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@marianagonalves
Junior Data Scientist skilled in Python, SQL, and Power BI.
PortugalI am a passionate Junior Data Scientist with a strong foundation in Python, SQL, and Power BI. My recent experience as an AI Research Intern at Infonet allowed me to develop and deploy TaxBot, an AI-powered assistant for EU tax queries. This role honed my skills in system design and prompt evaluation using advanced techniques such as LangChain and OpenAI models.
Prior to my internship, I managed a guest house for six years, where I was responsible for daily operations and ensuring exceptional service, which resulted in consistently positive reviews. Additionally, during my time as a Production Management Intern at Hospital de Braga, I implemented block scheduling optimization models that significantly increased operational efficiency. My academic journey includes an MBA in Data Science, where I graduated with distinction, focusing on machine learning and data analysis.
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Work history, roles, and key accomplishments
Infonet
Jan 2025 - Dec 2025 (11 months)
Developed and deployed TaxBot, an AI-powered assistant for EU tax queries using Prompt Engineering techniques. Focused on system design and prompt evaluation with LangChain and OpenAI models.
Guest House
Jan 2018 - Dec 2024 (6 years 11 months)
Managed daily operations including reservations, guest reception, and coordination of cleaning and maintenance teams. Delivered high-quality service, reflected in consistently positive reviews on booking platforms.
Hospital de Braga
Jan 2018 - Dec 2018 (11 months)
Implemented block scheduling optimization models to increase the number of exams performed without increasing costs. Focused on Operational Research and strategic process management.
Degrees, certifications, and relevant coursework
UAMBA Data Science, Data Science
2024 - 2025
Grade: 20/20
Studied Python, Machine Learning, Power BI, and SQL. Graduated with distinction, achieving the highest possible grade (20/20). Completed a final project on the analysis of cyberattacks (2015-2024) and future trend prediction using classification algorithms.
UMMaster's in Systems Engineering, Systems Engineering
2016 - 2019
Activities and societies: Erasmus Programme at Technische Universiteit Eindhoven, Netherlands
Focused on Process Optimization, Forecasting Methods, and Operational Research. Completed an Erasmus Programme at Technische Universiteit Eindhoven, Netherlands.
UMBachelor's in International Business, International Business
2013 - 2016
Studied Business Management, Financial Management, Marketing, and Internationalization Projects.
Software and tools used professionally
PortugalYou can contact Mariana and 90k+ other talented remote workers on Himalayas.
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