Senior Network Engineer

Techolony Limited; London; Hybrid; GBP 60,000 - 100,000; Full time

Job summary

Join a forward-thinking consultancy as a Senior Network Engineer, where you'll be at the forefront of cutting-edge data centre projects. This role offers the chance to work with advanced network technologies, ensuring optimal performance and reliability in ultra-low latency environments. You'll collaborate with a dynamic team, delivering innovative WAN and cloud solutions across various sectors. Enjoy a competitive salary, comprehensive benefits, and opportunities for professional growth, including access to training and certifications. Embrace a culture of diversity and inclusion while making a significant impact in the tech industry.

Benefits

23 days' annual leave

Comprehensive private healthcare

Dental insurance

Company pension scheme

Salary sacrifice schemes

Free access to labs and training

Regular team events

Participation in EMI share scheme

Qualifications

• Hands-on experience with Cisco devices and WAN technologies.
• Strong understanding of low-latency networking and critical environments.

Responsibilities

• Building and configuring data centre network technologies.
• Delivering global WAN and cloud connectivity solutions.
• Troubleshooting and configuring multicast networking.

Skills

BGP routing protocols

Cisco IOS-XR

Cisco NXOS

Ansible

Python

Golang

Jenkins

Terraform

Wireshark

low-latency networking

Education

CCNP certification or above

Tools

packet capture tools

optical taps

SPAN

aggregation platforms

Job description

Our SmartHire team is looking for a Senior Network Engineer to join a leading IT services and consulting company, supporting a major data centre implementation project.

This position is based in Central London, requiring up to four days a week onsite. It's a fantastic opportunity to become part of a consultancy that champions technical excellence, innovation, and continuous learning, delivering projects across sectors like finance, broadcast media, and telecommunications.

What You ll Be Doing:

• Building and configuring cutting-edge data centre network technologies.
• Delivering global WAN and cloud connectivity solutions.
• Working on ultra-low latency network environments, including Layer 1 switching.
• Setting up and maintaining precise timing systems (GPS, PTP, NTP, PPS).
• Installing packet capture tools using optical taps, SPAN, and aggregation platforms.
• Analysing network traffic with Wireshark to ensure performance and reliability.
• Managing connections for market data feeds and order entry across exchange colocation sites.
• Troubleshooting and configuring multicast networking.
• Using automation frameworks like Git, Python, Golang, Jenkins, Terraform, and Ansible for efficient deployment and management.

What You ll Need:

• Industry certifications at CCNP level or above.
• Deep understanding of BGP routing protocols and WAN technologies.
• Experience working hands-on with Cisco IOS-XR, Cisco NXOS, and/or Arista EOS devices.
• Strong background in low-latency networking, ideally supporting critical environments.
• Proven ability to deliver new WAN circuits and manage seamless migrations.
• Familiarity with automated deployment and network operations using Ansible and Python.
• Previous exposure to trading networks, market data infrastructure, or exchange connectivity would be highly beneficial.

What s On Offer:

• A competitive base salary plus a discretionary bonus.
• 23 days' annual leave, in addition to bank holidays.
• Comprehensive private healthcare and dental insurance.
• Access to a company pension scheme.
• Salary sacrifice schemes covering EV cars, workplace nursery, cycling, and tech purchases.
• Free, unlimited access to labs, training, and certifications including CCNP, CCIE, Python, Cloud technologies, and more.
• Regular team events and social activities to keep connected.
• Participation in an EMI share scheme offering long-term growth incentives.

Diversity and Inclusion:

The company is proud to promote an inclusive and diverse workplace and warmly welcomes applicants from all backgrounds. If you require any adjustments during the application or interview process, the SmartHire team is available to support you.