Networking Managed Services Engineer (L1)

Nttlimited; Johannesburg; On-site; ZAR 420,000 - 600,000; Full time

Job summary

NTT DATA is seeking a proactive Network Engineer in Johannesburg to monitor and manage client networks, ensuring high availability and performance. You will investigate incidents, perform root-cause analysis, and contribute to remediation efforts while following change management processes.

The role requires solid networking fundamentals, experience with Cisco/Aruba/Meraki environments, and familiarity with monitoring and ticketing tools.

Qualifications

• Diploma/degree in IT or related field.
• CCNA Enterprise or equivalent qualification.
• Solid networking fundamentals and security best practices.
• Experience with monitoring, incident response, and ticketing systems.

Responsibilities

• Monitor client network infrastructure for availability and performance.
• Identify, investigate, and resolve Level 1 incidents within SLAs.
• Escalate incidents and risks to appropriate teams as needed.
• Perform root cause analysis and contribute to prevention initiatives.
• Provide telephonic, chat, and ticket-based support.
• Perform routine maintenance and configuration changes.
• Troubleshoot WAN/LAN/SD-WAN connectivity and security controls.
• Maintain network documentation, diagrams and standards.
• Participate in network deployments and project activities.

Skills

OS I & TCP/IP

IP addressing

VLANs & switching

Routing (OSPF/EIGRP)

NAT

SNMP

Firewall concepts

SD-WAN

VPN technologies

Cisco tech

Aruba/Meraki

Security principles

Monitoring tools

ServiceNow

LogicMonitor

Grafana

Ansible

Python basics

Infoblox

Education

Diploma/Degree in IT

CCNA Enterprise

Tools

Cisco devices

Aruba/Meraki

Fortinet/Palo Alto

SD-WAN

VPN (SSL)

LogicMonitor

NetScout

Prometheus

Grafana

ServiceNow

Ansible

Python

Linux

Infoblox

Job description

Make an impact with NTT DATA

Join a company that is pushing the boundaries of what is possible. We are renowned for our technical excellence and leading innovations, and for making a difference to our clients and society. Our workplace embraces diversity and inclusion - it's a place where you can grow, belong and thrive.

Your day at NTT DATA

Key Responsibilities

• Monitor client network infrastructure, systems, and services to ensure availability and performance.
• Identify, investigate, troubleshoot, and resolve Level 1 incidents and service requests within agreed SLAs.
• Escalate incidents, risks, and unresolved issues to appropriate support teams when required.
• Perform root cause analysis for incidents and contribute to incident prevention initiatives.
• Fulfil approved service requests and execute routine operational tasks according to documented procedures.
• Provide telephonic, chat, and ticket-based support to customers and internal stakeholders.
• Execute approved maintenance activities, including software patching, configuration changes, and system updates.
• Follow established change management processes and procedures.
• Perform troubleshooting across WAN, LAN, wireless, SD-WAN, and inter-site connectivity environments.
• Support the implementation, configuration, and maintenance of network infrastructure and security controls.
• Assist in maintaining network security standards, identifying vulnerabilities, and supporting remediation activities.
• Ensure network devices, systems, and services remain secure, operational, and compliant with organisational standards.
• Contribute to the maintenance of network documentation, diagrams, standards, procedures, and knowledge articles.
• Monitor network performance and utilise management and monitoring tools to proactively identify issues and improvement opportunities.
• Identify opportunities for operational efficiency, automation, process optimisation, and incident reduction.
• Participate in shift handovers and maintain accurate operational records to ensure service continuity.
• Assist with disaster recovery activities, testing, and business continuity requirements where applicable.
• Contribute to project-related activities and network deployments as required.
• Perform other duties as reasonably required within the scope of the role.

Required Technical Knowledge & Skills

Networking Fundamentals

• Solid understanding of: OSI Model and TCP/IP protocol suite.
• IP addressing, subnetting, routing concepts, and network segmentation.
• Layer 2 switching technologies, VLANs, access ports, trunking, and access control lists.
• Routing protocols including OSPF, EIGRP, and basic BGP concepts.
• Network Address Translation (NAT).
• SNMP and network management principles.
• Traffic filtering using access lists and route maps.
• Enterprise network architecture concepts.

Network Technologies

• Basic knowledge and experience configuring, monitoring, and troubleshooting: Cisco switching and routing platforms.
• Aruba and Meraki switching and wireless solutions.
• Fortinet, Palo Alto, Cisco, or similar firewall technologies.
• Enterprise wireless networking technologies.
• SD-WAN technologies (Fortinet, Cisco, Meraki, or similar).
• ISP connectivity solutions, including DIA, MPLS, and point-to-point circuits.
• VPN technologies, including SSL VPN solutions.

Security & Operations

• Understanding of network security principles, standards, and best practices.
• Ability to identify, assess, and escalate security risks and vulnerabilities.
• Experience securing network devices, switches, and wireless infrastructure.
• Understanding of network monitoring, alerting, and management tools.

Tools & Platforms

• Familiarity with: Service management and ticketing systems (ServiceNow, 4Me/Xurrent, or similar).
• Network monitoring platforms such as LogicMonitor, NetScout, Prometheus, Grafana, or equivalent.
• SecureCRT and related administration tools.
• Linux operating systems and basic shell scripting (advantageous).
• Ansible and Python for automation (advantageous).
• Infoblox (advantageous).

Behavioural Competencies

• Excellent customer service and client engagement skills.
• Strong verbal and written communication skills.
• Ability to work effectively across diverse cultures, teams, and stakeholder groups.
• Strong analytical and problem-solving abilities.
• Ability to apply active listening techniques and gather accurate information.
• Ability to prioritize workload and remain effective under pressure.
• Proactive, adaptable, and willing to learn new technologies.
• Ability to work independently while contributing to a team environment.
• Strong attention to detail and commitment to high-quality service delivery.
• Positive attitude with a customer-first mindset.
• Ability to plan, organize, and manage tasks effectively in a changing environment.

Qualifications & Certifications

Essential

• Diploma, Degree, or equivalent qualification in Information Technology, Computer Science, Networking, or a related field (or equivalent practical experience).
• CCNA Enterprise (or equivalen