Cyber Security & Network Security Engineer

Make an impact with NTT DATAJoin 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 Cyber Security & Network Security Engineer at NTT DATA, you’ll be at the center of designing, implementing, and safeguarding secure network infrastructures. Your day will involve proactively strengthening our defenses against cyber threats, ensuring compliance with leading security standards, and enhancing the organization’s overall security posture.

You’ll work across LAN, WAN, VPN, cloud, and hybrid environments—making sure every layer of the network is properly architected, secured, configured, and tested from end to end. Part of your daily routine will include continuously monitoring systems and networks for security breaches or suspicious activity, leveraging advanced tools and best practices to keep environments resilient.

Every day, you’ll dive into incident response activities, performing deep root‑cause analysis and implementing remediation measures to prevent recurrence. You’ll configure and manage firewalls, IDS/IPS, WAFs, endpoint security platforms, and other critical protective technologies. You’ll support ongoing vulnerability assessments, penetration testing, and risk analysis to identify gaps and strengthen security controls.

A key part of your work will be implementing and upholding security best practices—including frameworks such as ISO 27001, NIST, and CIS—while collaborating with IT, DevOps, and application teams to embed security by design into all technical initiatives. You’ll maintain meticulous documentation, support audit and compliance requirements, and ensure our security processes remain transparent and scalable.

As an experienced security professional, you’ll stay current with emerging threats, technologies, and tools, continuously recommending improvements to elevate our security posture. Whether securing cloud workloads, contributing to automation initiatives, or optimizing how we defend our infrastructure, your expertise will play a critical role in protecting our clients and systems.

To thrive in this role, you need to have:

• A bachelor’s degree in Computer Science, Cyber Security, or equivalent experience.
• Strong understanding of networking fundamentals including TCP/IP, DNS, routing, and switching.
• Hands‑on experience with firewalls, VPNs, and network security tools.
• Experience working with SIEM platforms such as Splunk, QRadar, or Microsoft Sentinel.
• Familiarity with vulnerability scanning and security testing tools.
• Solid understanding of cloud and container security concepts.
• Strong troubleshooting, analytical thinking, and problem‑solving abilities.

Workplace type:

On-site Working

About NTT DATANTT 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 50 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 EmployerNTT 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.

Third parties fraudulently posing as NTT DATA recruiters 

NTT DATA recruiters will never ask job seekers or candidates for payment or banking information during the recruitment process, for any reason. Please remain vigilant of third parties who may attempt to impersonate NTT DATA recruiters—whether in writing or by phone—in order to deceptively obtain personal data or money from you. All email communications from an NTT DATA recruiter will come from an @nttdata.com email address. If you suspect any fraudulent activity, please contact us.