Network L3 Engineer

Network L3 Engineer

Full-Time 45000 - 60000 £ / year (est.) No working from home possible
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At a Glance

  • Tasks: Provide advanced support for complex network environments and resolve escalated incidents.
  • Company: Wavenet, a leading UK communications and technology provider with 25 years of experience.
  • Benefits: Competitive salary, professional development, and a chance to work with cutting-edge technology.
  • Other info: Opportunity for career growth and mentoring within a collaborative technical team.
  • Why this job: Join a dynamic team and make a real impact in critical sectors like healthcare and education.
  • Qualifications: Experience in large-scale network environments and strong problem-solving skills required.

The predicted salary is between 45000 - 60000 £ per year.

Wavenet is a leading UK-based, fully integrated communications and technology provider with more than 25 years’ experience delivering trusted services to organisations across the public and private sectors. We provide a comprehensive portfolio of solutions including connectivity, cloud services, unified communications, cybersecurity, managed networks, and resilient infrastructure. Our mission is to ensure organisations remain secure, connected, and operational at all times, supported by a blend of innovative technology and highly skilled engineering expertise.

The 3rd Line Network Engineer is a senior technical position responsible for providing advanced support across complex enterprise and ISP-level network environments. The role involves resolving escalated incidents, performing detailed diagnostics, and ensuring the stability and performance of customer networks. You will support a wide range of technologies across routing, switching, wireless, firewalls, and SDWAN platforms.

Key Responsibilities:

  • Managing and resolving 3rd line network incidents and service requests end to end.
  • Supporting complex LAN, WAN, Wi-Fi, security, SD-WAN, and ISP-side environments across multi-vendor platforms.
  • Responding to and actioning escalated alerts from network monitoring teams.
  • Providing clear, timely communication to customers and internal teams throughout incident progression.
  • Working with external suppliers and vendors where appropriate to resolve technical issues.
  • Keeping all technical documentation, network diagrams, configuration records, and knowledge articles up to date.
  • Ensuring that all incidents and service requests are managed within SLA.
  • Maintaining consistent and transparent communication with customers throughout each case.
  • Taking full ownership of issues and demonstrating a proactive approach to resolution.
  • Delivering a professional and high-quality customer experience.
  • Identifying when collaboration or input from other teams is required.
  • Supporting service delivery teams with technical updates and case information.
  • Producing high-quality, detailed documentation for all technical work carried out.
  • Ensuring ticket systems and records are accurate and reflect the current status.
  • Closing tickets promptly and appropriately once confirmed resolved.
  • Strong understanding of ITIL practices including Change Management, Major Incident Management, Problem Management, and continual service improvement.
  • Ability to work effectively with the Major Incident team during high-impact outages.
  • Experienced in producing high-quality Root Cause Analysis (RCA) reports following major incidents.
  • Able to identify recurring patterns or trends across multiple incidents and contribute to Problem Management activities.
  • Ensuring all technical work is carried out in a controlled, well-documented manner that aligns with customer processes and established ITIL frameworks.
  • Providing experienced guidance and mentoring to 1st and 2nd line engineers.
  • Assisting with complex technical investigations and major incidents.
  • Contributing to internal training material and knowledge sharing.

Qualifications:

  • Experience working in large-scale, high-importance network environments.
  • Excellent verbal and written communication skills.
  • Strong analytical capability and problem-solving skills.
  • Ability to work under pressure and handle multiple complex cases concurrently.
  • High attention to detail and strong documentation discipline.
  • Experience using ITSM/ticketing platforms (ServiceNow an advantage).
  • A willingness to learn, adapt, and develop professionally.
  • A collaborative approach and desire to support the wider technical team.

