Networking Managed Services Engineer (L3)

Applicable Limited; Johannesburg; Hybrid; ZAR 450,000 - 650,000; Full time

Job summary

NTT is seeking a Networking Managed Services Engineer (L3) based in Johannesburg, focusing on IT security implementation, network design, and risk assessment. The ideal candidate will possess expertise in firewalls, routing protocols, and network technologies, ensuring secure and efficient network operations. Join a leading company dedicated to innovation and client impact.

Qualifications

• Proven experience in network security and incident response preferred.
• Ability to build secure networks for enterprise applications.
• Experience with Cisco and HP support processes.

Responsibilities

• Evaluate and secure IT resources while identifying vulnerabilities.
• Monitor and manage ticketing queues, resolving incidents effectively.
• Provide third-level support, identifying root causes of incidents.

Skills

IT security expertise

Network troubleshooting

Firewalls

Linux skills

Customer service skills

Change management

Education

Diploma or degree in IT/Computing

CCNA Enterprise

Palo Alto Networks Certified Network Security Engineer

ITILv4 or relevant ITIL certification

Tools

Palo Alto SD-WAN

Cisco ISE

Service Now

Job description

Networking Managed Services Engineer (L3)

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.

This role focuses on IT security implementation, network infrastructure design, and risk assessment. It requires expertise in firewalls, routing protocols (BGP, OSPF, EIGRP), and network technologies such as SD-WAN, Fortigate, Cisco, Meraki, and Palo Alto. Strong Linux skills, including shell scripting, are essential.

The responsibilities involve evaluating and securing IT resources, identifying vulnerabilities, developing security policies, and maintaining system documentation. Additional duties include network troubleshooting, traffic filtering, device management (Cisco/Meraki/Aruba), and change management.

A proactive, independent mindset, customer service skills, and the ability to review and refine security policies are crucial. The role also encompasses CAB process participation, monthly reporting, and enterprise-level network design.

Key Responsibilities:

• Proactively monitors and manages the ticketing queues.
• Performs operational tasks to resolve all incidents/requests in a timely manner and within the agreed SLA.
• Updates tickets with resolution tasks performed.
• Identifies, investigates, analyzes issues and errors prior to or when they occur, and log all such incidents in a timely manner.
• Captures all required and relevant information for immediate resolution.
• Provides third level support to all incidents, requests and identifies the root cause of incidents and problems.
• Communicates with other teams and clients for extending support.
• Executes changes with clear identification of risks and mitigation plans to be captured into the change record.
• Escalates all tickets to seek the right focus from CoE and other teams, if needed continue the escalations to management.
• Works closely with automation teams for effort optimization and automating routine tasks.
• Coaches Service Desk L1 and L2 teams for technical and behavioural skills.
• Identifies problems and errors before they impact a client’s service.
• Ensures all changes are carried out with proper change approvals.
• Plans and executes approved maintenance activities.
• May also contribute to / support on project work as and when required.
• May work on implementing and delivering Disaster Recovery functions and tests.
• Performs any other related tasks as required.

Knowledge and Attributes:

• Ability to communicate and work across different cultures and social groups.
• Ability to plan activities and projects well in advance, and takes into account possible changing circumstances.
• Ability to maintain a positive outlook at work.
• Ability to work well in a pressurized environment.
• Ability to work hard and put in longer hours when it is necessary.
• Able to work standby.
• Ability to apply active listening techniques such as paraphrasing the message to confirm understanding, probing for further relevant information, and refraining from interrupting.
• Ability to adapt to changing circumstances.
• Ability to place clients at the forefront of all interactions, understanding their requirements, and creating a positive client experience throughout the total client journey.

Academic Qualifications / Certifications and Experience

• Diploma, degree, or relevant qualification in IT/Computing (or demonstrated equivalent work experience).
• Ability to build secure networks for enterprise applications; to maintain security configurations, troubleshoot problems related to network configuration and outages.
• Experience with network security and incident response preferred.
• CCNA Enterprise.
• CCNP Enterprise - advantageous.
• ITILv4 or relevant ITIL certification (Foundation Level)
• Certified Wireless Network Professional (CWNP) - advantageous
• Certified Wireless Network Expert (CWNE) – advantageous
• Palo Alto Networks Certified Network Security Engineer (required)

Advantageous Skills:

• Knowledge and Experience with Palo Alto SDWAN and Prisma.
• Knowledge of Cisco ISE
• Knowledge of Enterprise Monitoring (LogicMonitor, Solarwinds).
• Familiarity with ticketing tools (Service Now, Remedy).
• Knowledge of Cisco and HP support processes.
• Proven working Knowledge of Cisco, Meraki, Aruba switches and access points support and configuration
• Working Knowledge of ASR and ISR routers
• Working Knowledge of Network address translation
• Working Knowledge in configuring, monitoring and troubleshooting uplinks to ISPs for DIA, MPLS and P2P circuits

Workplace type :

Hybrid Working

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.

