Mahmoud Abdel Salam
Wholesale Billing Senior
6th Of October City
Summary
IT Senior with 15 years of experience providing comprehensive support, executive assistance and skillful Wholesale billing (interconnect and roaming) of several telecommunication systems.
Developed skills in fast-paced, customer-focused environment, excelling in logistics and team coordination. Strong background in strategic planning and operational efficiency, ensuring smooth processes and high service standards. Seeking to transition into new field, leveraging these transferrable skills to deliver impactful results.
Overview
20
20
years of professional experience
2004
2004
years of post-secondary education
1
1
Certification
2
2
Languages
Work History
Intl Interconnect & Intl Roaming Senior
WE
05.2021 - Current
- System experience : Global information and communications technology (ITU) solutions provider WRM Enghouse.
- Interconnect and roaming systems training in Sweden 2024.
- CR Designer and Developer,Operation, L3 support, and QA engineer of WRM system. Covering International Interconnect and International Roaming traffic (inbound & outbound).
- Responsible for TADG test for international bilateral agreements for outbound roamers WE (IR24, IR32, IR35, IR38) and issue the TCC for outbound roaming operators.
- Interconnect system End-to-end, receiving the CDRs, classification, configurations, rating, creating new (Reports, Invoices) and handling disputes
- Working closely with integrated systems Mediation, LCR, RA, DWH & E-TAX.
- Contributed to the development and implementation of roaming strategies to meet organization's goals and objectives while maintaining customer satisfaction.
- Implement fraud measures to prevent revenue lose and safeguard customer information while using international networks.
- Provided exceptional customer support by addressing inquiries related to roaming charges, billing disputes, and technical issues promptly and professionally.
- Maintained detailed records of all active roaming agreements, keeping stakeholders informed about contract status and upcoming renewals or negotiations.
- Managed roaming agreements for seamless connectivity, fostering strong relationships with international partners.
- Ensured proper implementation of tariff changes according to contractual obligations in a timely manner.
- Maintained positive customer relations by addressing problems head-on and implementing successful corrective actions.
- Established team priorities, maintained schedules and monitored performance.
- Defined clear targets and objectives and communicated to other team members.
Intl Interconnect & Intl Roaming
WE
10.2019 - 04.2021
- System experience : Global information and communications technology (ITU) solutions providers I IBB Bassett, PRM Huawei
- Interconnect and roaming systems training on PRM Huawei in Egypt
- CR Designer, CR Developer, support, Operation, L3 engineer, QA engineer of WRM system telecommunication system covering both international interconnect and international roaming traffic (outbound)
- Responsible for TADG test for international bilateral agreement for outbound roamer WE (IR24, IR32, IR35, IR38) then issue the TCC for outbound roaming operators
- Responsible for all operations end to end from the interconnect system receiving the CDRs, classification, configurations, rating, creating new (Reports, Invoices) and handling disputes
- Working closely with integrated system like Mediation, LCR, RA, DWH, E-TAX
- Contributed to the development and implementation of roaming strategies to meet organizational goals and objectives while maintaining customer satisfaction.
- Implemented fraud prevention measures to protect the company''s revenue and safeguard customer information while using international networks.
- Provided exceptional customer support by addressing inquiries related to roaming charges, billing disputes, and technical issues promptly and professionally.
- Maintained detailed records of all active roaming agreements, keeping stakeholders informed about contract status and upcoming renewals or negotiations.
- Managed roaming agreements for seamless connectivity, fostering strong relationships with international partners.
- Ensured proper implementation of tariff changes according to contractual obligations in a timely manner.
- Conducted regular audits on partner networks, ensuring optimal network performance for customers using roaming services.
- Maintained positive customer relations by addressing problems head-on and implementing successful corrective actions.
- Established team priorities, maintained schedules and monitored performance.
- Defined clear targets and objectives and communicated to other team members.
Intl Interconnect Technical, Operation
WE
06.2016 - 09.2019
- System experience : Global information and communications technology (ITU) solutions providers IBB Bassett(2016)
- Interconnect systems training in Sweden 2016.
- CR Designer, CR Developer, support, Operation, L3 engineer, QA engineer of IBB system.
- Responsible for all operations end to end from the interconnect system receiving the CDRs, classification, configurations, rating, creating new (Reports, Invoices) and handling disputes
- Working closely with integrated system like Mediation, LCR, RA, DWH, E-TAX
- Implemented fraud prevention measures to protect the company''s revenue and safeguard customer information while using international networks.
- contract status and upcoming renewals or negotiations.
- Ensured proper implementation of tariff changes according to contractual obligations in a timely manner.
- Maintained positive customer relations by addressing problems head-on and implementing successful corrective actions.
- Established team priorities, maintained schedules and monitored performance.
