Network Security-L2 (Fortinet)

NTT Ltd.; Mumbai City; On-site; INR 900,000 - 1,500,000; Full time

Job summary

NTT DATA in Mumbai seeks a Network Security Engineer (Fortinet) to design, implement, manage and troubleshoot Fortinet-based security infrastructure, ensuring secure and available network services for clients. You will lead firewall policies, VPNs, IPS, and web filtering while collaborating with cross-functional teams on security enhancements.

The role requires hands-on Fortinet expertise, CCNA certification, and 4+ years in network security, with on-site duties in Mumbai.

Qualifications

• Hands-on experience with Fortinet Security Solutions (FortiGate, FortiAnalyzer, FortiManager, VPN, IPS, Web Filtering).
• Experience in Network Security Administration and Operations.
• Proficient in Firewall Configuration, Management and Troubleshooting.
• VPN Configuration and Support (IPSec/SSL VPN).
• Experience with security incident analysis and resolution.

Responsibilities

• Configure, manage, and troubleshoot Fortinet security devices and network security infrastructure.
• Implement and maintain firewall policies, VPN connectivity, IPS, URL filtering, and other security controls.
• Monitor network security events and respond to security incidents in a timely manner.
• Perform configuration reviews, policy optimization, and compliance checks.
• Troubleshoot complex network and security-related issues.
• Manage and support Cisco Routing & Switching environments.
• Administer Wireless LAN Controllers (WLC) and wireless security configurations.
• Support Cisco ISE for authentication, authorization, and network access control.
• Coordinate with internal teams and stakeholders for security enhancements and network upgrades.
• Create and maintain technical documentation, SOPs, and operational procedures.

Skills

Fortinet Security Solutions FortiGate

Network Security Admin & Ops

Firewall Config & Troubleshooting

Security Policy Management

VPN Config & Support

Incident Analysis & Resolution

Education

Any Graduate

CCNA Certification

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
As a Networking Managed Services Engineer (L2) at NTT DATA, you’ll take on a developing engineering role where your main goal is to ensure our clients’ IT infrastructure and systems remain operational. You’ll achieve this by proactively monitoring, identifying, investigating, and resolving technical incidents and problems. You’ll work closely with our clients and internal teams to ensure that services are restored swiftly, in line with our service level agreements (SLAs).

Your day will revolve around reviewing client requests and tickets, applying your technical expertise to resolve them efficiently and effectively. You’ll be the go-to person for second‑line support, handling incidents and requests of medium complexity. In addition to your daily tasks, you’ll have opportunities to contribute to exciting project work from time to time.

You’ll proactively monitor work queues, execute operational tasks, and update tickets with the actions you’ve taken. Identifying, analysing, and logging issues before they escalated will be a key part of your role. You’ll communicate with other teams and clients to provide support and ensure that changes are executed with clear risk identification and mitigation plans.

As part of the shift handover process, you’ll highlight key tickets and upcoming critical tasks for the next shift. When needed, you’ll elevate tickets to ensure the right focus from our Centres of Excellence (CoE) and other teams. Collaborative with our automation teams, you’ll work on optimizing efforts and automating routine tasks, all while coaching our Service desk and L1 teams in both technical and behavioural skills.

You’ll also establish monitoring for client infrastructure, leading and managing initial client escalations for operational issues. Contributing to the change management process, you’ll log change requests, execute approved maintenance activities, and audit incident and request tickets for quality. Your insights will drive trend analysis reports, identifying tasks suitable for automation to reduce tickets and optimize efforts. You might also support disaster recovery functions and other related tasks as needed.

To thrive in this role, you need to have:

Job Title: Network Security Engineer (Fortinet)

Experience

• Total Experience: 4+ Years
• Relevant Experience: 3+ Years in Network Security

Educational Qualifications

• Any Graduate (Mandatory)
• CCNA Certification (Mandatory)

Job Summary

We are seeking a skilled and experienced Network Security Engineer with strong expertise in Fortinet Security Solutions. The ideal candidate should have hands‑on experience in designing, implementing, managing, and troubleshooting network security infrastructure. The candidate will be responsible for maintaining a secure and highly available network environment while supporting routing, switching, wireless, and access management technologies.

Mandatory Skills

• Strong hands‑on experience with Fortinet Security Solutions (FortiGate, FortiAnalyzer, FortiManager, VPN, IPS, Web Filtering)
• Network Security Administration and Operations
• Firewall Configuration, Management, and Troubleshooting
• Security Policy Management
• VPN Configuration and Support (IPSec/SSL VPN)
• Incident Analysis and Resolution

Secondary Skills

• Routing & Switching (Cisco Environment)
• Wireless LAN Controller (WLC)
• Cisco Identity Services Engine (Cisco ISE)
• LAN/WAN Technologies
• Network Monitoring and Troubleshooting

Key Responsibilities

• Configure, manage, and troubleshoot Fortinet security devices and network security infrastructure.
• Implement and maintain firewall policies, VPN connectivity, IPS, URL filtering, and other security controls.
• Monitor network security events and respond to security incidents in a timely manner.
• Perform configuration reviews, policy optimization, and compliance checks.
• Troubleshoot complex network and security-related issues.
• Manage and support Cisco Routing & Switching environments.
• Administer Wireless LAN Controllers (WLC) and wireless security configurations.
• Support Cisco ISE for authentication, authorization, and network access control.
• Coordinate with internal teams and stakeholders for security enhancements and network upgrades.
• Create and maintain technical documentation, SOPs, and operational procedures.

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.

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