance.
  • Monitoring & Incident Management
  • Monitor network infrastructure using Zabbix and other monitoring platforms.
  • Perform first-level troubleshooting for network alerts and incidents.
  • Handle service requests, incidents, and escalations within SLA targets.
  • Participate in P2, P3, and P4 incident resolution activities.
  • Escalate critical issues to L2/L3 teams with proper diagnostic information.
  • Maintain incident records and update ticketing systems regularly.

Change & Operational Support

  • Execute approved network changes under guidance from senior engineers.
  • Support patching, device upgrades, and routine maintenance activities.
  • Maintain network documentation, inventory records, and standard operating procedures.
  • Participate in planned maintenance and weekend activities as required.

Collaboration

  • Work closely with Service Desk, Security, Server, Cloud, and Application teams.
  • Coordinate with vendors for issue resolution and hardware replacement.
  • Contribute to knowledge-sharing sessions and team training initiatives., This role is ideal for engineers looking to build expertise in Enterprise Networking, Cisco Technologies, Wireless, SD-WAN, Security, and Network Operations while progressing toward L2/L3 engineering responsibilities.

Requirements

  • Routing & Switching
  • VLANs
  • STP, RSTP
  • Trunking
  • EtherChannel
  • Basic OSPF, EIGRP, BGP knowledge
  • Cisco Catalyst 9300 Series
  • Wireless & SD-WAN
  • Cisco WLC 9800
  • Cisco Enterprise Wireless
  • Cisco Meraki MX, MS, MR
  • SD-WAN Fundamentals
  • Security
  • Palo Alto PA-1140 Firewall
  • Cisco Firewalls
  • Cisco ISE & NAC
  • Zscaler ZIA/ZPA
  • Basic Network Security Concepts
  • Monitoring & Troubleshooting Tools
  • Zabbix
  • Wireshark
  • Nmap
  • Cisco Packet Tracer
  • Network Management
  • Cisco Catalyst Center (Cisco DNA Center)
  • Network Monitoring and Reporting

ITIL Processes

  • Incident Management
  • Change Management
  • Service Request Management, * Bachelor's Degree in Computer or related field.
  • 5 - 8 years of experience in Network Operations or Infrastructure Support.
  • Good understanding of routing, switching, wireless, and firewall technologies.
  • Experience working in an ITIL-based support environment.
  • Excellent troubleshooting and communication skills.
  • Ability to work in a 24x7 support environment.

Preferred Certifications

  • CCNA (Preferred)
  • Cisco Certified Network Associate (Wireless/Security)
  • Cisco Meraki Fundamentals (Optional)
  • ITIL Foundation (Optional)

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