L3 Network Architect (Cisco) (m​/w​/d

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We are seeking an experienced L3 Network Architect (Cisco) to provide technical leadership and architecture governance for enterprise network environments. The role is responsible for designing and evolving resilient network architectures, defining operational standards, supporting complex escalations, and ensuring network services remain secure, scalable, highly available, and aligned with business and infrastructure requirements.

• Design, implement, and govern enterprise L2/L3 network architectures.
• Define and maintain network standards for BGP, OSPF, EVPN/VXLAN, high availability, and SDN-integrated environments.
• Provide architectural guidance for data center, cloud-connected, and hybrid network infrastructures.
• Lead complex network troubleshooting, root cause analysis, and major incident resolution activities.
• Develop resilient network design patterns and operational frameworks for implementation and support teams.
• Support and optimize Cisco Nexus switching environments and Perle IOLAN console server infrastructure.
• Review network performance, scalability, resilience, and capacity requirements.
• Collaborate with security, cloud, compute, and storage teams to ensure end-to-end infrastructure integration.
• Maintain architecture documentation, standards, governance processes, and best practices.

• Extensive experience designing and supporting enterprise and data center network infrastructures.
• Deep expertise in Cisco networking technologies, including routing, switching, and high-availability architectures.
• Strong knowledge of BGP, OSPF, EVPN/VXLAN, SDN technologies, and modern network design principles.
• Experience with Cisco Nexus platforms and data center networking environments.
• Familiarity with Perle IOLAN console server solutions and operational management practices.
• Proven ability to lead complex technical escalations and architecture engagements.
• Strong analytical, communication, and stakeholder management skills.

• Cisco CCIE Enterprise Infrastructure
• Cisco CCIE Data Center
• Cisco Nexus and Data Center specialist certifications
• Additional Security, Network, Storage, or Compute infrastructure certifications are advantageous

• German language proficiency at minimum B2 level is mandatory.
• The role requires the ability to participate in technical discussions, incident coordination, service reviews, change management activities, and day-to-day communication with German-speaking stakeholders, customer teams, operational contacts, and site personnel.

• Applicants must hold Swiss citizenship.

• Winterthur area, Switzerland
• Candidates should be based in, or regularly available within the Winterthur region to support local operational alignment, customer engagement, coordination with onsite and remote-hands teams, and participation in governance, escalation, architecture, and service review meetings as required.

NTT DATA is a $30+ billion business and technology services leader, serving 75% of the Fortune Global 100. We are committed to accelerating client success and positively impacting society through responsible innovation. We are one of the world’s leading AI and digital infrastructure providers, with unmatched capabilities in enterprise-scale AI, cloud, security, connectivity, data centers and application services. Our consulting and industry solutions help organizations and society move confidently and sustainably into the digital future.

As a Global Top Employer, we have experts in more than 70 countries. We also offer clients access to a robust ecosystem of innovation centers as well as established and start-up partners. NTT DATA is part of NTT Group, which invests over $3 billion each year in R&D.

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