Elias Chhayed Email & Phone Number

• Installed, integrated, and tested Enghouse VAS products (SMSC, USSD, MMSC, VMS, MCN, Diameter, Message Routing, ...) for more than 30 telecom operator networks worldwide.• Communicated effectively with customers to gather requirements and implement solutions, translating technical information for both technical and non-technical audiences.• Delivered first and second-line support for Enghouse VAS services, addressing OS, networking, and hardware issues.• Optimized product performance and architecture for MMSC and Diameter.• Prepared comprehensive installation documents, configuration changes, and knowledge-sharing materials to facilitate project integration and incident resolution.• Developed over 50 KPIs, reports, and system performance dashboards using Grafana and Python scripts.• Led and mentored a team of 10 engineers.• Provided training to over 100 colleagues and customers.

• Researched, developed, maintained, and enhanced telecommunications VAS solutions for mobileoperators under a UNIX environment mainly using C, C++, MYSQL, HTML, JSON, JavaScript, JQuery, and XML.• Estimated, researched, designed, developed, and documented software solutions, new features, and functions like Advertising Engine, Diameter Router, and charging.• Researched and implemented GSMA and 3GPPP standards in developing telecommunications solutions.• Provided technical documents and training for the products diminishing project implementation time and malfunctions downtime.• Carried out design and code reviews ensuring that solutions are secure, future-proof, performant, and maintainable.

• Taught C#.NET courses.• Conducted lab sessions.

• Researched, designed, and developed applications for smart home solutions using primarily C#.NET and MSSQL.• Maintained and upgraded existing solutions.• Developed a UPnP electronic picture frame media player.• Prepared operations and user guide documentation.• Collaborated with team members and senior engineers.