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Melani Juliana Tirado Salas

Data Analyst
Habilidades
(Auto-avaliação)
Analysis of data 90%
Power BI 80%
Excel 80%
Python 60%
SQL 60%
línguas
English:
  • Fala
    50%
  • Leitura
    50%
  • Escrevendo
    50%
Spanish:
  • Escrevendo
    100%
  • Leitura
    100%
  • Fala
    100%
Perfil profissional

Data Analyst with a background in Economics and a Diploma in Data Analytics. Practical experience in data analysis, modeling, and interpretation for strategic decision-making. Advanced proficiency in Power BI and Excel, as well as knowledge of automation using Machine Learning techniques and intermediate Python skills. Ability to design technical solutions and provide support for existing developments.

Experiência de trabalho

Data Analyst (Academic Project)
universidad del magdalena | Junho 2025 - Junho 2025
habilidades usadas

I developed a predictive model using Random Forest to identify students at risk of social media addiction, using data from 705 records. I achieved 99.3% accuracy and an F1 score close to 1.0, validated with cross-validation (98.4% average accuracy). I used Python (pandas, matplotlib, seaborn, sklearn) for data cleaning, analysis, and visualization, identifying key variables such as sleep, mental health, age, and academic impact.

realização principal

I identified key predictor variables (such as hours of sleep, self-assessed mental health, age, academic impact, and most used platform) that allow classifying students at risk of social media addiction, supporting the design of preventive strategies in mental health and education.

Data Analyst (Academic Project)
universidad del magdalena | Maio 2025 - Maio 2025
habilidades usadas

I analyzed over 73,000 ICFES Saber 11 test results from Antioquia (2017) to identify factors associated with academic performance. I developed a linear regression model in Python to predict critical reading scores, finding that socioeconomic status, access to books, the internet, and a computer at home significantly influence the results. I visualized the findings in an interactive dashboard in Power BI that highlights the relationship between family context.

realização principal

I identified socioeconomic and family environment variables (such as number of books at home, internet and computer access, and social stratum) that significantly impact the ICFES critical reading score, providing useful evidence for educational policies focused on equity and performance.

Portfolio Assistant
alrovilla y cia sas | Abril 2020 - Novembro 2022 (2 years 7 months)
habilidades usadas

Automation of reconciliations and accounting processes with Excel, support in financial reports, organization and digitization of accounting information, customer service and balance analysis.

realização principal

Automation of reconciliations and accounting processes with Excel. Generation of financial reports and digitization of accounting information.

Formação acadêmica
Data Analyst
Universidad del magdalena | Undergraduate
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