Senior VoIP / Cisco Collaboration Engineer

• →Act as the Subject Matter Expert for enterprise VoIP and Cisco collaboration technologies.
• →Contribute to VoIP transformation initiatives, including Cisco Unified Communications Manager consolidation and migration to version 12.5.
• →Provide Level 3 technical support for complex voice and networking incidents in a multi-tier support environment.
• →Design, administer, maintain, and troubleshoot VoIP infrastructure to ensure reliability, performance, and service continuity.
• →Collaborate with networking, infrastructure, security, service management, and client stakeholders to resolve technical issues and deliver project objectives.
• →Manage client expectations, communicate risks and progress clearly, and work independently with limited supervision.
• →Create and maintain accurate technical documentation, operational procedures, incident records, and implementation plans.

• 5+ years of professional experience supporting and managing enterprise VoIP environments.
• Hands-on experience with Cisco Unified Communications Manager (CUCM) and Cisco-based voice infrastructure.
• Experience with VoIP infrastructure design, administration, migration, troubleshooting, and Level 3 support.
• Solid knowledge of IP networking fundamentals, including switching, routing, firewalls, and Quality of Service for voice traffic.
• Ability to work autonomously, prioritise effectively, and manage client expectations in a remote environment.
• Experience working with ticketing or IT service management systems.
• Advanced English proficiency, with the ability to lead technical discussions, explain incidents and solutions, and produce clear technical documentation.

• Experience with Cisco Unified Communications Manager consolidation, upgrades, or migrations, particularly version 12.5.
• Knowledge of SIP, voice gateways, dial plans, Cisco CUBE, session border controllers, and voice traffic analysis.
• Experience supporting large enterprise or utility environments.
• CCNP certification or advanced Cisco collaboration expertise.

• Cisco Unified Communications Manager (CUCM)
• Cisco VoIP and collaboration infrastructure
• SIP, IP telephony, voice gateways, and call routing
• Switching, routing, firewalls, and Quality of Service
• Ticketing and IT service management platforms

• Bachelor’s degree in Computer Science, Information Technology, Engineering, Telecommunications, or a related field, or equivalent professional experience.
• CCNA certification preferred.
• CCNP certification highly preferred.

NTT DATA is a Top 5 global IT services provider with more than 190,000 professionals across 50+ countries. We combine industry expertise with capabilities in consulting, technology, AI, cloud, applications, infrastructure, and connectivity to help organizations innovate, optimize, and transform. Through responsible innovation, we deliver meaningful business outcomes, accelerate client success, and create a positive impact on society.

NTT DATA is committed to hiring and retaining a diverse workforce. We are proud to be an Equal Opportunity/Affirmative Action-Employer, making decisions without regard to race, color, religion, creed, sex, sexual orientation, gender identity, marital status, national origin, age, veteran status, disability, or any other protected class. NTT DATA is an Equal Opportunity Employer Male/Female/Disabled/Veteran and a VEVRAA Federal Contractor.

Req ID: 1342