Networking Managed Services Engineer (L1)

NTT Limited; Johannesburg; On-site; ZAR 420,000 - 620,000; Full time

Job summary

NTT DATA in Johannesburg is seeking an entry- to mid-level Network Engineer to monitor and support client networks, ensuring availability and performance. You will handle Level 1 incidents, perform troubleshooting, and support change and maintenance activities.

You will work with Cisco, Aruba, Fortinet, SD-WAN, and VPN technologies, contribute to security and documentation, and engage in shift handovers. The role offers on-site work in South Africa with opportunities to grow in a global

Qualifications

• Diploma or degree in IT or networking.
• CCNA Enterprise or equivalent certification.
• ITIL Foundation or equivalent.
• CCNP Enterprise is advantageous.
• DevNet Associate or similar networking DevOps cert.
• CWNA or CWNP certifications are beneficial.
• Experience with enterprise networking environments.

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 SLAs.
• Escalate incidents to appropriate support teams when required.
• Perform root cause analysis for incidents and contribute to prevention initiatives.
• Assist in maintenance activities including software patching and config changes.
• Provide multi-channel (phone, chat, ticket) support to customers and stakeholders.
• Maintain network documentation, diagrams, and standards.
• Participate in shift handovers and ensure service continuity.

Skills

OSI model

TCP/IP

Subnetting

WAN/LAN

SSL VPN

Security basics

Education

Diploma/Degree in IT

CCNA Enterprise

ITIL Foundation

CCNP Enterprise

DevNet Associate

CWNA/CWNP certifications

Tools

ServiceNow

LogicMonitor

NetScout

Grafana

Prometheus

Infoblox

Ansible

Python

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.

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.

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.

Innovation and Connectivity

Is innovation part of your DNA? Do you want to enable a connected future for people, organizations, and society? Join our growing global NTT family and you'll be part of the world’s largest ICT company (by revenue). We've combined the capabilities of 28 remarkable companies to become one, leading technology services provider. Together, we help our people, clients, and communities do great things with technology to create a more secure and connected future.

We employ 40,000 people across 57 countries. By bringing together the world’s best technology companies and emerging innovators, we work together to deliver sustainable outcomes to businesses and the world. Innovation is part of our DNA. We believe it’s key to what makes us different. So, we strive to move forward, challenge the status quo, and drive excellence through the technologies we integrate and the services we deliver around the world. The result is connected cities, connected factories, connected healthcare, connected agriculture, connected conservation, connected mobility, and connected sport. Together we enable the connected future. You'll be joining a global employer that is committed to attracting, growing and keeping the best talent. A place where you will be at the heart of our success!