Senior Network Engineer

Senior Network Engineer

Full-Time 60000 - 80000 £ / year (est.) No working from home possible
Viasat

At a Glance

  • Tasks: Design and support enterprise network solutions in cloud and on-prem environments.
  • Company: Join Viasat, a leader in global communication technology.
  • Benefits: Competitive salary, inclusive culture, and opportunities for professional growth.
  • Other info: Fast-paced environment with excellent career advancement opportunities.
  • Why this job: Make a real impact by ensuring secure and reliable network operations.
  • Qualifications: Hands-on experience in network design and security is essential.

The predicted salary is between 60000 - 80000 £ per year.

About us

One team.

Global challenges.

Infinite opportunities.

At Viasat, we’re on a mission to deliver connections with the capacity to change the world.

For more than 35 years, Viasat has helped shape how consumers, businesses, governments and militaries around the globe communicate.

We’re looking for people who think big, act fearlessly, and create an inclusive environment that drives positive impact to join our team.

What you'll do

As a Senior Network Engineer, your primary goal is to ensure the reliable, secure, and scalable operation of enterprise network infrastructure across both on‑premises and cloud environments.

You will be part of a team responsible for network architecture, deployment, and operational readiness.

You will play a key role in ensuring connectivity solutions align with performance, security, and availability requirements.

The ideal candidate combines deep networking expertise with practical experience in cloud networking, compute platforms, and enterprise infrastructure.

Success in this role requires deep technical leadership, disciplined execution, and the ability to partner effectively across infrastructure, security, and application teams.

This is a site‑based role; employees work 3+ days (60%+) per week from a Viasat office or work location within a standard five‑day workweek.

  • The day-to-day
  • Design, implement, and support enterprise network solutions across on‑prem and cloud environments (e. g., AWS, Azure, GCP).
  • Deploy and maintain network technologies including routing, switching, wireless, firewalls, and secure remote access solutions.
  • Lead network architecture decisions with a focus on scalability, resiliency, and security (high availability, redundancy, segmentation).
  • Implement and enforce network security controls including segmentation, zero trust principles, and secure access patterns.
  • Support hybrid connectivity models (site‑to‑site VPN, client VPN, Express Route, Direct Connect, SD‑WAN).
  • Monitor network performance and reliability using observability and telemetry tools; proactively address capacity and performance issues.
  • Troubleshoot complex network and cross‑domain infrastructure issues spanning network, compute, and cloud layers.
  • Develop and maintain accurate documentation including network diagrams, IP address management (IPAM), standards, and runbooks.
  • Partner with security teams on vulnerability remediation, incident response, and compliance requirements.
  • Coordinate with vendors, ISPs, and internal stakeholders for circuit delivery, installations, and issue resolution.
  • Contribute to automation efforts for network provisioning, configuration management, and operational tasks.
  • Participate in on‑call rotation and support critical incidents and maintenance windows as needed.
  • What you'll need
  • Strong, demonstrable hands‑on experience designing, implementing, and supporting enterprise network environments.
  • Strong expertise in network security, including firewalls, segmentation, encryption (IPsec/TLS), secure remote access, and intrusion detection/prevention systems.
  • Deep knowledge of routing and switching technologies (e. g., Cisco, Aruba, Juniper, Meraki).
  • Solid understanding of core networking protocols: TCP/IP, DNS, DHCP, BGP, OSPF, VLANs, VPNs, NAT.
  • Experience with hybrid cloud networking and cloud‑native network constructs (VPC/VNet design, routing, security groups, load balancers).
  • Experience with SD‑WAN architectures and implementations.
  • Familiarity with network monitoring, logging, and observability tools (e. g., SNMP, Net Flow, Syslog, modern NPM tools).
  • Working knowledge of compute platforms and operating systems (Windows, Linux, virtualization such as VMware/Hyper‑V).
  • Strong fixing and root cause analysis skills across network and infrastructure layers.
  • Experience with high availability design, failover strategies, and disaster recovery planning.
  • Excellent communication, documentation, and multi‑functional collaboration skills.
  • Ability to travel to office or data center locations for deployments as needed.
  • Participation in after‑hours maintenance, cutovers, and incident response.
  • Operates in a fast‑paced environment requiring adaptability, ownership, and good attention to detail.
  • What will help you on the job
  • Experience implementing zero trust or modern network security architectures (ZTNA, SASE, SSE).
  • Familiarity with infrastructure‑as‑code and network automation (Python, Ansible, Terraform, Power Shell).
  • Experience with cloud‑native firewalls, WAFs, and edge security platforms.
  • Ability to read and interpret structured cabling diagrams and construction documentation.
  • Experience working with ISPs and managing circuit delivery (fiber, MPLS, broadband, LTE/5G).
  • Experience with compliance frameworks (e. g., NIST, CMMC, SOC 2) and secure design practices.
  • Relevant certifications (e. g., CCNP/CCIE, JNCIS/JNCIP, AWS/Azure Networking Specialty, CWNA).
  • Experience supporting enterprise office environments, including wireless design and conference room/AV systems.

EEO Statement

Viasat is proud to be an equal opportunity employer, seeking to create a welcoming and diverse environment.

All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, ancestry, physical or mental disability, medical condition, marital status, genetics, age, or veteran status or any other applicable legally protected status or characteristic.

If you would like to request an accommodation on the basis of disability for completing this online application, please click here.

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Senior Network Engineer employer: Viasat

Viasat is an excellent employer that fosters a dynamic work culture, encouraging collaboration and innovation among its employees. With a strong focus on professional development, the company offers numerous growth opportunities within the corporate real estate sector, particularly in the vibrant EMEA and APAC regions. Employees benefit from a supportive environment that values their contributions and promotes a healthy work-life balance, making it a rewarding place to build a meaningful career.

Viasat

Contact Details:

Viasat Recruitment Team

We think you need these skills to ace Senior Network Engineer

Network Architecture
Cloud Networking
Routing and Switching Technologies
Network Security
Firewalls
VPNs
SD-WAN