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Angel Mario de Leon

@angelmariodeleon

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Revenue assurance expert and senior implementation engineer with strong data analysis and telecom delivery experience.

Guatemala

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What I'm looking for

I seek roles where I can apply revenue assurance, ETL and BI expertise to solve telecom fraud and data challenges, work directly with customers, and lead implementations and mentoring.

I am a revenue assurance and fraud management specialist with over 15 years in the telecommunications industry and 12 years in customer-facing roles, delivering complex implementations across Latin America, Africa and other regions. I combine deep SQL, ETL and data analysis expertise with stakeholder management to design solutions, run POCs, and provide on-site training that reduce loss and improve operational controls.

I have led end-to-end implementations, built ETL and SSIS pipelines, designed Power BI dashboards, and analyzed millions of records to detect fraud. I focus on practical, data-driven outcomes, mentoring customer teams and optimizing cloud storage and processing to support reliable reporting and assurance processes.

Experience

Work history, roles, and key accomplishments

Revenue Assurance Manager

Latro

Aug 2023 - Apr 2025 (1 year 8 months)

Led data-driven fraud detection and revenue assurance efforts, analyzing millions of records to identify telecom fraud and delivering on-site training and Power BI reporting for Latin America and Asia customers.

Revenue Assurance Fraud Detection Data Analysis SQL Power BI Python ETL Stakeholder Management

ETL Business Intelligence Support

Prodapt

May 2021 - Apr 2022 (11 months)

Built ETL pipelines from diverse sources and designed finance dashboards in Power BI while optimizing AWS S3 file structures for multinational telecom clients across the Caribbean and Latin America.

ETL AWS S3 Power BI SQL MySQL Data Visualization Excel

RAFM Software Engineer

Amdocs

Dec 2015 - Feb 2019 (3 years 2 months)

Designed and implemented ETL/SSIS solutions and validation processes for RAFM, managed requirements and POCs, and identified revenue assurance and fraud risks across provisioning, mediation, billing and CRM.

ETL SSIS SQL Requirements Management Revenue Assurance Fraud Analysis Project Management

Implementation Developer

Cvidya Ltd.

Sep 2011 - Dec 2015 (4 years 3 months)

Designed and implemented ETL and validation processes and SSIS solutions for revenue assurance software, managed server environments and trained/mentored customer RA analyst teams.

ETL SSIS Revenue Assurance Training SQL Data Validation Implementation

IT Consultant and Developer

Organization of American States

Mar 1999 - Mar 2002 (3 years)

Developed Guatemala's first automated civil registration software, led digitization of municipal handwritten records and produced implementation reports for OAS project stakeholders.

Software Development Systems Design Digitalization Project Reporting Stakeholder Management