Network Services Architect (Voice/SIP)

We are looking for a Network Services Architect (Voice/SIP) to lead the voice and core services architecture for a large-scale network consolidation program at a US-based Tier-2 Telco. The role owns the Voice, SIP, and core IP services domain, focusing on transforming fragmented legacy voice environments into a standardized target-state architecture that can be executed at scale by the migration engine.

This position is ideal for professionals experienced in complex telecom transformations who excel at designing scalable voice architectures and resolving multi-vendor integration challenges.

Responsibilities

• Define and document the target-state architecture for the Network Services domain, including SIP trunk consolidation, SBC configuration templates, and dial-plan normalization.
• Identify and resolve enterprise DNS conflicts and IPAM-related issues across multiple legacy network environments.
• Develop standardized configuration templates and architectural guardrails for Voice and SIP services to support large-scale automated deployments.
• Design routing frameworks for emergency and authenticated communications, aligning with regulatory and compliance requirements while coordinating with client legal teams for approvals (e.g., e911, STIR/SHAKEN).
• Define clear exit criteria and Definition of Done (DoD) for voice migrations, enabling consistent and safe execution by offshore delivery teams.
• Contribute to architecture governance, including participation in architecture reviews, design approvals, and development of enterprise standards and reference architectures. Collaborate with cross-domain architects (security, application, platform) on integrated design decisions.