Leonardo Gauna

📍 Client: Empresas Polar (Food & Beverage Leader) Focus: Fiscal Compliance (SENIAT), Supply Chain Optimization (MM/PP) & HANA Performance Tuning.

Engaged as a Senior ABAP Consultant to resolve critical performance issues in legal reporting and inventory management.

▪ S/4HANA & CDS Views: Re-architected heavy legal reports (Inventory Books) using CDS Views on HANA, replacing inefficient legacy lo

Engaged as a Senior ABAP Consultant to resolve critical performance issues in legal reporting and inventory management for Empresas Polar. Re-architected heavy legal reports with S/4HANA CDS Views, implemented Venezuelan liquor tax localization, and optimized supply chain inventory/reporting logic using ABAP OOP and Smartforms.

Performed a technical audit of the logistics ecosystem (ABAP) for Farmahorro / Grupo Mistral, followed by code-level remediation of critical MM incidents. Diagnosed root causes in Z-programs and BAPIs and implemented ABAP recovery to address Material Valuation (MBEW) inconsistencies and optimize inventory management tools.

📍 Client: Farmahorro / Grupo Mistral Focus: Technical Diagnosis, ABAP Code Review & Critical Remediation (MM).

Engaged to perform a comprehensive technical audit (ABAP) of the logistics ecosystem, followed by the code-level remediation of critical incidents.

▪ Diagnostic & Analysis (Phase 1): Conducted deep debugging and analysis of existing Z-programs and standard BAPIs to identify root causes

📍Client: Banco Actinver (Banking Sector) Focus: Banking Architecture Modernization & Critical Support.

Freelance consulting delivered in parallel with my full-time role, focusing on specialized ABAP integration and REST/SOAP services.

▪ Modern Integration Architecture: Designed outbound REST interfaces for SaaS synchronization using OAuth 2.0 and native ABAP JSON serialization (CL_REST_HTTP_CLIE

Provided freelance consulting for Banco Actinver focused on ABAP integration and REST/SOAP services. Designed outbound REST interfaces using OAuth 2.0 and ABAP JSON serialization, stabilized classic SOAP/Encryption/Smartforms operations, and resolved complex incidents in Contract/Customer modules to ensure continuity.

📍 Main Client: América Móvil / Telcel (Telecom) Focus: Regional Technical Governance, Strategy & Center of Excellence (CoE).

Acted as Regional Gatekeeper and Technical Lead, ensuring code quality and architectural compliance across multiple regions (Southern Cone, Andean, Caribbean).

▪ Governance & Quality: Managed the ChaRM approval process (Quality Gates) for transports to Production, ensuring

Served as Regional Gatekeeper and Technical Lead for América Móvil / Telcel, ensuring regional code quality and architectural compliance across multiple areas. Managed ChaRM approval for transports to Production, led technical teams and estimations, and supported key projects including B2B integration architecture and S/4HANA migration with Clean Core/ATC remediation.

Acted as Technical Lead for a critical S/4HANA Greenfield Go-Live, steering the RICEFW strategy under an aggressive timeline. Led a team of 4 ABAP developers, architected bidirectional SAP ↔ IDEMPIERE interfaces using RFCs/BAPIs for logistics processes, and designed optimized CDS Views for data extraction and Power BI integration.

📍Clients: Coposa (Agro-Industry) / CAF (Development Bank) Focus: S/4HANA Greenfield Implementation (Intensive Mission).

Engaged as Technical Lead to steer the RICEFW strategy for a critical S/4HANA Go-Live.

▪ Technical Leadership: Led a team of 4 ABAP developers, managing the complete RICEFW inventory and strategy for a successful Go-Live within an aggressive 6-month timeline.

▪ Hybrid Integrat

📍 Main Client: IZZI Telecom Focus: Financial Integration, SOA Architecture & S/4HANA (CDS).

Acted as Integration Architect designing high-volume connectivity solutions between SAP and external platforms.

▪ Integration Architecture (SOA): Designed the connectivity layer for Mass Payments towards Oracle SOA, implementing WS-Reliable Messaging in asynchronous ABAP proxies to ensure zero-loss transa

Designed high-volume SAP integration solutions for IZZI Telecom with SOA/SAP connectivity and S/4HANA modernization. Built Mass Payments connectivity using WS-Reliable Messaging in asynchronous ABAP proxies, configured SOAMANAGER orchestration, automated secure FTPS CFDI transmissions via Unix scripting, and developed CAPEX models using CDS Views (Code-to-Data).

📍 Client: Empresas Polar (Food & Beverage Leader) Focus: Supply Chain Management (SCM), Logistics & High-Volume Manufacturing.

Engaged to design critical logistics solutions for one of the largest manufacturing conglomerates in LATAM.

▪ Logistics Architecture & EWM: Designed the "Traffic Control" system for Distribution Centers, managing critical truck loading/unloading flows. ▪ Warehouse Automa

📍 Clients: Mitsubishi Motors, Ron Santa Teresa, Grace Kennedy Focus: Multi-Industry Consulting, Cross-Module Solutions (SD, FI, CO, HR) & Fiscal Localization.

Engaged as a versatile Senior Consultant delivering simultaneous solutions across Automotive and FMCG industries.

▪ Sales Intelligence (SD/LIS): Designed sales analysis tools for the Beverage industry (Ron Santa Teresa) based on Logistics

Interim Development Manager and Architect to modernize the student self-service platform for IS-HER (higher education) student portals. Designed the Student Self-Service Portal using MVC architecture (Web Dynpro for ABAP), optimized login/access controls for large concurrent enrollment periods, and implemented banking integration using SAP NetWeaver Gateway for online tuition payments.

📍 Focus: Industry Solution for Higher Education (IS-HER) & Student Portals

Recruited as an interim Development Manager and Architect to modernize the student self-service platform.

▪ Web Architecture: Designed the integral Student Self-Service Portal using MVC architecture (Web Dynpro for ABAP), managing complex user sessions and state. ▪ UX & Security: Optimized the Login process and access con

📍 Client: Cervecería Regional (FMCG / Beverage) Focus: Fiscal Localization, Direct Store Delivery (DSD) & Performance Tuning.

Engaged to deliver critical compliance and logistics solutions for a major beverage company.

▪ Mobile Logistics (DSD): Developed backend solutions for data synchronization with mobile devices (Handhelds) for route sales, managing complex offline/online data distribution l

📍 Focus: Security Governance, Release Management & Optimization.

Acted as a hybrid Technical Consultant managing both Development and Basis/Security layers.

▪ Security & Governance: Comprehensive management of the Security Model (Roles/Profiles), ensuring Segregation of Duties (SoD) and restricting access to sensitive Z-data. ▪ Release Management: Managed the Software Lifecycle via STMS (Transpo

Worked as a Senior Web Analyst and Full Stack Developer building complex web solutions for clients including PDVSA, CANTV, Banco Mercantil, and CAF. Developed web applications using ASP.NET (C#), JavaScript, AJAX, and CSS, implemented SOAP/XML web services, and performed database design/optimization with Oracle/SQL Server using stored procedures and transactional SQL.

Description (Para Copiar y Pegar en Inglés):

📍 Clients: PDVSA (Oil & Gas), CANTV (Telecom), Banco Mercantil, CAF. Focus: Software Engineering Foundations, High-Performance Databases & Web Architecture.

Prior to my SAP career, I operated as a Senior Full Stack Developer building complex web solutions for critical industries. This background provides the "Web DNA" I currently apply to SAP Fiori an