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ECS Resource Group

Senior Network Engineer

ECS Resource Group
United Kingdom · Full-time · Mid-Senior

Third Line Network Services Engineer

Permanent

Salary: £65,000 - £70,000 Per Annum


Job Description


I am working with a longstanding client who are one of the country’s leading managed service providers of communications and network service solutions. They take immense pride in their commitment to outstanding client care and their values. As a result, they work with companies including global financial institutions, retailers and broadcasting companies.


They are now looking for a Third Line Engineer to provide technical services for Internal and External Clients. This role covers a wide range of activities such as Network Design, installation, support, configuration and integration. Individuals will have a broad range of foundation skills together with a chosen a range of specialisations to achieve this level.


It should be noted that the successful applicant for this role must have a specialist level of knowledge and expertise around Juniper and Juniper network solutions.


Responsibilities



  • Design responsibilities for Network Infrastructure
  • Creation and documentation of HLD and LLD
  • Present solution proposals to potential customers and talk knowledgeably about industry best practices for network design and operation
  • Design and document all aspects of detailed infrastructure solutions including SD-WAN, Routing, Switching and Wireless
  • Where they do not exist, ensure "As-is" Diagrams and documentation are produced for services
  • Support and assist with support teams
  • Producing future architecture documents for services
  • Driving the production and enforcement of network standards and guidelines
  • Providing Guidance for Project Resource Engineers
  • Knowledge Transfer to Peers and development coaching
  • Operational Incident 3rd & 4th Line Support with Root Cause Analysis
  • Work closely with other stakeholders to ensure a smooth implementation and transition to operations team


Skills & Experience Required


  • Proven experience of working on projects, providing solution design, project support and architecture
  • Designing enterprise network infrastructure in a medium to large company
  • BGP, OSPF, QOS, NAT, and general IP routing (including the use of virtual routing domains) and switching
  • Service provider technologies including but not limited to MPBGP, MPLS, VRF-Lite and Carrier Grade NAT
  • Connecting/integrating different providers with their own autonomous systems.
  • Experience in IP addressing on a multiple site/size basis
  • Extensive experience in working with Juniper Junos based Routing and Switching
  • Experience with the following is also advantageous
  • Cisco Routing
  • Cisco Switching
  • Cisco Wireless
  • Meraki MX (Routing, Security and SDWAN)
  • Meraki MS (Switching)
  • Meraki MR (Wireless)
  • Zscaler Internet and Private Access


Qualifications & Certifications Required


  • JNCP, JNCIE and/or JNCIA - Junos Certification is a distinct advantage
  • Degree in engineering or related qualification / 5+ years practical experience in a similar role
  • Experience and formal training on 2 or more of our technology partners portfolios

Key Skills

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Posted
Feb 03, 2026
Type
Full-time
Level
Mid-Senior
Location
London Area

Industries

Computer Network Security Technology Information Media

Categories

Information Technology

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