Senior Juniper Network Architect

• Provide day-to-day post-sales operational support for production and pre-production network environments
• Troubleshoot complex hardware, software, and network issues across large-scale IP/MPLS infrastructures
• Open, manage, and drive Juniper JTAC cases to resolution, including root cause analysis and corrective actions
• Support during critical incidents, outages, and escalation scenarios
• Conduct network information-gathering workshops to understand current network architecture, operational workflows, and future design
• Provide guidance on network design evolution, capacity growth, and technology adoption aligned with the roadmap.
• Assist with major network upgrades, maintenance windows, migrations, and change events
• Lead technology and operations workshops to review ongoing issues and JTAC case status and explain root causes, mitigations, and long-term solutions
• Train engineering, implementation, and operations teams on configuration, monitoring and day-to-day operation of Juniper platforms
• Assess network health and stability across Juniper environments.
• Create and review customer SOPs and MOPs to identify procedural gaps that could result in network or service outages
• Develop and maintain automation scripts to reduce operational toil, improve consistency and accuracy, & accelerate troubleshooting
• Write & support Python-based automation tools for configurationThis is an excellent senior technical role that offers a great opportunity to work for a global communications client. The role can be worked hybrid based out of London & falls outside of IR35.

Senior Juniper architect spanning campus, data centre, routing and security; able to own customer design and consulting.

• Experience in supporting major network transformations, upgrades, or expansions.
• 10+ years large-IP network design, implementation and operation.
• Large-scale hands-on experience with: MX, QFX, EX, ACX and PTX platforms
• BGP/OSPF, IS-IS, RSVP-TE/LDP; EVPN/MPLS, VPWS/VPLS and L2/L3VPN.
• Juniper EVPN/VXLAN campus and DC fabrics.
• Strong experience with JUNOS CLI.
• SRX high-end/midrange/branch security; firewall policy, IPS, IPsec and high availability; Mist.
• Expert-level Technical Certifications: JNCIS, JNCIP, JNCIE, CCNP, and CCIE a strong
• Automation experience
• JNCIE highly preferred The right candidate should also have a strong understanding of service provider networking technologies, including:

• TCP/IP & MPLS fundamentals
• Routing protocols: OSPF, IS-IS, BGP
• MPLS-TE, RSVP, LDP
• IPv4/IPv6
• BGP routing policy & peering
• VPN technologies: L3VPN, VPLS, MVPN
• Ethernet switching, 802.1Q
• QoS / Class of Service
• Hands-on Scripting Python & Juniper PyEZ

Role Responsibilities

Our global communications client is looking for a hands-on Senior Architect/Engineer for a highly technical, customer-facing role providing post-sales, on-site technical support for Juniper Networks products/solutions. This role partners closely with our client's Network Engineering, Architecture, and Operations teams to ensure high availability, scalability, and operational excellence across large-scale service provider networks.