Senior Network Engineer/Architect – Campus, Data Center & Security

Applied Materials • Toronto, ON

2d • Onsite

About The Position

Applied Materials' IT organization is seeking a Senior Network Engineer/Architect with deep expertise across WAN, LAN, Datacenter, SD-WAN, Private 5G, and Sensor/IIoT connectivity to design, implement, and operate secure, resilient, and scalable enterprise network infrastructure. This role is hands-on and highly technical, with responsibility for architecture, engineering, lifecycle management, automation, and operational excellence across campus, data center, manufacturing, OT, R&D, and cloud-connected environments. The Senior Network Engineer/Architect partners closely with security, cloud, OT, and application teams to deliver reliable connectivity aligned with business priorities.

Requirements

• Bachelor’s or Diploma degree in Computer Science, Information Technology, Cybersecurity, Engineering, or related field (or equivalent experience).
• 8–12+ years in enterprise network engineering (10+ years preferred).
• Strong hands-on experience with: WAN, SD-WAN, LAN, WLAN (preferred/strongly desired)
• Manufacturing/OT networks or large campus environments
• Hybrid environments with public cloud connectivity (Azure and/or AWS)
• Firewalls, VPN / ZTNA
• Private 5G and Sensors / IIoT connectivity
• WAN/SD-WAN: BGP, OSPF, MPLS, DIA, cloud interconnects, traffic steering, QoS
• LAN/WLAN: Switching, VLANs, redundancy models, RF design, wireless troubleshooting
• Security: Firewalls, VPN, segmentation, NAC/802.1X, policy validation
• Data Center: Leaf-Spine L2/L3 designs; Arista/Cisco DC networking
• Monitoring/Telemetry/Troubleshooting tools; capacity planning
• High availability, redundancy, performance optimization
• Automation exposure: scripting and/or IaC concepts
• Mandatory: CCIE / CCNP / CCDP (Routing & Switching, Security, Data Center, or Service Provider)
• Interprets internal/external business issues and recommends best practices; solves complex problems with a broad perspective to identify innovative solutions.
• Works independently with guidance in only the most complex situations.
• Requires specialized depth of expertise in networking and security technologies.
• Proven design/engineering excellence across LAN, WAN, Data Center, SD-WAN, NAC, WAN Optimization, Wireless, Firewalls, and advanced networking technologies (10+ years strongly preferred).
• Superior knowledge, skills, and experience with: Arista and Cisco Data Center switches (Leaf-Spine; L2/L3 designs)
• Cisco switching/routing platforms and protocols
• Aruba products (campus switching and orchestration)
• SDWAN technologies (eg: Arista Velocloud)
• Palo Alto firewalls and advanced network security solutions
• Excellent knowledge/experience with networking technologies: Ethernet, ATM, MPLS, OSPF, IPsec, VLANs, HSRP, PPP, EIGRP, BGP, QoS, Multicast, ACLs, VPNs
• Experience using network management tools for performance tuning, troubleshooting, and capacity planning
• Working knowledge of security technologies and concepts
• Knowledge of voice infrastructure: IP Telephony, Telepresence
• Knowledge of scripting/automation tools and exposure to deploying automation toolsets for network & security
• Strong communication, influencing, stakeholder management, and technical leadership skills

Nice To Haves

• Aruba or SDWAN Certifications
• Azure certification (networking a plus)
• Palo Alto certification (PCNSE/PCNSA a plus)

Responsibilities

• Design, implement, and support enterprise WAN, LAN, Data Center, WLAN, SD-WAN, firewall, and Private 5G solutions.
• Lead detailed network designs for campus, data center, manufacturing, OT, and R&D environments.
• Develop and maintain High-Level Design (HLD), Low-Level Design (LLD), traffic flows, implementation guides, and standards-based documentation.
• Ensure solutions meet requirements for scalability, resilience, performance, and security.
• Contribute to reference architectures and standardized network patterns.
• Design and deploy campus/building LANs (switching, VLANs, routing, redundancy models).
• Engineer enterprise Wi-Fi solutions: RF design, capacity planning, performance optimization.
• Troubleshoot complex wired/wireless issues using packet captures, telemetry, and logs.
• Support NAC, 802.1X, and identity-based access integrations.
• Engineer and operate global WAN and SD-WAN deployments (internet, MPLS, DIA, cloud connectivity).
• Optimize routing, traffic steering, QoS, and application performance.
• Support segmentation, redundancy, failover, and high-availability designs.
• Work with service providers and vendors on circuit provisioning, troubleshooting, and optimization.
• Design, implement, and support OT, 5G and sensor network connectivity for manufacturing, industrial, and R&D environments.
• Implement segmentation and security controls to isolate OT systems, sensor networks, and IT workloads while enabling controlled data exchange.
• Collaborate with OT/manufacturing/security teams to align network design with safety, production continuity, and compliance requirements.
• Integrate Private 5G with existing LAN/WLAN/SD-WAN/WAN for seamless end-to-end connectivity.
• Engineer secure, scalable connectivity for PLCs, sensors (IIoT), robots, vision systems, IoT platforms, and industrial devices.
• Support deterministic/high-availability designs to meet low latency, high reliability, and real-time traffic requirements.
• Configure and support firewalls, VPNs, ZTNA, and secure connectivity in partnership with security teams.
• Implement segmentation, access controls, and secure routing architectures.
• Participate in firewall policy design reviews and traffic flow validation.
• Ensure designs align with Zero Trust and defense-in-depth principles.
• Actively contribute to periodic rule reviews, risk reduction, and compliance alignment (e.g., NIST/CIS).
• Act as a senior technical escalation point for complex network incidents/outages across the globe.
• Perform root cause analysis and implement corrective and preventive actions.
• Support changes, upgrades, and maintenance with minimal disruption.
• Participate in on-call or escalation rotations as required.
• Work closely with operations teams to ensure smooth transition from engineering to sustaining operations.
• Develop and maintain network standards, templates, and configuration baselines.
• Drive automation using scripting and infrastructure-as-code approaches where applicable.
• Reduce operational debt through simplification, standardization, and lifecycle management.
• Track and improve network performance, availability, and operational metrics.
• Work closely with Network Security, Cloud, OT, Application, and Infrastructure teams.
• Support project planning, technical assessments, implementation timelines, and design reviews.
• Clearly communicate technical issues, risks, and recommendations to stakeholders.
• Own end-to-end budgeting and financial governance for network products, including annual OPEX/CAPEX planning and funding approvals.
• Manage renewals and vendor contracts; drive cost optimization and negotiate savings across platforms/services.
• Lead project intake cost modeling, including resource costing, design/engineering estimates, and financial impact assessments.
• Perform analytical, technical, and cost analysis to support planning, design, installation, and ongoing administration of enterprise networks.

Benefits

• Supportive work culture that encourages learning, development, and career growth.
• Opportunities to take on challenges and drive innovative solutions.
• Empowerment to push boundaries and learn every day in a supportive leading global company.
• Programs and support that encourage personal and professional growth and care for employees at work, at home, or wherever they may go.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: Associate degree