Manage IP exchange projects, roaming agreements and implementation. Design network and support operations (5G, 4G, IMS, VAS, BSS and 3G). Manage network services expansion projects, roaming and interworking.• Planed, deployed and launched national bilateral and international sponsored roaming services, expanding coverage to worldwide.• Implemented and launched intercarrier national and international SMS and MMS, SMS A2P and Welcome SMS, enabling SMS business use cases• Defined and put in place operational process (Documentation, Change, Incident and Problem Management)• Managed vendors contracts, support, access, tools, reports and KPI• Planed, deployed and completed IPX integration (physical and IP connectivity, routing and signaling connection), making the network communication with the outside world possible• Designed Signaling, IP routing and security• Implemented and managed Clearing House, data processing (TAP files, CDR and reports)• Reviewed and approved HLD documentation covering end to end network and services• Managed the Company GSMA profile, documents and integrations, ensuring alignment to specifications

Manage operations activities and optimize services quality and availability. Support wireless projects and network nodes (3G, 4G, 5G, IMS, IoT, MOCN and Roaming: SGSN, MME, GGSN, SGW, PGW, WMG, PCRF, DSC-DRA, DSC-DEA, AAA, DNS, SBG, CSCF, MTAS, FWL, BGW, NR and gNodeB). • Supported NFV implementation and managed migration to VNFs• Managed IoT implementation, documentation and operationalization• Supported smooth IP network migration to SDN avoiding service impacts • Managed VoWifi implementation and operationalization (and reduced Handover VoLTE-VoWifi failure rate, from 25% to 3%)• Developed services dashboards and put in place proactive detection and issue management processes• Trained team members and assumed SME role• Developed automated network testing scripts • Supported network operations and issue issues (troubleshooting and resolution)

Managed Wireless Network projects implementation, operationalization, network changes and support mobile network services and roaming (Ericsson, Nokia, Alcatel, Samsung, Cisco, Juniper; incident/problem troubleshooting and resolution) • Deployed VoLTE, MOCN and Private Mobile Data Network services• Solved complex network issues (improved AT&T interworking success rate from 60% to 95%) • Developed service testing scripts and services KPI dashboard

Manage LTE project implementation and operationalization, support Mobile Packet Core Network (4G, 3G) and IP backbone Routers, Switches, Firewalls and Border Gateways (Ericsson, Cisco, Extreme, Juniper). Administer monitoring and traffic capture subsystem (Netscout).• Ensured smooth and complete LTE project operationalization• Mentored team members, ensured training and SME role• Managed and supported network operations

Servers and Data Bases administration and management • Administer servers, processes and resources usage (CPU and memory) • System and Data Base backups management

Coordinate, administer and support networks nodes (3G and 2G), interfaces, services and operation systems• Prepared LTE implementation project• Deployed and operated 3G network• Migrated network from Alcatel to Huawei ensuring minimal impact

Manage network operations, monitoring and troubleshooting (GSM, GPRS, EDGE, UMTS and SDH)• Organized, planned and coordinated network activities and load management• Optimized network performance (Reduced call drop rate from 30% to 3%)

Conduct network operation and maintenance (GSM and GPRS), Install and manage radio connections (Radio Links and Satellite)