At a Glance
- Tasks: Ensure the stability and performance of our ISP core network while tackling complex technical challenges.
- Company: Join Modern Networks, a leading IT Managed Service Provider with a focus on innovation.
- Benefits: Enjoy a competitive salary, 25 days annual leave, and a strong work-life balance.
- Other info: Support junior engineers and contribute to exciting engineering improvements.
- Why this job: Make a real impact in a hands-on role within a dynamic ISP environment.
- Qualifications: Proven experience with ISP networking technologies and strong troubleshooting skills required.
The predicted salary is between 55000 - 65000 £ per year.
Salary: £55,000 - 65,000 per year
Requirements
- Strong experience working with ISP networking technologies, including BGP, MPLS, LDP, VRFs, L2VPNs, L3VPNs, PPPoE, OSPF, and IPv6
- Extensive hands-on experience configuring and supporting Juniper MX and QFX platforms in a live production environment
- Proven ability to troubleshoot and resolve complex issues across a core network with a structured and methodical approach to fault-finding
- Experience delivering network change, upgrades, and project work safely within a controlled production environment
- Good understanding of network performance, resilience, and operational best practice within an ISP or service provider setting
- Experience supporting core network services and related virtualised or Linux-based infrastructure would be beneficial
- Comfortable producing clear technical documentation and detailed change requests
- Able to work independently, take ownership of technical problems, and contribute to wider engineering improvements
- Experience with RADIUS and TACACS would be beneficial
- Able to support junior engineers and explain technical concepts clearly to non-technical stakeholders
- Exposure to automation and open-source tooling would be an advantage
Responsibilities
- Take responsibility for the stability, performance, and ongoing improvement of our ISP core network and supporting platforms
- Provide hands-on operational support across the core network and associated infrastructure
- Deliver technical projects and network changes safely in a live production environment
- Investigate, troubleshoot, and resolve complex technical issues as they arise
- Contribute to service improvements, automation, and wider engineering enhancements
- Work within the technical direction set by our Head of Technology & Engineering
- Produce clear technical documentation and detailed change requests
- Support and develop junior engineers
- Communicate technical concepts clearly to non-technical stakeholders
Technologies
- Support
- Linux
- MPLS
- Network
About the Company
We are Modern Networks, established in 2000, and we are a growing IT Managed Service Provider and Internet Service Provider specialising in services for the property management sector and commercial businesses nationwide. We work closely with our customers to deliver a wide range of IT services, from endpoint technology to connectivity and telephony, supported by partnerships with market-leading vendors. This is a hands-on senior technical role for an experienced network engineer who enjoys taking ownership, solving technical problems, and working in a live ISP environment. We offer great prospects, knowledgeable and experienced colleagues, a strong work-life balance, a commitment to diversity and inclusion, and 25 days annual leave plus bank holidays.
Senior Core Network Engineer in London employer: Modern Networks Ltd
Modern Networks Ltd is an exceptional employer, offering a dynamic work culture that fosters innovation and collaboration in the heart of the UK. With a strong focus on employee growth, you will have the opportunity to mentor junior engineers while enhancing your own skills in a fast-paced ISP environment. The company prioritises stability and performance, ensuring that you are part of a team dedicated to continual improvement and excellence in network engineering.
