Sergio Hernandez
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Spanish Native or bilingual proficiency
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English Native or bilingual proficiency
Topline Score
Bio
Loredana Ciobanu
If I would have to make a top of the best company clients representatives I've ever worked with, Sergio would certainly be in it. He is a great professional and leader, with excellent analytical and problem solving skills. He is very thorough in everything he does and can be depended upon to get the job done. The kind of person that "more than fills his role" within a company. I appreciated his dedication and how well he knew the system that my company deployed while he was a billing manager at Telem. Sergio has a winning combination of solid technical skills and business sense. I recommend him to any project or role that requires the very best in both execution and management.
Loredana Ciobanu
If I would have to make a top of the best company clients representatives I've ever worked with, Sergio would certainly be in it. He is a great professional and leader, with excellent analytical and problem solving skills. He is very thorough in everything he does and can be depended upon to get the job done. The kind of person that "more than fills his role" within a company. I appreciated his dedication and how well he knew the system that my company deployed while he was a billing manager at Telem. Sergio has a winning combination of solid technical skills and business sense. I recommend him to any project or role that requires the very best in both execution and management.
Loredana Ciobanu
If I would have to make a top of the best company clients representatives I've ever worked with, Sergio would certainly be in it. He is a great professional and leader, with excellent analytical and problem solving skills. He is very thorough in everything he does and can be depended upon to get the job done. The kind of person that "more than fills his role" within a company. I appreciated his dedication and how well he knew the system that my company deployed while he was a billing manager at Telem. Sergio has a winning combination of solid technical skills and business sense. I recommend him to any project or role that requires the very best in both execution and management.
Loredana Ciobanu
If I would have to make a top of the best company clients representatives I've ever worked with, Sergio would certainly be in it. He is a great professional and leader, with excellent analytical and problem solving skills. He is very thorough in everything he does and can be depended upon to get the job done. The kind of person that "more than fills his role" within a company. I appreciated his dedication and how well he knew the system that my company deployed while he was a billing manager at Telem. Sergio has a winning combination of solid technical skills and business sense. I recommend him to any project or role that requires the very best in both execution and management.
Credentials
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KNX Advanced Course
KNX AssociationFeb, 2017- Nov, 2024 -
KNX Basic Course
KNX AssociationJan, 2017- Nov, 2024 -
Practitioner of Telecommunications Revenue Assurance
GRAPASep, 2013- Nov, 2024
Experience
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GO plc
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Malta
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Telecommunications
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300 - 400 Employee
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Jul 2020 - Present
Responsible for Revenue Assurance & Fraud Management systems; Faults/Alarms & Performance Monitoring systems
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Oct 2019 - Jun 2020
SME in charge of Revenue Assurance and Fraud Management systems (Subex)
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Halliburton
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United States
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Oil and Gas
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700 & Above Employee
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Planning Engineer
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Sep 2018 - Jun 2019
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Inversions Empordà
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Spain
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Project Manager
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Dec 2016 - Sep 2018
Specializing in home renovations, construction and Smart Home solutions (KNX & Loxone). Maintenance of HVAC systems at big hotels and residential buildings in the Costa Brava area. Specializing in home renovations, construction and Smart Home solutions (KNX & Loxone). Maintenance of HVAC systems at big hotels and residential buildings in the Costa Brava area.
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Telecommunications Consultant
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Nov 2013 - Dec 2017
Assisting Telecommunication companies in the Caribbean region with various projects related to Billing, Revenue Assurance, Auditing, System Implementations, System and Data Migrations and Project Management. Advisor to the CFO/CEO. Assisting Telecommunication companies in the Caribbean region with various projects related to Billing, Revenue Assurance, Auditing, System Implementations, System and Data Migrations and Project Management. Advisor to the CFO/CEO.
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Nov 2003 - Oct 2013
Responsible for all systems involved in the billing process, from data collection to invoice printing.Liaison between departments, and between the company and software vendors, in order to address technical issues, implement upgrades or new systems, and coordinate and execute data/system migrations.Assist in financial audits.Execute continuous Revenue Assurance audits.Accomplishments:- Implementation of the new Billing & Customer Care System (Go Live: December 2011).- Implementation of new provisioning module for Blackberry service (2010).- Involved in the creation of the RFP document and selection process for a new Billing & Customer Care System (2008-2009).- Implementation of a new NRTRDE (Near Real Time Roaming Data Exchange) system (2008).- Migration of all the ISP customers to the Land Line billing platform and bundling of offerings (2007).- Creation of a centralized web based reporting platform (2006).- Implementation of a new Mediation, Interconnect Settlements and TAP processing system (2004).Contribution to business results:- Updated existing and implemented new procedures and controls to improve the speed and accuracy of the billing process, positively affecting cash flow and helping reduce bad debt.- Implemented new Audit and Reconciliation reports, which helped Telem receive its first clean financial statements (External auditor: KPMG. Year: 2009).- Identified and fixed major revenue leaks and recovered 1 million guilders in lost revenues (2005). Show less
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Jan 2003 - Oct 2003
Responsible of ensuring a complete and accurate billing process from beginning to end. In charge of managing all systems involved in the billing process (including backup, recovery management and disaster recovery procedures).Liaison between departments, and between the company and software vendors, in order to address technical issues, implement upgrades or new systems, and coordinate and execute data/system migrations.
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Nov 2001 - Jan 2003
Accomplishments:- Implementation of procedures to ensure that tasks related to CDR processing, rating, billing and invoice generation were completed accurately.- Reconfiguration of all billing systems without assistance from vendors, which resulted in faster and more accurate invoices right after the end of each billing period.- President's Club Ascending Award for excellence and achievements (2002).Contribution to business results:- Resolved billing issues, improved the billing process and helped the company recover from a 6 months billing backlog (2001-2002), which greatly improved cash flow and reduced Telem’s AR risk. Show less
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Ipostel
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Caracas Area, Venezuela
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Database Administrator
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Apr 2001 - Oct 2001
Accomplishments: - Designed backup and disaster recovery procedures for Microsoft SQL Server 7 and Microsoft Exchange 5.5. - Designed and developed the corporate Internet Portal. Accomplishments: - Designed backup and disaster recovery procedures for Microsoft SQL Server 7 and Microsoft Exchange 5.5. - Designed and developed the corporate Internet Portal.
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Education
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Universidad Metropolitana (VE)
Bachelor's degree, Systems Engineering