L3 Network Engineer

WE ARE HIRING A NETWORK ENGINEER (LEVEL 3) – UK!

Excis is a global IT support organization driven by innovation, collaboration, and a commitment to delivering exceptional service worldwide.

With operations across 190+ countries, a network of 6,000+ engineers, and partnerships with 200+ enterprise clients, we provide a dynamic and supportive environment where employees can grow, contribute, and make an impact.

At Excis, we believe in a people-first culture where individual achievements fuel team success. Join our international team and play a key role in maintaining reliable, secure, and high-performing network operations across two UK data centers.

Key Responsibilities:

• Monitor network performance, maintain high availability, and ensure the reliability and security of network infrastructure.

• Install, configure, troubleshoot, and maintain routers, switches, firewalls, and wireless access points.

• Manage and troubleshoot LAN, WAN, VPN, and wireless connectivity.

• Provide advanced technical support for complex network incidents, including root cause analysis and resolution.

• Support day-to-day operations of Cisco ACI, Cisco Nexus 9K/3K switches, data center fabrics, tenants, and VRFs.

• Provide operational support for Azure networking, ExpressRoute, and VPN connectivity.

• Administer and support A10 load balancers, Cisco ISE, remote access policies, and certificate lifecycle management.

• Monitor and maintain core network services, including DNS, DHCP, and secure file transfer.

• Maintain network configurations, technical documentation, and change records.

• Operate and maintain existing network automation tools and assets, including Terraform, Ansible, and Git.

• Act as the escalation point for Level 1 and Level 2 engineers and coordinate with OEM vendors and Ampito teams during major incidents.

• Implement approved network changes in accordance with customer governance and change management procedures.

• Collaborate with cross-functional teams to resolve incidents and improve network performance and security.

• Provide technical guidance to junior engineers and contribute to continuous service improvement.

• Participate in on-call and after-hours support activities when required.

Key Requirements:

• Bachelor's degree in Computer Science, Information Technology, Networking, or a related field, or equivalent hands-on experience.

• 5–8 years of experience in network engineering, network operations, or a related technical role.

• Strong knowledge of network protocols, routing, switching, and network troubleshooting.

• Hands-on experience with Cisco networking technologies, particularly Cisco ACI and Nexus switches, is preferred.

• Experience with Azure networking, ExpressRoute, VPN, and hybrid connectivity.

• Knowledge of A10 load balancers, Cisco ISE, network access control, and certificate management is an advantage.

• Familiarity with DNS, DHCP, secure file transfer, and data center network operations.

• Experience maintaining existing automation tools and repositories using Terraform, Ansible, and Git.

• Strong understanding of network security, performance monitoring, incident management, and root cause analysis.

• Excellent analytical, problem-solving, and communication skills.

• Ability to work independently and collaborate effectively with technical teams, vendors, and stakeholders.

• Willingness to provide occasional onsite support at UK data centers and participate in after-hours support when required.

• Cisco CCNP certification is preferred but not mandatory. CompTIA Network+, Juniper certifications, and relevant Cisco data center, ISE, Azure networking, or automation certifications are also advantageous.

Why Join Us:

At Excis, your work matters. You’ll be part of a dynamic, global IT team where your technical expertise directly supports network reliability, security, and operational excellence. We offer a supportive environment that encourages professional growth, continuous learning, and collaboration across diverse technologies. Enjoy competitive compensation and the opportunity to contribute to a global IT leader that values innovation and excellence.