Education

  • Professional Master's Degree in Applied Computing
    Instituto Federal do Espírito Santo
    Serra, Brazil
  • Specialization in Software Engineering
    Universidade Estácio de Sá
    Vitória, Brazil
  • BSc in Computer Science
    Faculdades Integradas Espírito-Santenses
    Vitória, Brazil

Experience

  • Senior Software Engineer
    Working on the evolution of a Java system, with responsibility for architecture decisions and task planning. Continuing the development, mentoring of new developers, estimation and technical documentation activities.
    Accenture
    Vitória, Brazil
  • Software Engineer
    Developed enhancements and bug fixes for web and desktop systems, including unit tests and the creation and maintenance of database procedures and scripts. Mentored new developers, estimated tasks and documented processes and technical knowledge. Main technologies: Java, Maven, C#/.NET, .NET Core, Vue.js, JavaScript, HTML, CSS, Git and Oracle. Key contributions: created a knowledge base to retain team knowledge and ease the onboarding of new colleagues; migrated a system from Java 6 to Java 8; rolled out a new business area in a logistics and mobile equipment optimization system; normalized the database; and built a cargo prioritization feature for a ship deck, based on the type of product being transported.
    Accenture
    Vitória, Brazil
  • Junior Developer
    Developed APIs and system enhancements for Web and Desktop platforms, including the creation and optimization of database procedures and scripts.
    Dacasa Financeira
    Vitória, Brazil
  • Junior Developer
    Documented and analyzed software bugs to improve system stability and long-term maintenance. Developed database procedures, data scripts, and complex queries for business reporting.
    Inflor Consultoria e Sistemas
    Vitória, Brazil
  • Trainee Developer
    Started in the SAP team, developing bug fixes and minor system enhancements while providing technical support to clients. Transitioned to the Forest Management System team, performing deep-dive ticket analysis, client troubleshooting, and system adjustments.
    Inflor Consultoria e Sistemas
    Vitória, Brazil
  • Intern Developer
    Internship at the software factory, developing SharePoint systems using C# and SQL Server databases.
    Prosperi
    Vitória, Brazil

Publications

  • Evaluation of High-Frequency Information for Deepfake Detection Using a CNN–ViT Architecture in a Cross-Dataset Scenario

    Authors: Erikson E. Ferreira, Samla A. Tavares, Kelly S. A. Gazzoli, Karin S. Komatti

    SIBGRAPI • 2026

    With the advancement of deep learning techniques, the production of deepfake media has become increasingly sophisticated, raising the difficulty of detection. One of the main challenges is the low generalization capacity of models, which frequently show performance drops in scenarios different from those used in training. This work investigates the use of high-frequency filters Spatial Rich Models (SRM) and Sobel integrated into the CrossViT architecture to enhance deepfake detection. The models were trained on a subset of the Deepfake Detection Challenge (DFDC) dataset and evaluated under both in-dataset (DFDC) and cross-dataset (Celeb-DF v2 and FaceForensics++) scenarios. The results indicate that high-frequency filters consistently improve the performance of the methods, with the SRM applied to the L-Branch reaching the best metrics in the in-database DFDC scenario (AUC of 0.847) and in the cross-database Celeb-DF v2 scenario (AUC of 0.755), while providing SRM-filtered images to both CrossViT branches achieved the best result on FaceForensics++ (average AUC of 0.755).

Skills

Programming Languages

Java, Python, C#/.Net, Javascript

Tools

Oracle Database, Microsoft SQL Server, Git

Languages

Portuguese (Native), English (Advanced), Spanish (Beginner)