William R.
Back-end and Systems Engineer

Skills

Asp.net

Microsoft Sql Server

Javascript

Microsoft Azure

React

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Bio

An experienced professional in developing and maintaining systems for web, desktop, and database applications across diverse sectors, proficient in leveraging Microsoft technologies. Specializes in system integration for corporate environments, web application development, API creation and management, development of Windows services, and integration with payment gateways.

Developer
3/1/2022 - 12/1/2023

Spearheaded maintenance and development of critical systems for the Court of Auditors, including a digital document signing system, lobby control, and system access control. Gained expertise in implementing secure digital signing protocols to ensure document integrity and authenticity. Implemented sophisticated access control mechanisms to regulate and monitor system usage. Developed automated lobby control systems to enhance security and efficiency. Employed a range of technical tools and frameworks to ensure robust, secure, and efficient system performance, contributing to the modernization and digital transformation of a government institution.
Senior .Net Developer
3/1/2021 - 5/1/2022

Led the implementation of new features for the marketplace backend, focusing on enhancing the overall functionality and user experience. Contributed to both the backend and frontend development of the administrative area, ensuring seamless integration and maintenance of various features. Technical expertise developed includes proficiency in backend development and frontend technologies, with an emphasis on creating robust and user-friendly systems.
Senior Systems Analyst
1/1/2019 - 3/1/2021

Developed and maintained systems for a regional tax administration entity, focusing on the Tax Administration System and the API for GNRE - National Guide for the Collection of State Taxes. Executed integration API tasks with the Attorney General's Office, enhancing interoperability between the systems.
Senior Systems Analyst
3/1/2015 - 1/1/2019

Developed the SGP web system, a sophisticated Project Management System incorporating IPA and PMI methodologies. Provided support for the WBS system and worked on the Prix-Evte System, specifically focusing on Braskem's Investment Technical and Economic Feasibility Study Model. Additionally, contributed to the development of the company’s portal.
Senior Systems Analyst
12/1/2011 - 3/1/2015

Oversaw and maintained the State of Bahia Government Purchasing Portal, ensuring its continuous operation and reliability. Managed the Contingency Registration System, maintaining accuracy and data integrity. Administered the State's Materials and Patrimony System (SimpasWeb), enhancing its usability and performance. Supervised the Registration Control System, facilitating efficient user management processes. Handled the Air Ticket Control System, optimizing its functionality for seamless operation.
Senior Systems Analyst
5/1/2005 - 12/1/2011

Maintained and enhanced the Government of Bahia State's Procurement Portal, leveraging expertise in web maintenance and government procurement workflows. Implemented the State of Bahia's Materials and Heritage System, showcasing skills in system design and resource management. Played a key role in maintaining Enrollment Control systems, ensuring smooth operation and data integrity. Managed the Airfare Control system, demonstrating proficiency in handling logistics and travel management systems.
Mid-Level Systems Analyst
12/1/2001 - 4/1/2005

Contributed to the development of the SIMPASWEB system's Price Bank module, which is part of the Materials, Property, and Services System for the Government of the State of Bahia. Handled maintenance and updates for the State Government's Electronic Purchasing Portal. Developed proficiency in Classic ASP and SQL Server, ensuring robust integration and functionality for state-level procurement processes.
Junior Systems Analyst
4/1/1998 - 4/1/2001

Implemented and maintained the Revenue/Financial Control system and Intranet, as well as client/server systems including Customer Control, Materials Inventory, Vehicle Fleet Supply, and Vehicle Fleet Maintenance. Executed the implementation and maintenance of the SAESC client/server system for a state court of accounts. Developed technical expertise in Visual Basic 6, SQL Server, and Clipper.
Junior Developer
7/1/1996 - 3/1/1998

Developed expertise in maintaining financial systems, specifically focusing on Accounts Payable/Receivable, Checks, and Billing. Utilized Clipper extensively to ensure smooth operation and accurate processing within these financial domains.
Junior Developer
3/1/1995 - 12/1/1995

Managed the maintenance of multiple key systems including Accounts Payable and Receivable, Inventory, and Accounting. Acquired in-depth expertise in using Clipper for efficient system operations and troubleshooting.