DATACOM SME; Data Communication Subject Matter Expert

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Date: Sep 30, 2026

Location: London, LND, GB

Company: NTT DATA Services

Competitive salary | UK and/or other European countries:
Fully remote possible

At NTT DATA, we know that with the right people on board, anything is possible. The quality, integrity, and commitment of our employees are key factors in our company’s growth, market presence and our ability to help our clients stay a step ahead of the competition. By hiring the best people and helping them grow both professionally and personally, we ensure a bright future for NTT DATA and for the people who work here.

NTT DATA is currently looking for a DATACOM SME (Data Communication Subject Matter Expert; all genders) remote for our growing team in the UK and/or other European countries.

We are seeking an experienced
DATACOM SME (Data Communication Subject Matter Expert) to provide technical leadership and expertise in enterprise networking and data communication technologies. The ideal candidate will be responsible for designing, implementing, optimizing, and supporting complex network infrastructures while ensuring high availability, performance, scalability, and security. The role requires close collaboration with infrastructure, security, cloud, and operations teams to deliver reliable and efficient networking services.

• 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.

• Typically 8+ years of experience in Network Infrastructure, Data Communication, and Enterprise Networking.
• Strong experience in designing, implementing, managing, and troubleshooting large-scale enterprise network environments.
• Experience supporting LAN, WAN, SD-WAN, VPN, Wireless Networking, Network Security technologies, Data Center, and Cloud Connectivity solutions.
• 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.
• Knowledge of network redundancy, high availability, and disaster recovery concepts.
• Excellent analytical, communication, and stakeholder management skills.
• Ability to lead technical discussions and mentor junior engineers.

• Cisco Certifications (CCNP, CCIE) or equivalent networking certifications.
• Juniper (JNCIP/JNCIE), Aruba, Fortinet, or Huawei certifications.
• Experience with Cloud Networking including Azure, AWS, and Google Cloud Platform.
• Knowledge of Network Automation tools such as Ansible, Python, Terraform, or similar technologies.
• Understanding of Network Security frameworks and Zero Trust principles.
• ITIL Foundation…