Roy Sakai

- Led implementation, ATP execution, and production support for carrier-grade device management platforms across Brazil and LATAM.

- Successfully deployed DX 5.5 on AWS for Claro Brasil, managing up to 4 million mesh devices, using Terraform for infrastructure provisioning.

- Migrated approximately 1 million devices from DX 5.3 to DX 5.5 with no downtime.

- Designed and executed migration of st

- Supported Huawei Brazil operations for Vivo’s NGIN, ENIP, and Mediation Systems.

- Provided 24x7 operational support, including maintenance windows, night shifts, and critical incident response.

- Troubleshot telecom signaling and call flows using Wireshark and iTrace:
- SIP, SS7, CAMEL, VoLTE, TUGO

- Worked in high-pressure production environments with strict SLA requirements.

- Worked on Management Systems for NGN, SDH, Metro-Ethernet, and GSM networks.

- Integrated management platforms with OSS northbound systems.

- Supported Genesys Call Center projects for Telefónica/Vivo, configuring and deploying hundreds of Linux (Red Hat) and Windows servers.

- Trained in LTE (4G) Access and Core: installation, commissioning, management.

- Participated in international upgra

- Supported Genesys Call Center deployments for telecom operators.

- Planned, installed, and configured large-scale server environments on Linux Red Hat and Windows Server.

- Supported Comverse RTBS customers across Latin America.

- Performed installation, expansion, and upgrades of billing systems in production environments.

- Founded and led a telecommunications consulting company focused on VoIP, SS7, Mesh, and Wi-Fi solutions.

- Planned, executed, and documented technical tests and validations for multiple telecom equipment and software vendors, resulting in strategic partnerships with companies such as IPCorp, Track Studio, Argent Software, Ynoma, and Ilient.

- Led resource management (teams and equipment) for m

- Supported telecom system implementations and expansions for major Brazilian operators including Telesp Celular, Embratel, Global Telecom, and Brasil Telecom.

- Contributed to Telesp Celular system implantation, improving network analysis, dimensioning, and call response times, and helping reduce revenue loss.

- Worked on Embratel network expansion projects, increasing network visibility, perfo

- Implemented, tested, commissioned, and supported NEC NEAX61 Sigma switching systems in carrier environments.

- Successfully deployed two NEAX61 Sigma switching systems for Telemar (Pará State) within five months, expanding network coverage and strengthening the partnership between NEC and NESIC.

- Led acceptance testing and production support for switching platforms.

- Ensured compliance with

Earned a Bachelor's degree in Telecommunications Engineering from the University of São Paulo.

Completed high school education.