Jeiel Moura

- Responsible for the development and stability of core services within the Groceries & Retail, specifically enhancing the shopper experience. - Managed and scaled a critical Golang service handling over 2 million transactions daily, directly contributing to operational excellence and user satisfaction.

I seized the opportunity to launch into freelancing, delivering high-impact solutions for client companies, including Afrosaúde, Petraciolli, and others. I spearheaded the enhancement and development of their applications, driving measurable improvements in functionality, user experience, and performance. By leveraging my technical expertise and innovative problem-solving skills, I consistently exceeded client expectations, delivering tailored solutions that optimized their digital platforms and supported their business growth. Petraciolli: One of my most significant engagements involved solving a critical operational bottleneck for Petraciolli, a law firm managing high-volume litigation with thousands of clients. The project centered on transitioning the firm from a manual, paper-heavy workflow to an automated, digital-first system. To eliminate manual data entry, I implemented advanced OCR engines to convert physical scans into searchable text. The accuracy of digitalization was over 80%, and enabled the team to focus on case strategy rather than administrative overhead. - Implemented reliable cross-service messaging using Kafka with the Outbox pattern. - Delivered optimized data persistence solutions using PostgreSQL and MongoDB. - Architected REST APIs and database integration following Clean Architecture principles. AfroSaúde: - Played a key role in maintaining and developing back-end services for a teleconsultation application, guiding the product from early access to a successful launch. - Restructured and optimized the scheduling module, achieving a 23% increase in API performance and significantly improving system efficiency. - Developed and implemented the payment module, which directly contributed to a 37% boost in revenue by enhancing transaction processes and system reliability. - Supported the project migration following the closure of Geek Business Lab, ensuring a smooth transition and continuity of operations.

Played a pivotal role in designing, developing, and optimizing cutting-edge solutions for clients over 3 years until the company’s closure. Delivered measurable results across two flagship projects, driving significant improvements in performance, revenue, and client satisfaction. - Developed and maintained a comprehensive team management system, streamlining field team operations and enabling in-depth inventory analysis. - Engineered the migration of the project from Express to NestJS, a strategic move that boosted client acquisition by 31% and slashed average maintenance time by 43%. - Designed and implemented a custom reporting feature, automating the generation of documents, spreadsheets, and slides. This innovation unlocked a new revenue tier, increasing overall revenue by 14%. - Contributed to the maintenance and development of back-end services for a teleconsultation application, playing a critical role in its evolution from early access to successful launch. - Restructured the scheduling module, optimizing API performance and achieving a 23% increase in speed, which enhanced user experience and system efficiency. - Collaborated on the development of the payment module, a key feature that drove a 37% surge in revenue, significantly boosting the platform’s financial performance.

Participant of the study group aimed at creating optimized solutions for computational problems.

Spearheaded the development of an advanced image segmentation system utilizing Tsallis entropy as the core algorithm. As the developer, I designed, implemented, and optimized a dedicated image entropy framework, enhancing the accuracy and efficiency of medical image analysis. This project significantly elevated my programming expertise, enabling me to deliver robust, high-performance solutions while streamlining code for maximum effectiveness. Through this experience, I mastered the integration of complex mathematical concepts with practical software development, driving impactful results.

As the developer, I spearheaded the design and implementation of game table generation and advanced metaheuristic algorithms. This project not only deepened my expertise in combinatorial optimization but also honed my ability to critically analyze and apply cutting-edge research. By driving innovative solutions and optimizing complex scheduling constraints, I delivered systems that significantly enhanced efficiency and scalability. This experience strengthened my problem-solving skills and reinforced my passion for tackling challenging computational problems.