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Lead Security Engineer

NTT Global Networks

5 - 10 years

Mumbai

Posted: 17/12/2025

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Job Description

Job Title: Lead Engineer Security Operations

Department: Engineering and Operations

Location: Mumbai

Reporting: Manager Security Operations

Job Type: Full Time

Shift: Rotational Shift


  1. PRE-REQUISITES
  • Strong technical and subject matter expertise in at least four or more of the following security specialties:
  • Firewall: Cisco, Palo Alto, Checkpoint, Fortinet, Zscaler, Barracuda
  • VPN - IPSEC, SSL VPN: Ivanti, F5, Cisco, GlobalProtect
  • NAC: Cisco ISE, Aruba ClearPass
  • Unified Thread Management (UTM)
  • SIEM products Qradar, Microsoft Sentinel etc.
  • Load Balancers: F5 BigIP LTM/GTM, Citrix ADC
  • Network Security (multi-vendor) experience.
  • Cloud Infrastructure Mgmt.: Cloud stack, OpenStack, AWS, Azure, Netskope, PaloAlto Prisma
  • Knowledge on scripting language like Python and automation
  • Working knowledge and hands-on experience on Linux/Unix OS is desirable.
  • Customer service experience preferably in a Global Operations Center environment
  • Ticketing system knowledge
  • Ability to workdays, evenings and weekends as required; 24x7 support in rotating shifts
  • Flexibility with the ability to manage stressful situations and adapt to rapidly changing environments and requirements
  • Analytical thinker willing to think outside the box to resolve customer impacting situations on first contact; understand customer pain
  • Ability to work with Operations and Engineering on the priority of issues to resolve the urgent customer impacting issues first
  • Aptitude and desire to learn advanced Network Security services.
  • Creative, flexible thinker who is willing to take initiatives and share alternative solutions with peers and management
  • Hands-on experience on Vulnerability Scanning, Penetration Testing Tools (Qualys, Nessus, Rapid7)
  • Exceptional documentation and communication skills
  • Ability to thrive in a fast paced, multi-cultural, customer-oriented environment
  • MS Office proficiency


  1. RESPONSIBILITIES
  • Incident Resolution
  • Ticket resolution - work on trouble tickets, support the operation of advanced Network Security Services and take escalations
  • Queue Management - keep a watch on queue and assign tickets
  • Service Request - working on request for changes as per client requirements
  • Perform the minor/major changes as per defined SoC process and work instructions
  • Be a Subject Matter Expert (SME) on a few products
  • Create Standard Operation Procedure
  • Attend client calls and other technical meetings
  • Assist in creation of Root Cause analysis (RCA)
  • Security Performance Tuning
  • Identify areas of Service Improvement Program (SIP) for key clients and reduce incidents
  • Review code upgrade and test implement before rolling on to production
  • Review documentation
  • Recognize successful intrusions and compromises through review and analysis of relevant event detail information
  • Review and update ROE on yearly basis
  • Other Functions
  • Work with hardware/software vendors to resolve problems
  • Coordinate shifts and exchange handoff between various shifts
  • Cross-train and mentor juniors
  • Participate in various network and security related projects
  • Perform other duties as assigned
  • Any additional task given to the incumbent from time-to-time based on business needs


  1. TRAINING AND CERTIFICATION REQUIRED
  • CCNA, CCSA, Fortinet NSE-4, PCNSE, CCIE, CEH


  1. EXPERIENCE
  • Minimum 10 years of progressive, relevant experience and proven capability to work in a complex network environment


  1. EDUCATION
  • Bachelor in Engineering - Computers/Electronics/Communication or related field
  • Graduate/Post Graduate in Science/Math/IT or related streams with relevant technology experience


  1. TECHNICAL AND OTHER SKILLS
  • Knowledge of ITIL, ISO27K, SOC 2 will be beneficial

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