Senior Engineer: Voice at MTN

Mission/ Core purpose of the Job
The position will provide technical support for operation and maintenance of MTN GlobalConnect voice network. The Senior Voice Engineer will drive continuous process improvement plans and analysis. The role will identify performance measures to increase network efficiencies and maintain the service level agreed with various customers.
Key Performance Areas: Core, essential responsibilities / outputs of the position (KPA's)
The Senior Voice Engineer will be accountable to achieve the following objectives: 

• Operation and maintenance of the Voice Network infrastructure (SBC, MSC and Application Servers, SIP server, etc.…).  
• Coordinate the configuration activities of onboarding customers 
• Coordinate the service testing before migration and GO live 
• Coordinate the pre-migration and the CDR reconciliation  
• Coordinate the troubleshooting by engaging all parties (Dot Net, Yelloconnect, Roaming hub); 
• Manage and ensure Voice service quality and customer satisfaction.  
• Analyze performance measurement & statistics to improve network efficiencies and identify potential issues.  
• Update and optimize the voice service processes and procedure in place.  
• Support technical discussion with opco’s and interconnect partners 
• Leading all operational aspects of managed services by ensuring stable, robust and scalable operational processes to support delivery models  
• Ensure and monitor those processes are in place to pro-actively protect consistent service quality to meet contract expectations through acceptable controls and service procedures in line with agreed upon process and standards 
• Define SLAs and customer-specific reporting of this service, both internal (OpCos) and external end customers 
• Creating and implementing standardized processes within the business unit and improving on existing methodologies, including departmental structures and organizational improvements 
• Manage and resolve high severity issues, complex problems, and outages in a timely manner using knowledge with assistance from vendors and in-house resources as needed 
• Support in the review and management of the customer service requests to ensure all they are correctly prioritized, scheduled and moved through the system as desired 

 Role Deliverables 

• Drive growth and maintain the quality of the services 
• Provide service assurance according to SLA agreed with partners  
• Tracking and monitoring of end-to-end service delivery and assurance across wholesale and fixed infrastructure service 

Job Requirements (Education, Experience and Competencies)
Education: 

• BA or BS degree (preferably in Engineering or Computer Science) (essential) 
• Master’s degree in Engineering or Computer science (desired) 

Experience: 

• Minimum five (5) years of relevant in-depth technical knowledge in areas related to platform specific systems and/or voice network operations. 

Competencies: 

• Knowledge of IMS, VoIP, Carrier-Peering, Internet Protocol, Voice over IP including SIP, RTP, codecs, architectures/platforms – Session Border Controllers, application servers, proxies, redirect servers, ENUM, back-to-back user agents, VoIP gateways 
• Experience with VoIP NNI and UNI, Tier-1 VoIP Interconnections,  
• Delivery of Formal Technical Documentation and requirements documents,  
• Knowledge of SIP & TDM interconnects technology and experience working across carriers/service providers.  
• Experience in SIP Headers and call handling, Trace back (protocol and tools), STIR/SHAKEN/PKI, VoIP, VoLTE/IMS, and TDM Call Flow Processing, Call Detail Reporting. 
• Have good understanding of call flows, routing, and porting. 
• Expertise in Network diagnostic tools and troubleshooting of WIRESHARK and protocol traces, fluent in SIP and negotiated SDP and Media packets. 
• Knowledge of primary vendors – Huawei, Ericsson, Oracle, Cisco/BroadSoft, Nokia etc.…

 
Other: 

• Regional and international travel 
• Able to motivate and inspire team members across multiple MTN footprints