Intl Interconnect Operation
WE
06.2014 - 05.2016
- System experience : Global information and communications technology (ITU) solutions provider Intec CSG
- Operation, L3 engineer
- Responsible for all operations end to end from the interconnect system receiving the CDRs, classification, configurations, rating, creating new (Reports, Invoices) and handling disputes.
- Defined clear targets and objectives and communicated to other team members.
IRB 2.2 Developer
WE
10.2009 - 05.2014
- Responsible for providing the solution for any change required and study the impacts of the change.
- Configure Rate Plans and Price Plans.
- Configure Products, Packages and Discounts.
- Add test cases and do the unit tests.
- Help to ensure the right execution of monthly and quarterly bill cycles including the test bill cycle with UAT team.
- Write Unix shell scripts to help Operations team in splitting files due to Customer Categories, Specific Accounts.
- Share reviewing and amendments of SOW for billing system upgrade project from IRB 2.2 to RBM 9.0.
- Reconcile IRB 2.2 GMF files against RBM 9.0 GMF files, by splitting against account number and comparing each account and its contents.
- Responsible for gathering the requirements of the business and marketing team and providing the solution for the new promotions and changes required, studying the impacts of the change according to the core documentation and the functional specification of all interfaces with other systems like CRM, DWH(Teradata), Mediation & Revenue assurance system, and make the required updates in the Function Specification.
- Support the Testing team, investigating the incidents, recommend test cases, and may amend the proposed solution.
- Continuously updated skills through training courses, workshops, and self-study—staying current on industry trends and emerging technologies.
Mediation Technical Support
WE
10.2008 - 09.2009
- Contributed to team success by completing jobs quickly and accurately.
- Learned all required tasks quickly to maximize performance.
- Developed strong cooperative relationships with coworkers and managers.
- Provided exceptional support to colleagues by sharing knowledge, offering assistance, and fostering teamwork.
Data Base Administrator DBA
Cairo University (IT Department)
08.2007 - 10.2008
- Developer by Oracle & Sql Server .
- Handled sensitive information discreetly, maintaining strict confidentiality at all times as required by company policy or legal regulations.
- Managed office inventory levels, ensuring adequate supplies were available while minimizing waste and unnecessary spending.
- Used critical thinking skills, decisive judgment and worked with minimal supervision.
- Designed database schemas to support efficient storage, retrieval, and manipulation of complex data sets.
Developer Programmer
Cairo University (IT Department)
09.2004 - 07.2007
- Developer by VB .Net & C#.Net.
- Used critical thinking skills, decisive judgment and worked with minimal supervision.
- Designed database schemas to support efficient storage, retrieval, and manipulation of complex data sets.
Education
Bachelor of Computer -
Advanced Academy – Cairo University
EgyptDiploma in Commerce - undefined
Cairo University
Skills
ANALYSING
undefinedProgramming languages
- Python - Django, Good, Currently
- C#.net, Expert, More than 10 years
- Vb.net, Expert, More than 12 years
- Vb6, Intermediate, More than 15 years
Dbms
- Microsoft Access, Expert, More than 8 years
- Microsoft SQL Server, Expert, Currently
- Oracle Developer 10g, From 3 years
- MySQL, Expert, From 2 years
Administration
- Windows Server 2014, Intermediate, From 3 years
- SQL Server Administration, Expert, From 3 years
General application experience
Microsoft Office ( ICDL ), Expert, Currently
Courses
Oracle SQL, SQL Server, SQL Server Admin, SQL Server data models & Reporting, Developing ASP.NET MVC 4 Web, Programming C#, Secure Coding, GSM Introduction, HP UNIX Fundamentals, UNIX Fundamentals (Solaris), Photoshop, MCDB Microsoft-certified database administrator, Project Management, ITIL, Emotional intelligence, Good listening is the key to success, Know yourself and understand others, Risk Management, Strategic Planning, Ethics skills profession, Linux
Operating systems
- DOS, Expert, More than 20 years
- Windows Server 2003, Expert, More than 6 years
- All Windows Versions, Expert, Currently
- UNIX HP, Good, Currently
- Linux, Good, Currently
Certification
MCDB Microsoft-certified Data Base adminstration
Timeline
Intl Interconnect & Intl Roaming Senior
WE
05.2021 - Current
Intl Interconnect & Intl Roaming
WE
10.2019 - 04.2021
Intl Interconnect Technical, Operation
WE
06.2016 - 09.2019
Intl Interconnect Operation
WE
06.2014 - 05.2016
IRB 2.2 Developer
WE
10.2009 - 05.2014
Mediation Technical Support
WE
10.2008 - 09.2009
Data Base Administrator DBA
Cairo University (IT Department)
08.2007 - 10.2008
Developer Programmer
Cairo University (IT Department)
09.2004 - 07.2007
Diploma in Commerce - undefined
Cairo University
Bachelor of Computer -
Advanced Academy – Cairo University
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