Network Voice Eng

Overview

Tata Consultancy Services is seeking a Network Voice Eng. to design, implement, and support enterprise collaboration solutions across our global environment. This role requires deep technical expertise in Cisco and Avaya voice technologies, including Cisco Call Manager (CUCM) On-Prem, Call Manager Express, Webex Calling, Expressway, and Avaya Communication Systems. Experience with Session Border Controllers (SBCs), SIP trunking, and hybrid deployments in Equinix or similar environments is also required.

Location: the candidate must be located or relocate to Querétaro, CDMX, Guadalajara or Monterrey and attend the office at least 3 days per week.

Responsibilities

• Provide operations support for Enterprise LAN, WAN, Wireless, Security, Data Center, and architect and implement collaboration solutions using Cisco and Avaya technologies.
• Design and support Cisco Unified Communications (CUCM) both on-premises and in the cloud.
• Configure and troubleshoot Call Manager Express, Webex Calling, and Expressway environments.
• Work with Session Border Controllers (SBCs) to ensure secure and compliant voice integrations.
• Migrate legacy Avaya infrastructure to modern Cisco cloud platforms.
• Collaborate with networking and infrastructure teams, especially in Equinix-hosted environments.
• Develop documentation, standards, and best practices for voice/collaboration infrastructure.
• Provide Tier 3 support and act as subject matter expert for collaboration-related escalations.

Qualifications

• Advanced English (mandatory).
• 5+ years of experience in enterprise collaboration/voice environments.
• Deep knowledge of Cisco CUCM (On-Prem & Cloud), CME, Webex, and Expressway.
• Strong understanding of Avaya Communication Manager and related VoIP technologies.
• Experience with SIP, SBCs, and voice security.
• Familiarity with Equinix environments or other data center voice deployments.
• Cisco certifications (e.g., CCNP Collaboration, CCIE Collaboration) are a strong plus.
• Excellent troubleshooting, documentation, and communication skills.
• Experience integrating collaboration tools with Microsoft Teams or other platforms.

Location and travel

Location: Querétaro, CDMX, Guadalajara or Monterrey. Relocation required. Attendance at the office at least 3 days per week.

Employment type

• Full-time

Seniority level

• Associate

Benefits

• Direct contract
• Benefits above the legal minimum

Equal Opportunity

Tata Consultancy Services is an equal opportunity employer. Our commitment to diversity and inclusion drives our efforts to provide equal opportunity to all candidates who meet the required knowledge and competency needs, irrespective of socio-economic background, race, color, national origin, religion, sex, gender identity/expression, age, marital status, disability, sexual orientation or any other status. We encourage anyone interested to participate in our recruitment and selection process.

Job function

• Information Technology

Industries

• IT Services and IT Consulting