Senior Network Architect - Data Center & WAN

Cadence Design Systems; Ireland; On-site; EUR 120,000 - 160,000; Full time

Benefits offered by this job

Competitive salary

25 days holiday

Private Healthcare and Life Insurance

Personal Pension Plan

Cycle to work scheme and gym subsidy

Employee Stock Purchase Plan

Volunteer time off

Job summary

Cadence Design Systems in Ireland seeks a Senior Staff Network Engineer to design, deploy, and operate Cadence’s global enterprise network across data centres, campuses, and WAN. You will lead high-impact initiatives with clear, measurable outcomes, bringing deep technical expertise, operational discipline, and cross-functional collaboration.

You will deliver scalable network solutions, support day-2 operations, and ensure security posture while working with IT and Security teams to translate

Qualifications

• 12–15 years of experience in enterprise network architecture, design, deployment, and operations (data center, campus, WAN and hybrid cloud).
• Bachelor’s degree in Computer Science, Engineering, or a related field.
• Cisco certification required (CCNP preferred; CCIE a strong plus).
• Extensive hands-on experience designing, deploying, and operating enterprise networks across data centre, campus, WAN, and hybrid cloud environments.
• Expert knowledge of routing and switching technologies (e.g. BGP, OSPF, EVPN/VXLAN) and high-availability designs (MLAG/vPC, LACP).
• Strong foundation in network security principles, including segmentation, ACLs, firewall integrations, and secure remote access, with experience partnering closely with Security teams.
• Hands-on experience with NAC/AAA solutions, such as Cisco ISE and/or Aruba ClearPass.
• Proven ability to lead complex troubleshooting, root-cause analysis, and incident response, with disciplined change, risk, and lifecycle management practices.
• Experience designing solutions that are operationally ready, including monitoring, alerting, capacity planning, and documentation.
• Strong communication skills, with the ability to translate technical detail into clear, executive-ready options and recommendations.

Responsibilities

• Design and deliver scalable, resilient data centre and campus network solutions using Cisco, Arista, HPE, and Aruba platforms.
• Support WAN operations including internet edge and SD-WAN integrations, ensuring consistent routing and security posture.
• Lead complex troubleshooting and root-cause analysis; implement preventive changes to reduce incidents and unplanned outages.
• Partner with teams across Data Centre, Storage, Virtualisation, Windows, Unix, Cloud Ops, and Security to provide technical direction and deliver cross-domain initiatives.
• Establish and maintain network documentation, diagrams, standards, and runbooks; ensure designs are supportable and operationally ready.
• Operationalise delivered solutions for Day 2 operations, including monitoring and alerting, capacity planning, lifecycle management, and change/release processes.
• Communicate status, risks, and trade-offs clearly to stakeholders; manage deliverables, timelines, and dependencies across multiple initiatives.

Skills

Network design

Data centre

WAN

Hybrid cloud

Routing & switching

BGP

OSPF

EVPN/VXLAN

Network security

NAC/AAA

Cisco ISE

Aruba ClearPass

Troubleshooting

Change management

Documentation

Communication

Education

Bachelor's degree in Computer Science, Engineering, or a related field

Tools

Cisco

Arista

HPE

Aruba

SD-WAN

F5 Load Balancers

Network automation tools

Job description

Cadence Design Systems in Ireland seeks a Senior Staff Network Engineer to design, deploy, and operate Cadence’s global enterprise network across data centres, campuses, and WAN. You will lead high-impact initiatives with clear, measurable outcomes, bringing deep technical expertise, operational discipline, and cross-functional collaboration.

You will deliver scalable network solutions, support day-2 operations, and ensure security posture while working with IT and Security teams to translate