Senior Core Network Engineer

Senior Core Network Engineer

Full-Time 70000 - 90000 £ / year (est.) No home office possible
Ncounter Technology Recruitment

At a Glance

  • Tasks: Design and optimise resilient network architectures for high-performance financial services.
  • Company: Global financial services organisation with a focus on innovation and stability.
  • Benefits: Hybrid working, competitive salary, and opportunities for professional growth.
  • Other info: Opportunity for technical ownership and long-term impact in a dynamic industry.
  • Why this job: Join a team that supports mission-critical systems and tackle complex networking challenges.
  • Qualifications: Experience in high-availability environments with BGP, OSPF, and multicast networking.

The predicted salary is between 70000 - 90000 £ per year.

Location: London (Hybrid Working Available)

Industry: Global Financial Services / Institutional Asset Management

Ncounter is supporting a global financial services organisation as they hire a senior Networking Specialist into a business-critical infrastructure role based in London, with hybrid working in place. This team underpins highly available, low-latency platforms that operate across international markets and demand exceptional network performance and stability.

Key Responsibilities

  • Design and operate resilient network architectures across LAN, WAN, data centre, and cloud environments
  • Own and optimise routing and traffic flows using BGP and OSPF in large-scale enterprise networks
  • Design, support, and troubleshoot multicast architectures for real-time data distribution
  • Translate technical and business requirements into robust, well-documented network designs
  • Lead network change and delivery initiatives alongside internal engineering teams and vendors
  • Act as a senior escalation point for complex network incidents and performance issues
  • Continuously improve network resilience, throughput, and operational efficiency

What We’re Looking For

You will be an experienced network engineer who has worked in demanding, high-availability environments where routing stability and performance are critical. Strong practical experience with BGP, OSPF, and multicast networking is essential, alongside confidence working with modern data centre technologies.

Nice to Haves

  • Experience with automation using Python, Ansible, or similar tools
  • Exposure to observability and monitoring platforms
  • Understanding of network security and secure routing design
  • Hands-on experience with Arista and or Cisco in production environments
  • Industry certifications such as CCNP or CCIE

This is an opportunity to join an organisation where network engineering directly supports mission-critical systems. If you are motivated by technical ownership, complex routing challenges, and long-term impact, we would welcome a confidential conversation.

Senior Core Network Engineer employer: Ncounter Technology Recruitment

Ncounter is an exceptional employer, offering a dynamic work environment in the heart of London with hybrid working options that promote work-life balance. Employees benefit from a culture of innovation and collaboration, with ample opportunities for professional growth and development in the fast-paced financial services sector. Joining our team means being part of a mission-critical infrastructure role that directly impacts global markets, allowing you to tackle complex challenges while advancing your career in a supportive and forward-thinking organisation.
Ncounter Technology Recruitment

Contact Detail:

Ncounter Technology Recruitment Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Senior Core Network Engineer

✨Tip Number 1

Network with industry professionals! Attend meetups or webinars related to network engineering. It’s a great way to connect with potential employers and learn about job openings that might not be advertised.

✨Tip Number 2

Showcase your skills through personal projects or contributions to open-source. This demonstrates your hands-on experience with BGP, OSPF, and multicast networking, making you stand out to hiring managers.

✨Tip Number 3

Prepare for technical interviews by brushing up on your knowledge of network architectures and troubleshooting techniques. Practice explaining complex concepts clearly, as communication is key in these roles.

✨Tip Number 4

Don’t forget to apply through our website! We’re always looking for talented individuals like you, and applying directly can sometimes give you an edge over other candidates.

We think you need these skills to ace Senior Core Network Engineer

Network Architecture Design
BGP
OSPF
Multicast Networking
Routing Stability
High-Availability Environments
Network Troubleshooting
Network Change Management
Operational Efficiency
Data Centre Technologies
Automation (Python, Ansible)
Network Security
Secure Routing Design
Hands-on Experience with Arista and Cisco
Industry Certifications (CCNP, CCIE)

Some tips for your application 🫡

Tailor Your CV: Make sure your CV highlights your experience with BGP, OSPF, and multicast networking. We want to see how your skills align with the key responsibilities mentioned in the job description.

Craft a Compelling Cover Letter: Use your cover letter to tell us why you're passionate about network engineering and how you can contribute to our mission-critical systems. Be specific about your past experiences and achievements!

Showcase Your Technical Skills: Don’t forget to mention any relevant certifications like CCNP or CCIE, and any hands-on experience with Arista or Cisco. We love seeing practical examples of your expertise!

Apply Through Our Website: For the best chance of success, make sure to apply through our website. It helps us keep track of your application and ensures you’re considered for this exciting opportunity!

How to prepare for a job interview at Ncounter Technology Recruitment

✨Know Your Networking Fundamentals

Brush up on your knowledge of BGP, OSPF, and multicast networking. Be ready to discuss how you've applied these in real-world scenarios, especially in high-availability environments. This will show that you not only understand the theory but can also implement it effectively.

✨Demonstrate Problem-Solving Skills

Prepare to share specific examples of complex network incidents you've resolved. Highlight your thought process and the steps you took to troubleshoot and optimise network performance. This will illustrate your capability as a senior escalation point.

✨Showcase Your Design Experience

Be ready to talk about your experience designing resilient network architectures. Discuss any projects where you translated technical requirements into robust designs, and how you ensured operational efficiency. This is key for the role!

✨Familiarise Yourself with Automation Tools

If you have experience with automation tools like Python or Ansible, make sure to mention it. Even if it's not a core requirement, showing that you're keen on modernising network operations can set you apart from other candidates.

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