International Voice & Infrastructure Support Engineer

We are HCLTech, one of the fastest-growing large tech companies in the world and home to 225,000+ people across 60 countries, supercharging progress through industry-leading capabilities centered around Digital, Engineering and Cloud. The driving force behind that work, our people, are diverse, creative, and passionate, raising the bar for excellence on a regular basis. We, in turn, work hard to bring out the best in them as we strive to help them find their spark and become the best version of themselves that they can be.

About the Role

We are seeking experienced International Voice & Infrastructure Support Engineers to join Verizon’s Global Network & Engineering team. This role focuses on Tier 3 support, deployment, and maintenance of Contact Center, Unified Communications, and Virtualized Infrastructure across EMEA and APAC regions. You will act as a core extension of the International Voice Network (IVN) team, supporting both data center infrastructure and application layers, ensuring high availability and seamless operatio

Key Responsibilities

• Provide Tier 3 support for complex incidents, outages, and integrations
• Manage Cisco UCCE, CUCM (Admin 17/18), and Avaya CM environments
• Handle installation, upgrades, and maintenance of contact center platforms
• Configure & manage Oracle Session Border Controllers (SBCs) in HA setup
• Support VMware vSphere, ESXi, and virtual infrastructure environments
• Oversee physical data center operations (rack design, power, connectivity)
• Perform PABX maintenance (MACs – Moves/Adds/Changes) onsite
• Maintain technical documentation and configuration baselines
• Coordinate with local teams and third-party vendors for infrastructure activities

🎯 What You Bring

• 8–12 years of experience in Voice / Infrastructure Support (Tier 3 level)
• Strong hands-on expertise in:
• Cisco UCCE & CUCM
• Avaya Communication Manager
• Solid experience in Contact Center & Unified Communications environments
• Proficiency in VMware (vSphere, ESXi, vCenter), UCS, and NSX
• Experience handling complex incidents, troubleshooting & system upgrades
• Knowledge of VoIP, telephony systems & data center operations
• Exposure to Oracle SBC / Session Manager (preferred)
• Ability to work across global environments (EMEA/APAC support)
• Strong documentation, problem-solving & stakeholder coordination skills
• Fluency in German (B2/C1+) and English

💡 Why Join?

• Exposure to large-scale contact center & voice networks
• Work in a high-impact Tier 3 engineering role
• International collaboration across EMEA & APAC regions

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We promote equal opportunities for all employees, regardless of their cultural and social background, gender, disability, age, religion, beliefs, and sexual identity. We give priority consideration to severely disabled applicants and those of equal status in the case of equal suitability.