Networking Managed Services Engineer (L1)

NTT Ltd.; Johannesburg; On-site; ZAR 420,000 - 720,000; Full time

Job summary

NTT DATA is seeking an entry- to mid-level Network Technician in Johannesburg to monitor, troubleshoot, and maintain enterprise network infrastructure. The role requires handling incidents, performing basic root-cause analysis, and contributing to change management for WAN/LAN, SD-WAN, and security controls.

You will work with Cisco/Aruba/Fortinet environments, participate in shift handovers, and support disaster recovery activities as needed.

Qualifications

• Diploma or degree in Information Technology, Computer Science, Networking, or equivalent.
• CCNA Enterprise or equivalent Cisco networking certification.
• ITIL Foundation (ITIL v4 preferred).

Responsibilities

• Monitor client network infrastructure, systems, and services for availability and performance.
• Resolve Level 1 incidents and service requests within SLAs.
• Escalate incidents and risks to appropriate teams when required.
• Perform root cause analysis and contribute to incident prevention.
• Provide multi-channel (phone, chat, ticket) support to customers and internal stakeholders.
• Assist with maintenance tasks: patching, configuration changes, system updates.
• Follow change management processes and procedures.
• Troubleshoot WAN/LAN/wireless/SD-WAN and inter-site connectivity.
• Support network security controls and deployment activities.
• Maintain network documentation and diagrams.

Skills

Networking fundamentals

Security basics

Analytical thinking

Communication skills

Team collaboration

Education

Diploma/ Degree in IT or Networking

CCNA Enterprise

ITIL Foundation

Tools

ServiceNow / 4Me/Xurrent

LogicMonitor / Grafana / Prometheus

VPN/SSL VPN

Linux scripting (basic)

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 elevate 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 equivalent Cisco networking certification).
• ITIL Foundation (ITIL v4 preferred).

Advantageous

• CCNP Enterprise.
• Cisco DevNet Associate.
• Fortinet NSE4.
• Implementing Cisco SD-WAN Solutions (ENSDWI).
• CWNA or CWNP certifications.
• NetScout Certified Fundamentals.
• NetScout nGeniusONE Enterprise Essentials Fundamentals.
• Additional vendor certifications relevant to networking, wireless, security, or managed services environments.

Experience

Essential

• Entry-level networking experience or successful completion of a relevant graduate/internship programme.
• Experience troubleshooting and supporting enterprise network environments within a medium-to-large ICT organisation.
• Basic experience with network monitoring, incident management, and service request fulfilment.

Advantageous

• Experience within a managed services environment.
• Experience deploying or supporting enterprise network solutions.
• Exposure to wireless, security, SD-WAN, data centre, cloud, backup, or infrastructure services.
• Familiarity with vendor support processes for Cisco, Aruba, Fortinet, and related technologies.

Workplace type:

On-site Working

About NTT DATA

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.

Equal Opportunity Employer

NTT DATA is proud to be an Equal Opportunity Employer with a global culture that embraces diversity. We are committed to providing an environment free of unfair discrimination and harassment. We do not discriminate based on age, race, colour, gender, sexual orientation, religion, nationality, disability, pregnancy, marital status, veteran status, or any other protected category. Join our growing global team and accelerate your career with us.