Technical Experience:

  • Significant experience working at 3rd line level in enterprise or ISP network environments.
  • Hands-on experience with firewalls including Fortinet/FortiGate, Palo Alto, Cisco ASA/FTD, and Meraki MX.
  • Strong experience with Cisco routing and switching.
  • Knowledge of Cato SDWAN or similar platforms.
  • Strong understanding of BGP, OSPF; VLANs, spanning tree, trunking, LACP; firewall policies, NAT, routing behaviour, VPNs; WAN troubleshooting.

Required Certifications:

  • Fortinet NSE 4/5/6
  • Meraki Technical Specialist (Or equivalent proven experience at the same technical level.)

Additional Information:

  • Experience with MPLS, fibre circuits, carrier routing, and ISP operations.
  • Good understanding of network security principles and best practice.

Network L3 Engineer employer: Wavenet Ltd

Wavenet is an exceptional employer, offering a dynamic work environment that fosters innovation and collaboration among its skilled engineering team. With a strong commitment to employee growth, Wavenet provides extensive training opportunities and encourages professional development, ensuring that you can advance your career while working on cutting-edge technology in a supportive culture. Located in the UK, Wavenet's focus on high-quality service and long-term partnerships with diverse sectors, including public services and healthcare, makes it a rewarding place to contribute to meaningful projects that have a real impact.

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Contact Details:

Wavenet Ltd Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land Network L3 Engineer

Tip Number 1

Network with industry professionals! Attend tech meetups, webinars, or online forums related to networking and IT. Engaging with others in the field can lead to valuable connections and job opportunities.

Tip Number 2

Show off your skills! Create a portfolio showcasing your projects, certifications, and any hands-on experience you've gained. This will help you stand out during interviews and demonstrate your expertise.

Tip Number 3

Prepare for technical interviews by brushing up on key concepts and troubleshooting scenarios relevant to the role. Practice explaining your thought process clearly, as communication is key in this field.

Tip Number 4

Don't forget to apply through our website! We love seeing candidates who are genuinely interested in joining our team. Tailor your application to highlight how your skills align with our mission at Wavenet.

We think you need these skills to ace Network L3 Engineer

Advanced Network Support
Incident Management
LAN/WAN Technologies
Wi-Fi Configuration
Firewall Management
SD-WAN Implementation
MPLS Networks

Some tips for your application 🫡

Tailor Your CV:Make sure your CV is tailored to the Network L3 Engineer role. Highlight your experience with complex network environments and any relevant technologies like firewalls and routing. We want to see how your skills match what we're looking for!

Craft a Compelling Cover Letter:Your cover letter is your chance to shine! Use it to explain why you're passionate about this role and how your background makes you a perfect fit. Don’t forget to mention your problem-solving skills and experience in high-pressure situations.

Show Off Your Communication Skills:Since clear communication is key in this role, make sure your application reflects that. Use concise language and structure your documents well. We love seeing candidates who can articulate their thoughts clearly!

Apply Through Our Website:We encourage you to apply directly through our website. It’s the best way to ensure your application gets to us quickly and efficiently. Plus, you’ll find all the details you need about the role right there!

How to prepare for a job interview at Wavenet Ltd

Know Your Tech Inside Out

As a Network L3 Engineer, you'll need to demonstrate your expertise in complex network environments. Brush up on your knowledge of routing, switching, firewalls, and SDWAN platforms. Be ready to discuss specific technologies you've worked with, like Cisco or Fortinet, and how you've resolved issues in the past.

Showcase Your Problem-Solving Skills

Prepare to share examples of how you've tackled challenging network incidents. Think about times when you had to perform detailed diagnostics or manage major incidents. Highlight your analytical skills and how you approach troubleshooting under pressure.

Communicate Clearly and Confidently

Effective communication is key in this role. Practice explaining technical concepts in simple terms, as you'll need to keep customers and internal teams informed throughout incident resolution. Consider role-playing with a friend to refine your communication style.

Demonstrate Your Team Spirit

Wavenet values collaboration, so be prepared to discuss how you've worked with other teams or mentored junior engineers. Share examples of how you've contributed to team success and supported service delivery, showing that you're not just a lone wolf but a team player.