Guilherme Braga

Computer Engineer graduated At University of Brasilia

Focused on Data Engineering and Data Science. Providing ongoing AI and Analytics consultancy.

Specialist in Data Science and Big Data certified by PUC Minas Gerais
Currently pursuing a Master's Degree in Statistics at University of Brasília

My professional background is centered on ongoing analytics consulting (mapping problems and managing valuable solutions in the context of multidisciplinary agile teams), data engineering, database management, data science, and process mapping using BPMN and ontologies. I bring hands-on experience with Python (Pandas, Spark), R language for statistical analysis, C/C++, JavaScript (Node.js), complemented by foundational experience in backend development (Django).Beyond technical expertise, I am known for my collaborative mindset, analytical thinking, and ability to transform ideas into business value. I thrive in multidisciplinary environments, where active listening, teamwork, and clear communication are just as important as technical skills.I currently work as an IT Analyst at Bank of Brazil, where I focus on data engineering and data science initiatives, including—but not limited to—machine learning solutions. My work primarily leverages Apache Spark and Hadoop ecosystems to deliver scalable, data-driven outcomes.

Early days

I am a native Portuguese speaker, and I hold both the DELE C1 Certificate in Spanish (earned in 2020) and the Cambridge English C1 Advanced Certificate with a score of 199 (earned in late 2021). I firmly believe that mastering foreign languages is essential to true freedom—the ability to understand and be understood across borders.Attending the University of Brasília (UnB)—one of Brazil’s most prestigious and competitive institutions—was a deliberate and transformative decision. The Computer Engineering program at UnB consistently ranks at the top nationally, regularly achieving the highest rating on Enade, Brazil’s National Student Performance Exam. I was admitted in 2017, having been granted early completion of high school in order to fully dedicate myself to this academic pursuit.Between 2020 and 2023, I was actively engaged in research focused on Information Systems and Open Linked Data, including two separate research cycles. My Undergraduate Final Thesis, titled the Calliandra Project, was funded by FAP-DF (Federal District’s Research Support Foundation) and is publicly available on my GitHub. During this period, I also completed two internships, including a role at Anatel (Brazil’s National Telecommunications Agency), where I worked as a Data Engineer.My contributions as an undergraduate researcher were formally recognized as among the best of the year at UnB. I continued to advance the field of web semantics through my thesis, which resulted in both a robust written paper and the publication of a academic article.As a graduated computer engineer since 2023, I worked professionally as a backend developer in Typescript for a short period of time. During this time, I helped develop an internal system for the company I worked at an integration of GPT 3.0 into the responses given to users through WhatsApp automation. Months later, the IT community recognized this type of solution as Retrieval Augmented Generation, something that is clearly part of our reality today. At that time in my life, I understood that even though I had good experience in development, I should focus on AI consulting, with an emphasis on data processing and data science. Therefore, I returned and expanded what I did as an intern at Anatel in my next job.

Right now

In my position at Bank of Brasil, my primary role is to provide AI and Analytics consultancy for a team that deals with Payment Methods. I am part of the Artificial Intelligence and Analytics Unit (UAN).My main responsibilities in this position are outlined below, along with the key areas I actively focus on to drive impact and deliver results:- Perform validation, monitoring and delegation of tasks to a technical team
- BPMN for process mapping (mostly regarding data extraction tasks)
- Develop pipelines in Python using the company's interal Apache Hadoop datalake systems.
- Machine Learning Process architecture and development
- NLP and RAG-based systems architecture and development
- Data Extraction with Databricks/Azure DevOps
- Development of simple dashboards in PowerBIAlso, I am pursuing a master's degree in Statistics at the University of Brasília. Since 2026, as a regular student after a period as a non-degree student. In this context, I intend to develop my skills in the field of computational statistics.

My free time and the future

My hobbies include mostly boardgames, PC gaming (and building), going to the movies, hiking and amateur photography. I'm a long-time casual Magic: The Gathering player, focusing mostly on the EDH format, and I also like to play tabletop Warhammer 40k when possible.You are more than welcome to visit my Github, where I showcase some of my skills and share freely accessible material related to the Computer Engineering curriculum at UnB for anyone to study. Some of my favorite repositories are:

Work Experience Timeline

FORMAL EDUCATION TIMELINE

CERTIFICATIONS

I presented my websemantics research (work in progress as an undergraduate researcher) at:- 2022 WPOS (UnB's Computer Science Departament Workshop)
- 27th Congress of Scientific Initiation of UnB/18th Congress of Scientific Initiation of Distrito Federal
- UnB as an organizor of an extension activity that was part of the Digital Journalistic Writing course (in late 2022, Unb's "Semana Universitária")Publications Regarding Websemantics:
- ApliCom 2023 (at the Federal University of Maranhão) - link
- CISTI 2023 (18th Iberian Conference on Information Systems and Technologies in Aveiro, Portugal) - linkRegarding LLMs- Pipeline for AI-generated News Detection (2026) - link to preprintAnd I'm continuously updating my Medium feed with content on a variety of topics, in texts both in English and Portuguese.

Continuous Posts on my Medium

• Medium Post - NAS setup on Raspberry Pi

PURPOSE

The purpose of a good engineer, and maybe of any professional in IT, is not merely to deliver code, just as the purpose of a bricklayer is not to stack bricks, but to build a house.In the same way, the role of a data professional goes beyond writing scripts or training models. It is about understanding problems, making informed decisions, and delivering solutions that generate real, measurable value. The goal is to produce outcomes that, in one way or another, use technology responsibly and ethically to improve quality of life over time and not merely to deploy yet another agentic LLM in order to mindlessly increase "this semester's KPI".A good professional is defined by continuous learning, intellectual curiosity, and the discipline to apply knowledge effectively. To never answer "I don't know" and instead answer "I don't know yet, just give me time and resources".Tools, languages, and frameworks evolve but the underlying responsibility remains the same: to transform knowledge into impact. "Individuals and interactions over processes and tools".

CLASSROOM NOTES

- Knowledge Intensive Process Ontology (Final Presentation - 2023) Link
- Aplicom 2023 Link
- Neural Networks Final Project (AI Detected Fake News- 2025) Link
- Seminar on LLM Fine-Tuning (2025) Link
- Understanding Deep Learning Chapter 15 (2025) Example 1 Example 2

CONTACT

The best way of contacting me is sending a direct message on LinkedIn first. You may also send me an email, but there will be faster replies via LinkedIn most likely.

Brasília, Distrito Federal
Brazil, 2026gbraga[email protected]

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