At a Glance
- Tasks: Lead the design and delivery of cutting-edge network infrastructure projects.
- Company: Innovative full-fibre broadband provider transforming connectivity in London.
- Benefits: Competitive salary, hybrid working model, and a supportive culture.
- Other info: Opportunity to mentor junior engineers and influence network strategy.
- Why this job: Join a team shaping London's digital future with impactful projects.
- Qualifications: Strong experience in network project delivery and expertise in Cisco equipment.
The predicted salary is between 60000 - 80000 £ per year.
We’re partnering with an innovative full‑fibre broadband provider transforming connectivity across London. This fast‑growing organisation is delivering next‑generation FTTP (Fibre to the Premises) infrastructure, enabling ultra‑fast, reliable connectivity for homes and businesses.
As a Principal Network Engineer, you’ll act as a technical authority and escalation point, leading the design, delivery, and evolution of a cutting‑edge network infrastructure. This is a hands‑on, project‑focused role, where you’ll own initiatives end‑to‑end – from design and scoping through to implementation, optimisation, and ongoing support. You’ll also have the opportunity to mentor junior engineers and collaborate across key stakeholder groups, contributing to strategic network decisions.
Key Responsibilities- Lead the design, delivery, and optimisation of network infrastructure projects
- Own the full project lifecycle from scoping to implementation and improvement
- Act as the final escalation point for complex network faults and issues
- Ensure network availability and performance meet strict SLA targets
- Design and implement scalable, resilient carrier‑grade solutions
- Monitor network health and respond proactively to alarms and incidents
- Produce high‑quality documentation (HLD, LLD, migration plans, procedures)
- Collaborate with internal teams, vendors, and stakeholders to deliver solutions
- Provide out‑of‑hours support as part of an on‑call rota
- Mentor and support junior engineers
- Strong experience in network project delivery (ISP/telco environment preferred)
- Proven expertise with carrier‑grade Cisco networking equipment
- Deep knowledge of: BGP, OSPF, IS‑IS, MPLS & MPLS VPNs, IPv6, multicast networking, Firewalls and network security
- Strong troubleshooting skills, including packet capture analysis
- Experience with network monitoring tools (e.g., SolarWinds, Nagios, PRTG)
- Ability to work autonomously and lead technical projects
- Experience producing detailed technical documentation
- CCIE (Service Provider or Enterprise) or equivalent experience highly desirable
- Network security expertise
- Exposure to PON or fibre infrastructure environments
- Scripting/automation skills
- Experience with Software Defined Networking (SDN)
- Progress towards additional advanced certifications
Why Apply? Be part of a company transforming London’s digital infrastructure. Work with cutting‑edge fibre and carrier‑grade technologies. Opportunity to lead impactful projects and influence network strategy. Supportive, values‑driven culture focused on excellence, innovation, and collaboration. Hybrid working model with flexibility.
Apply today or reach out for a confidential discussion to learn more about this opportunity.
Principal Network Engineer in London employer: Marshall Wolfe
Join a pioneering full-fibre broadband provider that is revolutionising connectivity across London. As a Principal Network Engineer, you will thrive in a supportive and innovative work culture that prioritises excellence and collaboration, while enjoying the flexibility of a hybrid working model. With ample opportunities for professional growth and the chance to lead transformative projects, this role offers a rewarding career path in a fast-growing organisation at the forefront of digital infrastructure.
StudySmarter Expert Advice🤫
We think this is how you could land Principal Network Engineer in London
✨Get Chummy with Industry Events
Dive into telecommunications networking conferences and expos. These are golden opportunities to meet potential employers like Marshall Wolfe and learn about open positions directly from their teams. Keep an eye out for workshops or panels – they’re perfect for showcasing your passion and expertise!
✨Join Networking Communities
Find online forums or local meetups that focus on telecommunications and networking. Sites like LinkedIn Groups or Reddit communities can be great for connecting with professionals in the field. Just remember to participate in discussions – you never know when someone might mention job openings at places like Marshall Wolfe.
✨Showcase Your Skills with Personal Projects
If you’ve got any personal projects or contributions to open-source networking tools, flaunt them! Create a portfolio that showcases your skills relevant to what telecommunication companies are looking for. It’s a great conversation starter during interviews and networking chats.
✨Utilise Online Job Boards Wisely
While we’re all about encouraging you to apply through our website, also keep an eye on job boards specific to tech and telecommunication roles. Websites such as Telecommunication Jobs and TechCareers often list full-time roles that may not appear elsewhere. Just be sure to tailor every application to grab attention – even small tweaks can make a big difference!
We think you need these skills to ace Principal Network Engineer in London
Some tips for your application 🫡
Show Off Your Technical Know-How:When you're applying for a role in telecommunications and networking, it’s crucial to highlight your technical skills. Mention specific technologies you're proficient in, like IP networking, VoIP, or security protocols. Be sure your CV includes any relevant certifications such as CCNA or CompTIA Network+; they really show you've got the chops for the job.
Tailor Your Experience to Match Networking Projects:In your CV and cover letter, don’t just list your past jobs—showcase specific projects that align with the role! If you've worked on network design, implementation, or troubleshooting, weave those experiences in and highlight metrics to demonstrate your impact. This paints a vivid picture of how you'd fit into the role at Marshall Wolfe.
Show Enthusiasm for the Industry:With telecommunications evolving rapidly, it’s important to express your passion for the field in your application. Mention any trends or innovations you've been following that excite you and how they'd influence your work. This can really set you apart and show that you're not just after a job, but a career!
Keep It Clean and Professional:While it’s important to be personable, ensure your application maintains a clean and structured format. Use clear headings and bullet points to make it easy for hiring managers to dig into your skills and experience. Remember, you’re applying for a full-time role, so a well-organised application will signal your seriousness about the position at Marshall Wolfe.
How to prepare for a job interview at Marshall Wolfe
✨Brush Up on Networking Protocols
Make sure you’re up to speed with the key networking protocols like TCP/IP, UDP, and perhaps even MPLS if it's relevant. We can expect technical questions about how these protocols function and the problems they solve, so a solid understanding will help you shine.
✨Showcase Your Projects
Got a portfolio? Bring it along! Highlight any relevant projects where you've designed or managed network systems. This is your chance to demonstrate practical experience; employers love to see how your skills can be applied in real-world scenarios.
✨Get Comfortable with Technical Scenarios
You might be faced with a case study or a technical troubleshooting scenario during the interview. Practise responding to common networking issues—like packet loss or latency problems. Thinking through these scenarios will help us sound confident and competent in our responses.
✨Emphasise Team Collaboration Skills
In the telecommunications field, teamwork is key! Make sure to share examples of how you’ve worked collaboratively, whether in past jobs or projects at uni. Employers want to see that you’re not just technically savvy, but also great at working within a team setting.
