Gelson E.
Data Engineer

Skills

Spring Boot

Cascading Style Sheets

Cobol

Pl/sql

Html

Java

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Bio

A seasoned Senior System Analyst with over 13 years of experience specializing in system and project management within the financial sector, covering areas such as billing, CRM, prepaid platforms, mediation, interconnection, accounting, and tax. Expertise includes coordinating and conducting workshops, training teams, and managing user relationships effectively. Proven ability to oversee outsourced teams, ensuring adherence to deadlines and prioritization of demands through meticulous project scheduling. Possesses a comprehensive understanding of technical, functional, commercial, and administrative aspects in financial, accounting, and tax domains. Proficient in programming languages such as Mantis, COBOL, CICS, JCL, TDS, and VASAM.

Systems Specialist
10/2/2019 - Present

Developed a robust skill set in Cobol systems development for a financial services partner, achieving notable accomplishments in various complex projects. Participated in a two-week selection process for nine Balance-Line Cobol Batch programs, where eight programs tested successfully on the OpenCobol platform. Demonstrated expertise by overcoming a challenge involving 15 Cobol Batch Algorithms, successfully completing 14 using the same platform.

Contributed to the BCAD project in a TSO environment by implementing eight batch programs for customer card registration. Delivered a barcode digit conversion project by migrating a batch program to DB2, optimizing bank, bill, and utility processing. Played a critical role in the DEJUR Legal Demand Project within a TSO environment, developing two DB2 programs and producing JCLs for communication messaging with Bacen. Enhanced bank department operations in the BDEP project by developing solutions for the activation and blocking of financial terminal access and exit via badge. Proven proficiency in DB2, TSO environment, and JCL scripting, coupled with a track record of successfully delivering complex technical solutions on time.
Senior Systems Analyst
12/2/2004 - 11/2/2017

Specialized in systems analysis and team management for IT projects and outsourcing with over 13 years of experience. Leveraged extensive technical, functional, and commercial knowledge to drive the successful delivery of software projects. Demonstrated excellence in documenting and understanding complex business processes coupled with a systemic vision of emerging IT technologies. Played a pivotal role in implementing critical revenue systems, accounting for 40% of the company’s billing, employing agile methodologies, security optimization, application enhancement, and robust reporting solutions. Focused on performance optimization, simplification of batch processes, and integration of interfaces utilizing Service-Oriented Architecture (SOA) and AWS principles.

Oversaw the migration of five legacy systems into a streamlined, optimized Convergent Co-Billing system employing Java 8 and SOA/BD 12C architecture. Enhanced system functionalities and batch processes while adhering to authenticated access security standards. Controlled prioritization of IT demands and managed multiple outsourcing teams to address backlog and projects, audit services, and regulatory data generation. Supervised the integration and migration processes within Telecom/Abr services, collaborating with various companies across Brazil.

Directed the management of unilateral and bilateral Roaming agreements, ensuring efficient handling and exchange of TAP files for VOICE/SMS/GPRS. Coordinated with telecom operators for the seamless documentation and management of system interfaces. Facilitated KPIs design aimed at mitigating revenue losses and implemented comprehensive billing systems in conjunction with the company's revenue assurance system.

Led a team of analysts and external partners in two significant phases (2001 and the recent term) of implementing the Interconnection System (Detraf), critical for facilitating 40% of the company’s revenue. Successfully managed the commercial sale and implementation of the Co-Billing Entrant system to another telecom company and negotiated the cost-free development of a new Co-Billing Sainte system for the partner company.

Managed the system for telecom stores using the MGE–Sankhya platform, ensuring efficient inventory control and billing operations. Executed government fiscal updates through system releases and led user training sessions encompassing Stores, Telesales, and Backoffice operations. Specified and facilitated the construction of SOA architecture interfaces with external partners to enhance system integration.
Developer
8/2/1986 - 11/2/1998

Experience in designing and managing systems for inventory control, payroll, and finance. Developed specialized expertise in COBOL, CICS, JCL, and TDS for mainframe applications. Played a pivotal role in programming and maintaining systems using Mantis on the mainframe. Further honed technical skills through extensive work on IBM-4341 and Cobra equipment. Demonstrated thorough understanding of system analysis and programming tasks, progressively advancing from data transcription and junior positions to mid-level and senior roles. Acquired a diverse set of competencies, including system integration, code optimization, and efficient data processing techniques, ensuring scalable, maintainable, and robust system performance.

Mathematics at Central Brazil Association for Education and Culture - Abracec
1986 - 1987
Systems Analysis at Federal University of Uberlândia-UFU
1995 - 1995