Walter Martins Email & Phone Number

Kanata, Ontario, Ca

95877 Bezons, Fr

Design and implementation of an emergency text call application for new generation emergency network (NG9-1-1)End-to-end software design, implementation, and testing for new features for Circuit, a PaaS Collaboration (Unified Communications) platform, like:Share and balance telephony resources among hundreds of small tenants to achieve cost savings and prevent service interruptions.Pickup WebRTC and telephony calls across user's configured teams. Call processing and administration. Client Localization, subnet provisioning for Emergency calling, and Session Border Controller Configuration by the Tenant administrator.Promote the Circuit Platform and SDK through prototype development and software engineering articles, and contributions to the GitHub Circuit organization.Integrating telephony services into Circuit Web application and Android Mobile client.Integrate the Circuit Web App and Microsoft Exchange Server to enable phone number reverse lookup functionality. Implement QoS reporting to monitor service quality while troubleshooting and fixing system bugs and performance issues.Maintain a lightweight mock-server for Web-only developers and visual QA testers.Champion best practices and provide training and staff development to junior engineers.

Munich, Bavaria, De

Collaborated with a team of 200+ software engineers to complete the front and back-end design and development of Circuit, a WebRTC-based collaboration platform, and a suite of associated applications.Implemented and tested Openscape Mobile, an Android mobile application that enabled voice and unified communications; served as the sole designer, the UI for Openscape Mobile on Android Tablets.Integrated the Siemens Unified Communications mobile app into the Openscape Android app, adding much-requested features. Led a team to implement the redesign of the real-time SIP registration processing of Openscape Voice (VoIP switch) to support nodes geo separation; implemented throttling of SIP registrations and SIP Endpoints Audit (SIP:OPTIONS)Wrote unit and E2E tests for Openscape Voice’s Translation and Routing components.

Munich, De

Managed the design, implementation, and testing of new features for an OpenScape Voice-based VoIP server. Spearheaded the design, implementation, and testing of features for a large Electronic Digital EWSD Switching System for public telecommunications.Collaborated with a team of 300+ to complete the development and testing of CALEA (Call recording and interception for Law Enforcement Agencies) and MLPP (European Based US Military Multi Level Precedence and Preemption) capabilities for the ESWD Carrier switch per government regulations.Designed, developed, and integrated a component that enabled SDP parsing and processing for a VoIP gateway for the EWSD Carrier Switch. Maintained the full set of data audits for EWSD Carrier Switch, ensuring maximal quality and strict compliance.

Espoo, Southern Finland, Fi