Senior Network Engineer/Architect

We are seeking a Senior Network Engineer/Architect with deep expertise across WAN, LAN, WLAN, SD\u2011WAN, Private 5G and Sensors technologies to design, implement, and operate secure, resilient, and scalable enterprise network infrastructure.\n\nThis role is hands-on and highly technical, with responsibility for architecture, engineering, lifecycle management, automation, and operational excellence across campus, data center, manufacturing, R\u0026D, and cloud-connected environments.\n\nThe Senior Network Engineer/Architect partners closely with security, cloud, OT, and application teams to deliver reliable connectivity aligned with business priorities.\n\nKey Responsibilities\n\n1\\. Network Engineering \u0026 Architecture\n\n * Design, implement, and support enterprise WAN, LAN, WLAN, SD\u2011WAN, firewall, and Private 5G network solutions.\n * Lead detailed network designs for campus, data center, manufacturing, OT, and R\u0026D environments.\n * Develop and maintain high- and low-level design documentation, traffic flows, and implementation guides.\n * Ensure network solutions meet requirements for scalability, resilience, performance, and security.\n * Contribute to reference architectures and standardized network patterns.\n\n\n\n2\\. LAN \u0026 WLAN Engineering\n\n * Design and deploy campus and building LANs, including switching, VLANs, routing, and redundancy models.\n * Engineer enterprise Wi\u2011Fi solutions focusing on RF design, capacity planning, and performance optimization.\n * Troubleshoot complex wired and wireless issues using packet captures, telemetry, and logs.\n * Support NAC, 802.1X, and identity-based access integrations.\n\n\n\n3\\. WAN / SD\u2011WAN Engineering\n\n * Engineer and operate global WAN and SD\u2011WAN deployments, including internet, MPLS, DIA, and cloud connectivity.\n * Optimize routing, traffic steering, QoS, and application performance.\n * Support segmentation, redundancy, failover, and high-availability designs.\n * Work with service providers and vendors on circuit provisioning, troubleshooting, and optimization.\n\n\n\n4\\. Private 5G, OT \u0026 Sensor Network Engineering\n\n * Design, implement, and support Private 5G, OT, and sensor network connectivity for manufacturing, industrial, and R\u0026D environments.\n * Integrate Private 5G with existing wired (LAN), wireless (WLAN), SD\u2011WAN, and WAN infrastructures to provide seamless and secure end-to-end connectivity.\n * Engineer secure, scalable connectivity for industrial devices, PLCs, sensors (IIoT), robots, vision systems, and IoT platforms.\n * Support deterministic, high-availability network designs to meet low latency, high reliability, and real-time traffic requirements.\n * Implement segmentation and security controls to isolate OT systems, sensor networks, and IT workloads while enabling controlled data exchange.\n * Collaborate with OT, manufacturing, and security teams to align network design with safety, production continuity, and compliance requirements.\n * Ensure ongoing monitoring, performance optimization, and lifecycle management of Private 5G cells, gateways, edge devices, and sensor connectivity.\n\n\n\n5\\. Network Security Integration\n\n * Configure and support firewalls, VPNs, ZTNA, and secure connectivity in partnership with security teams.\n * Implement segmentation, access controls, and secure routing architectures.\n * Participate in firewall policy design reviews and traffic flow validation.\n * Ensure networks align with Zero Trust and defense-in-depth principles.\n\n\n\n6\\. Operations, Troubleshooting \u0026 Incident Escalation Support\n\n * Act as a senior technical escalation point for complex network incidents.\n * Perform root cause analysis and implement corrective and preventive actions.\n * Support network changes, upgrades, and maintenance with minimal disruption.\n * Participate in on-call or escalation rotations as required.\n\n\n\n6\\. Automation, Standards \u0026 Continuous Improvement\n\n * Develop and maintain network standards, templates, and configuration baselines.\n * Drive automation using scripting and infrastructure-as-code approaches where applicable.\n * Reduce operational debt through simplification, standardization, and lifecycle management.\n * Track and improve network performance, availability, and operational metrics.\n\n\n\n7\\. Cross-Functional Collaboration\n\n * Work closely with Network Security, Cloud, OT, Application, and Infrastructure teams.\n * Support project planning, technical assessments, and implementation timelines.\n * Participate in design reviews and architecture discussions.\n * Clearly communicate technical issues, risks, and recommendations to stakeholders.\n\n\n\n8\\. Financials \u0026 Project Management\n\n * Own end to end budgeting and financial governance for network products, including annual OPEX/CAPEX planning and funding approvals.\n * Manage renewals and vendor contracts, driving cost optimization and negotiating savings across all platforms and services.\n * Lead project intake cost modeling, including resource costing, design/engineering estimates, and financial impact assessments.\n\n\n\nQualifications\n\nEducation\n\n * Bachelor\u2019s/Diploma degree in Computer Science, Information Technology, Cybersecurity, Engineering, or related field.\n\n\n\nExperience\n\n * 8\u201312+ years of experience in enterprise network engineering\n * Strong hands-on experience with:\n * WAN, SD\u2011WAN, LAN, WLAN,\n * Firewalls, VPN / ZTNA\n * Sensors \u0026 Private5G\n * Manufacturing, OT, or large campus networks\n * Experience supporting hybrid environments with public cloud connectivity (AWS, Azure)\n\n\n\nSkills\n\n * WAN \u0026 SD\u2011WAN: Routing (BGP, OSPF), MPLS, DIA, cloud interconnects\n * LAN \u0026 WLAN: Switching, VLANs, RF design, wireless troubleshooting\n * Security: Firewalls, VPNs, segmentation, NAC\n * Private 5G: Architecture, integration, and operational support (preferred)\n * Network monitoring, telemetry, and troubleshooting tools\n * Strong understanding of high availability, redundancy, and performance optimization\n\n\n\nSoft Skills\n\n * Strong problem-solving and analytical mindset\n * Ability to work independently on complex technical challenges\n * Clear written and verbal communication skills\n * Collaborative approach across cross-functional teams\n * Operational discipline with attention to detail\n\n\n\nPreferred\n\n * Network Wired/Wireless certifications (CCNP/CCIE, Aruba, Palo Alto etc.)\n * Experience in manufacturing or industrial network environments\n * Familiarity with ITIL, NIST, or enterprise network standards\n\n\n\n## Qualifications\n\n### Education:\n\nBachelor\u0027s Degree\n\n### Skills\n\n### Certifications:\n\n### Languages:\n\n### Years of Experience:\n\n4 - 7 Years\n\n### Work Experience:\n\n## Additional Information\n\n### \n\n### Shift:\n\nDay (Singapore)\n\n### \n\n### Travel:\n\nYes, 10% of the Time\n\n### \n\n### Relocation Eligible:\n\nYes\n\n### Referral Payment Plan:\n\nNone\n\nApplied Materials is an Equal Opportunity Employer committed to diversity in the workplace. All qualified applicants will receive consideration for employment without regard to race, color, national origin, citizenship, ancestry, religion, creed, sex, sexual orientation, gender identity, age, disability, veteran or military status, or any other basis prohibited by law. \n