This role focuses on IT security implementation, network infrastructure design, and risk assessment. It requires expertise in firewalls, routing protocols (BGP, OSPF, EIGRP), and network technologies such as SD-WAN, Fortigate, Cisco, Meraki, and Palo Alto. Strong Linux skills, including shell scripting, are essential.

The responsibilities involve evaluating and securing IT resources, identifying vulnerabilities, developing security policies, and maintaining system documentation. Additional duties include network troubleshooting, traffic filtering, device management (Cisco/Meraki/Aruba), and change management.

A proactive, independent mindset, customer service skills, and the ability to review and refine security policies are crucial. The role also encompasses CAB process participation, monthly reporting, and enterprise-level network design.

Key Responsibilities:

• Proactively monitors and manages the ticketing queues.
• Performs operational tasks to resolve all incidents/requests in a timely manner and within the agreed SLA.
• Updates tickets with resolution tasks performed.
• Identifies, investigates, analyzes issues and errors prior to or when they occur, and log all such incidents in a timely manner.
• Captures all required and relevant information for immediate resolution.
• Provides third level support to all incidents, requests and identifies the root cause of incidents and problems.
• Communicates with other teams and clients for extending support.
• Executes changes with clear identification of risks and mitigation plans to be captured into the change record.
• Escalates all tickets to seek the right focus from CoE and other teams, if needed continue the escalations to management.
• Works closely with automation teams for effort optimization and automating routine tasks.
• Coaches Service Desk L1 and L2 teams for technical and behavioural skills.
• Identifies problems and errors before they impact a client’s service.
• Ensures all changes are carried out with proper change approvals.
• Plans and executes approved maintenance activities.
• May also contribute to / support on project work as and when required.
• May work on implementing and delivering Disaster Recovery functions and tests.
• Performs any other related tasks as required.

Knowledge and Attributes:

• Ability to communicate and work across different cultures and social groups.
• Ability to plan activities and projects well in advance, and takes into account possible changing circumstances.
• Ability to maintain a positive outlook at work.
• Ability to work well in a pressurized environment.
• Ability to work hard and put in longer hours when it is necessary.
• Able to work standby.
• Ability to apply active listening techniques such as paraphrasing the message to confirm understanding, probing for further relevant information, and refraining from interrupting.
• Ability to adapt to changing circumstances.
• Ability to place clients at the forefront of all interactions, understanding their requirements, and creating a positive client experience throughout the total client journey.

Academic Qualifications / Certifications and Experience

• Diploma, degree, or relevant qualification in IT/Computing (or demonstrated equivalent work experience).
• Ability to build secure networks for enterprise applications; to maintain security configurations, troubleshoot problems related to network configuration and outages.
• Experience with network security and incident response preferred.
• CCNA Enterprise.
• CCNP Enterprise - advantageous.
• ITILv4 or relevant ITIL certification (Foundation Level)
• Certified Wireless Network Professional (CWNP) - advantageous
• Certified Wireless Network Expert (CWNE) – advantageous
• Palo Alto Networks Certified Network Security Engineer (required)

Advantageous Skills:

• Knowledge and Experience with Palo Alto SDWAN and Prisma.
• Knowledge of Cisco ISE
• Knowledge of Enterprise Monitoring (LogicMonitor, Solarwinds).
• Familiarity with ticketing tools (Service Now, Remedy).
• Knowledge of Cisco and HP support processes.
• Proven working Knowledge of Cisco, Meraki, Aruba switches and access points support and configuration
• Working Knowledge of ASR and ISR routers
• Working Knowledge of Network address translation
• Working Knowledge in configuring, monitoring and troubleshooting uplinks to ISPs for DIA, MPLS and P2P circuits

Workplace type :

Hybrid Working

About NTT DATA
NTT DATA is a $30+ billion trusted global innovator of business and technology services. We serve 75% of the Fortune Global 100 and are committed to helping clients innovate, optimize and transform for long-term success. We invest over $3.6 billion each year in R&D to help organizations and society move confidently and sustainably into the digital future. As a Global Top Employer, we have diverse experts in more than 50 countries and a robust partner ecosystem of established and start-up companies. Our services include business and technology consulting, data and artificial intelligence, industry solutions, as well as the development, implementation and management of applications, infrastructure, and connectivity. We are also one of the leading providers of digital and AI infrastructure in the world. NTT DATA is part of NTT Group and headquartered in Tokyo.

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. Apply today.

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