Senior Specialist - Roaming And Signaling

Experience Required

• 10+ Years of progressive experience managing the implementation, integration, and operations of carrier-level applications and platforms in a variety of technology footprints and geographies and markets.
• Functional experience in Core platforms including messaging, mobility, roaming, signalling, and related value-added services (VAS) and security.
• Knowledge of IP, CCNA is an added advantage.
• Solid understanding of virtualisation and cloud-based solutions and technologies in relation to Roaming, Messaging and Signalling platforms
• Hands on experience with Roaming, Messaging and Signalling hubs / platforms as well as value added platforms.
• Hands on experience with SMS Routing, Hub and Firewall technology
• Understanding open connectivity roaming hub and/or experience working with Data Clearing Houses is a valuable asset.
• Strong Knowledge on GSM/LTE/5G network architecture and signalling architecture (STPs/DRA/DEA).
• Strong Knowledge on End to End architecture and connectivity at solution level including core network, signalling, roaming and VAS.
• Expert Knowledge of Signalling protocols and standards relating to CAMEL/GRX/GTP/DIAMETER, SIP, RTP, MEGACO, SCCP, GSM MAP and SS7/SIGTRAN/ISUP.
• Understanding of the standard call flows for messaging, roaming Vas and Signalling involving multiple services.
• Basic understanding of IPX and its positioning with the career network infrastructure.
• Understanding of IoT platforms, providers and mobile roaming and roaming VAS.
• Expert in SMS/SMPP data solutions (A2P,P2A, P2P, RCS, etc).
• Understanding of billing systems, CDRs, TAP flows, TAP files.
• Knowledge of UNIX-Solaris, AIX, HPUX, Windows, Linux and cloud technology including containerisation (CNFs).
• Extensive knowledge of virtualized environments (VNFs), APIs.
• Understanding of other core platform and network areas including voice core, unified communications and collaboration, and related value-added services (VAS) and security.
• Familiarity with SIP and IP Telephony protocols
• Understanding of troubleshooting processes for connectivity

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