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# Senior Juniper Network Architect

- **Company:** Juniper Networks
- **Location:** London, UK
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** IEEE 802.1Q, Border Gateway Protocol, Data Centers, Ethernet, Virtual Private LAN Services, Internet Protocol, Internet Protocol Security (IP SEC), IPv4, IPv6, Multi-protocol Systems, Junos, Python (Programming Language), Network Troubleshooting, Network Architecture, Network Planning and Design, Network Information Services, Routing, Open Shortest Path First (OSPF), Peering, Remote Access Technology, TCP/IP, In-Plane Switching (IPS), Computer Network Technologies, System Availability, Firewalls (Computer Science), Juniper
- **Published:** October 31, 2026
- **Apply:** https://www.apply4u.co.uk/jobs/senior-juniper-network-architect/54375744

## About the Role

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

## Description

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.