Hi I am Senior Voice Engineer from Portugal with great experience and footprint of big projects on public and private entities. Expertise: Complex Voice/UC architectures for Service Providers (CPaaS/UCaaS/IMS) and Enterprises. Enterprise Voice/UC solutions integration into Service Providers over SIP/ISDN trunking. Cisco Voice and UC solutions(CUCM,HCS, ISR 29XX/39XX/4XXX) Open-source SIP technologies (Asterisk, FreeSwitch, OpenSIPS, Kamailio, Kazoo). Microsoft Teams/Skype migration and SIP Direct Routing. SIP Gateways (B2BUA ) certified with Microsoft Teams/Skype for direct routing and local breakout: Cisco ISR (CUBE and Voice Gateways), AudioCodes SBC/Gateway and Ribbon Sonus. Voice/UC end to end solutions certification. POC and Integration tests. Low-level and High-level Design. Service delivery and operational procedure documentation (ITIL based). Voice and UC Teams training.Secure Unified communications , cryptography and Voice/UC infrastructure penetration testing.Automation with Python, Perl and Ansible programming language.