Senior Voice and Telephony Architect (CCaaS)

You will be the person the team calls when calls drop, audio breaks, or a migration cutover has to work the first time.

• Design voice architecture for CCaaS migrations, including SIP trunking, BYOC, carrier and PSTN connectivity, number porting, and toll-free strategy.
• Architect and configure session border controllers (Oracle/Acme Packet, AudioCodes, Ribbon, or Cisco CUBE), including SIP normalization, header manipulation, and security.
• Plan and execute migrations from Avaya, Cisco UCCE/UCCX, and other on-premise platforms to Genesys Cloud CX, NICE CXone, Amazon Connect, and similar.
• Design call flows, transfers, and routing across systems, including SIP REFER, re-INVITE, UUI and header passing, and CTI integration with CRM.
• Engineer the media path for voice AI: audio streaming and media forking to virtual agents, latency budgets, barge-in, and DTMF handling.
• Diagnose complex voice issues using SIP ladder analysis, packet captures, and carrier traces.
• Address voice compliance and trust: E911, Kari’s Law and RAY BAUM’S Act, STIR/SHAKEN, call recording (SIPREC), and PCI handling for payments.
• Support pursuits with voice architecture, migration approach, and effort estimates. What you bring * 8+ years in enterprise voice, unified communications, or contact center telephony.
• Deep SIP expertise: call flows, SDP negotiation, codecs
• Hands-on SBC design and configuration in production environments.

hands-on voice and telephony experience with Genesys Cloud CX, NICE CXone, or Amazon Connect, including connecting the platform to carriers and enterprise voice networks through BYOC or SIP trunking. Working knowledge of Microsoft Teams Direct Routing and enterprise UC integration. Proficiency with troubleshooting tools such as Wireshark, sngrep, and HOMER. Ability to explain complex telephony issues clearly to clients and non-specialist teammates.

Nice to have -

Certifications such as CCNP/CCIE Collaboration, Genesys Cloud, Amazon Connect, AudioCodes, or Oracle SBC. Experience with WebRTC and digital voice channels. Experience with voice AI platforms and real-time speech pipelines (ASR, TTS, LLM-based voice agents). Network fundamentals: QoS, SD-WAN, and capacity planning for voice.

The base compensation range for this role in the posted location is: $82,082 - $193,440.

Capgemini provides compensation range information in accordance with applicable national, state, provincial, and local pay transparency laws. The base compensation range listed for this position reflects the minimum and maximum target compensation Capgemini, in good faith, believes it may pay for the role at the time of this posting. This range may be subject to change as permitted by law.

The actual compensation offered to any candidate may fall outside of the posted range and will be determined based on multiple factors legally permitted in the applicable jurisdiction.

These may include, but are not limited to: Geographic location, Education and qualifications, Certifications and licenses, Relevant experience and skills, Seniority and performance, Market and business consideration, Internal pay equity.

It is not typical for candidates to be hired at or near the top of the posted compensation range.

In addition to base salary, this role may be eligible for additional compensation such as variable incentives, bonuses, or commissions, depending on the position and applicable laws.

Capgemini offers a comprehensive, non-negotiable benefits package to all regular, full-time employees. In the U.S. and Canada, available benefits are determined by local policy and eligibility and may include:

• Paid time off based on employee grade (A-F), defined by policy: Vacation: 12-25 days, depending on grade, Company paid holidays, Personal Days, Sick Leave

• Medical, dental, and vision coverage (or provincial healthcare coordination in Canada)
• Retirement savings plans (e.g., 401(k) in the U.S., RRSP in Canada)
• Life and disability insurance
• Employee assistance programs
• Other benefits as provided by local policy and eligibility

Important Notice: Compensation (including bonuses, commissions, or other forms of incentive pay) is not considered earned, vested, or payable until it becomes due under the terms of applicable plans or agreements and is subject to Capgemini’s discretion, consistent with applicable laws. The Company reserves the right to amend or withdraw compensation programs at any time, within the limits of applicable legislation.

Choosing Capgemini means choosing a company where you will be empowered to shape your career in the way you’d like, where you’ll be supported and inspired by a collaborative community of colleagues around the world, and where you’ll be able to reimagine what’s possible. Join us and help the world’s leading organizations unlock the value of technology and build a more sustainable, more inclusive world., Capgemini is a global business and technology transformation partner, helping organizations to accelerate their dual transition to a digital and sustainable world, while creating tangible impact for enterprises and society. It is a responsible and diverse group of 340,000 team members in more than 50 countries. With its strong over 55-year heritage, Capgemini is trusted by its clients to unlock the value of technology to address the entire breadth of their business needs. It delivers end-to-end services and solutions leveraging strengths from strategy and design to engineering, all fueled by its market leading capabilities in AI, generative AI, cloud and data, combined with its deep industry expertise and partner ecosystem.