Fábio S.
Back-end and Systems Engineer

Skills

Spring Boot

Java

Mysql

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Bio

Computer Science graduate specializing in ISO 8583, EMV, and financial transactions, with a robust background in Java for backend applications. Demonstrated experience in developing software solutions that demand swift and assertive responses to mitigate risks and uphold corporate integrity. Expertise encompasses designing card capture solutions for bank correspondents, national and international points of sale, and internal projects for large enterprises. Responsibilities included the provision of customer support for expeditious problem resolution and the architecture of new integrations and functionalities.

Proficiency spans team coordination, customer support, PHP, JavaScript, Python, SQL, and AWS.

Recognized for analytical skills, interpersonal abilities, proactive initiative, objective-focused approach, and problem-solving capabilities.

Software Engineer
12/1/2015 - 9/1/2023

Led the delivery planning for the download management application for point of sale terminals, both conventional and Android POS, optimizing communication strategies and meeting customer demands through agile methodology tools, such as weekly planning ceremonies. Acted as the focal point for the implementation, maintenance, and delivery of a financial application for point of sale terminals for a major client. Architected and delivered the second version of the Acquirer Gateway, collaborating closely with other software engineers. Undertook the maintenance and addition of new features for the Acquirer Gateway, and implemented and maintained the AppCore framework to accelerate the development of new POS financial applications using POSWeb, a proprietary middleware.

Developed process improvements and optimized transaction performance, reducing latency time from 8 seconds to 6 seconds for financial applications. Created a simulation tool for exchanging messages with the POS financial application to enhance the development experience. Implemented, maintained, and delivered a financial POS application to replace legacy terminals and expand operational capabilities. Integrated email reporting features into a financial application and proposed vertical scaling solutions for transaction gateway servers. Maintained and updated web applications and managed fraud analysis and application migrations for major clients.
Scientific Initiation
1/1/2015 - 3/1/2016

Involved in the analysis and optimization of the timeout parameter in routers for Content-Centric Networks (CCN), developing a thorough understanding of the timing mechanisms and their impacts on network performance. Leveraged advanced analytical skills to evaluate how timeout intervals influence data retrieval and overall network efficiency. Utilized various simulation tools and network modeling frameworks to simulate different scenarios and assess the impact of varying timeout values on data traffic and latency. Explored and implemented algorithms to dynamically adjust timeout parameters, resulting in enhanced data throughput and reduced packet loss. Worked extensively with protocols and frameworks relevant to CCN architecture to ensure optimal performance and reliability. Demonstrated a strong capability to troubleshoot and optimize router configurations within the specific context of content-centric networking.