3rd Line Network Engineer

IMT Resourcing Solutions; City Of London; Hybrid; GBP 63,000 - 77,000; Full time

Benefits offered by this job

Bonus scheme

Employee share plan

Private healthcare

Pension

25 days annual leave

Job summary

IMT Resourcing Solutions Ltd is seeking a 3rd Line Network Support Engineer in London, hybrid working. You will own complex network incidents across multi-vendor environments and help improve reliability and customer experience.

The role requires hands-on routing and switching, TCP/IP and BGP, experience with Juniper, Nokia, Fortinet, RAD, ADVA, Ruckus or Mist, and strong stakeholder communication. On-call rotation and ongoing training are provided, with a competitive salary and benefits.

Qualifications

• Significant experience in 3rd Line, advanced 2nd Line or senior network support, ideally within an ISP, carrier or service provider.
• Strong routing and switching knowledge, particularly TCP/IP and BGP.
• Hands-on experience with technologies including Juniper, Nokia, Fortinet, RAD, ADVA, Ruckus or Mist.
• Confidence making configuration changes to live, customer-facing infrastructure.
• Experience managing complex incidents and delivering effective technical resolutions.
• Excellent communication skills, including explaining technical issues to non-technical stakeholders.

Responsibilities

• Act as the senior technical escalation point for complex network faults and incidents.
• Troubleshoot routing, switching and wireless issues across customer-facing infrastructure.
• Configure and maintain enterprise and carrier-grade network equipment, following change control procedures.
• Investigate recurring incidents, perform root cause analysis and implement permanent fixes.
• Work closely with field engineers, suppliers and the Network Operations Centre to resolve critical issues.
• Improve technical documentation, monitoring, alerting and support processes.
• Participate in an on-call escalation rota.

Skills

Routing & Switching

Network Troubleshooting

Stakeholder Communication

Tools

Juniper

Nokia

Fortinet

RAD

ADVA

Ruckus

Mist

Job description

3rd Line Network Support Engineer

Location: London - Hybrid Working
Salary: Up to £70,000 per annum + 20% Bonus
Employment: Permanent
Benefits: Bonus scheme, employee share plan, private healthcare, pension, 25 days' annual leave plus bank holidays and additional benefits.

Our client, a market leading MSP, is looking for an experienced 3rd Line Network Support Engineer to join its growing technical support function.

This is an opportunity to take ownership of complex network incidents, work across a multi-vendor environment and play a key role in improving network reliability and customer experience.

What you'll do

• Act as the senior technical escalation point for complex network faults and incidents.
• Troubleshoot routing, switching and wireless issues across customer-facing infrastructure.
• Configure and maintain enterprise and carrier-grade network equipment, following change control procedures.
• Investigate recurring incidents, perform root cause analysis and implement permanent fixes.
• Work closely with field engineers, suppliers and the Network Operations Centre to resolve critical issues.
• Improve technical documentation, monitoring, alerting and support processes.
• Participate in an on-call escalation rota.

What we're looking for

• Significant experience in 3rd Line, advanced 2nd Line or senior network support, ideally within an ISP, carrier or service provider.
• Strong routing and switching knowledge, particularly TCP/IP and BGP.
• Hands-on experience with technologies including Juniper, Nokia, Fortinet, RAD, ADVA, Ruckus or Mist.
• Confidence making configuration changes to live, customer-facing infrastructure.
• Experience managing complex incidents and delivering effective technical resolutions.
• Excellent communication skills, including explaining technical issues to non-technical stakeholders.

Experience with wireless troubleshooting, network automation, scripting, APIs or fibre networks would be advantageous.

Training and certifications

Our client supports professional development and further certifications, including Juniper, Fortinet, Mist and Ekahau qualifications.

Why join?

• Salary up to £70,000, depending on experience.
• Exposure to complex, business-critical network infrastructure.
• Opportunity to influence technical standards and support improvements.
• Structured training and certification support.
• Comprehensive benefits package, including bonus, healthcare and employee share scheme.