Senior Data Networking SME | WAN/LAN & SD-WAN

NTT DATA, Inc.; Dublin; On-site; EUR 120,000 - 180,000; Full time

Job summary

NTT DATA, Inc. in Ireland seeks an experienced DATACOM SME to provide technical leadership in enterprise networking and data communication. You will design, implement, optimize, and support complex network infrastructures while ensuring high availability, performance, and security.

The role requires collaboration with infrastructure, security, cloud, and operations teams to deliver reliable networking services and continuous modernization.

Qualifications

• Typically 8+ years of experience in Network Infrastructure, Data Communication, and Enterprise Networking.
• Hands-on expertise with leading network technologies and platforms such as Cisco, Juniper, Aruba, Huawei, Fortinet, or equivalent.
• Strong knowledge of network protocols including TCP/IP, BGP, OSPF, EIGRP, MPLS, DNS, DHCP, and routing/switching concepts.
• Strong understanding of Data Center networking architectures.
• Experience in network monitoring, troubleshooting, and performance optimization.
• Excellent analytical, communication, and stakeholder management skills.
• Ability to lead technical discussions and mentor junior engineers.

Responsibilities

• Design, implement, and maintain enterprise network infrastructure solutions.
• Provide subject matter expertise for LAN, WAN, WLAN, SD-WAN, VPN, and Data Center networking technologies.
• Lead network transformation and modernization initiatives.
• Perform network capacity planning, performance tuning, and optimization.
• Troubleshoot complex network issues and drive root cause analysis.
• Collaborate with Infrastructure, Security, Cloud, and Application teams to ensure seamless connectivity and service delivery.
• Support network security implementations including firewalls, NAC, segmentation, and secure access solutions.
• Develop network architecture, standards, operational procedures, and technical documentation.
• Participate in incident, problem, and change management processes.
• Evaluate new networking technologies and provide recommendations for continuous improvement.

Skills

Data Communication Technologies

Enterprise Networking

LAN / WAN / WLAN

SD-WAN

Routing & Switching

TCP/IP Protocol Suite

BGP, OSPF, EIGRP, MPLS

Cloud Networking (Azure, AWS, GCP)

Network Security

Network Automation (Ansible, Python,  

Education

Tools

Cisco Networking Solutions

Juniper Networks

Aruba Wireless

Ansible

Python

Job description

NTT DATA, Inc. in Ireland seeks an experienced DATACOM SME to provide technical leadership in enterprise networking and data communication. You will design, implement, optimize, and support complex network infrastructures while ensuring high availability, performance, and security.

The role requires collaboration with infrastructure, security, cloud, and operations teams to deliver reliable networking services and continuous modernization.