3rd Line IP Network Engineer | AspireCom Recruitment | London, United Kingdom

• Job Title: 3rd Line IP Network Engineer | Aspire Com Recruitment | London, United Kingdom
• Recruiting Company: Aspire Com Recruitment
• Job Location: London, United Kingdom
• Job Type: Full-Time | Hybrid
• 20% Annual Bonus
• £2,500 Training Budget
• Comprehensive Benefits Package
• Candidate Requirement: UK Residents Only | Must be able to commute to the London office

Experience Required: 5+ Years

• Industry: Managed Services Provider (MSP)
• Position Summary

A growing Managed Service Provider is seeking an experienced 3rd Line IP Network Engineer to join its technical operations team in London.

This role is ideal for a senior networking professional who thrives in complex multi-vendor environments and enjoys acting as an escalation point for critical network incidents while supporting enterprise customers across diverse networking technologies.

Detailed Job Description

As a 3rd Line IP Network Engineer, you will provide advanced technical support and serve as the highest point of escalation for complex network-related incidents across customer environments.

You will work closely with internal teams, customers, vendors, and third-party providers to troubleshoot and resolve issues involving SD-WAN, LAN, WAN, wireless networks, firewalls, and managed network services.

The successful candidate will support network upgrades, infrastructure changes, performance optimization, and operational improvements across a range of technologies including Cisco, Juniper, Fortinet, and Meraki solutions.

This role combines hands‑on troubleshooting, customer engagement, and technical leadership within a fast‑paced MSP environment.

Occasional out-of-hours support may be required to support critical infrastructure activities and maintenance windows.

Key Responsibilities

• Provide 3rd line technical support and escalation management for enterprise network environments.
• Troubleshoot and resolve complex LAN, WAN, SD-WAN, wireless, and security-related issues.
• Support and maintain customer network infrastructure across multi-vendor environments.
• Act as the primary escalation point for service desk and NOC teams.
• Diagnose routing, switching, firewall, and connectivity issues across diverse network architectures.
• Coordinate with customers, vendors, carriers, and third‑party service providers to resolve incidents.
• Implement network changes, upgrades, patches, and maintenance activities.
• Monitor network performance and proactively identify opportunities for optimization.
• Participate in incident response, root cause analysis, and problem management activities.
• Maintain technical documentation, network diagrams, and operational procedures.
• Support change management processes and ensure service continuity.
• Contribute to continuous improvement initiatives and service quality enhancements.
• Provide technical expertise during customer meetings and service reviews.
• Support out‑of‑hours maintenance and emergency activities when required.
• Required Qualifications & Skills
• 5+ years of experience in a Service Desk, NOC, Network Operations, or Technical Support environment.
• Experience working within ISP, MSP, or SME network environments.
• Strong hands‑on networking background with advanced troubleshooting skills.
• Excellent understanding of TCP/IP networking principles and enterprise network architectures.
• Strong experience with routing and switching technologies.
• Hands‑on experience supporting SD‑WAN environments.
• Experience administering and troubleshooting enterprise firewall platforms.
• Strong knowledge of wireless networking technologies and deployments.
• Experience supporting Cisco networking solutions.
• Experience with Juniper networking platforms.
• Experience managing Fortinet security and networking solutions.
• Experience supporting Cisco Meraki networking and wireless environments.
• Strong analytical, problem‑solving, and fault‑finding skills.
• Excellent verbal and written communication skills.
• Ability to manage multiple priorities within a customer‑focused support environment.
• Nice‑to‑Have Skills
• Cisco Certified Network Associate (CCNA) certification.
• Cisco Certified Network Professional (CCNP) certification.
• Juniper Networks certifications.
• Fortinet NSE or related certifications.
• Experience with network automation and scripting tools.
• Knowledge of cloud networking within AWS, Azure, or hybrid environments.
• Exposure to ITIL service management frameworks.
• Experience supporting large‑scale enterprise or managed service customer environments.
• Recruitment Pro Tip

For senior MSP networking roles, employers want candidates who can demonstrate ownership of major incidents and complex troubleshooting scenarios.

Highlight examples where you resolved critical SD‑WAN, firewall, routing, or wireless issues, reduced downtime, improved network performance, or led infrastructure upgrades across Cisco, Juniper, Fortinet, or Meraki environments.

Quantifiable results and customer‑facing experience will significantly strengthen your application.

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