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Luis Javier Giraldo Martinez

Data Analyst
Skills
(Self-evaluation)
Python 90%
SQL 90%
Power BI 90%
Vba 80%
Excel 50%
Dax 50%
M 50%
Languages
Ingles:
  • Habla
    70%
  • Lectura
    70%
  • Escritura
    70%
Español:
  • Escritura
    70%
  • Lectura
    70%
  • Habla
    70%
Professional profile

Passionate and results-oriented Business Administrator with a strong commitment to Data Analytics. I offer an in-depth comprehension of report generation and streamlined automation processes to drive efficient decision-making. With advanced proficiency in Excel, SQL, Power BI, and Python, I excel in managing complex data analysis, seamless automation, and compelling visualizations.

Work experience

Data Engineer
janssen ext || direktio s.a | June 2023 - Present (3 años 5 meses)
Used skills

• Developed an automated data extraction solution using Selenium in Python to streamline processes within the organization, extracting vital information from Tableau and Qlik. • Designed and implemented a data validation automation using Pandas in Python, integrating data from various sources to ensure data accuracy and consistency, optimizing data quality across the organization. • Designed and executed complex PostgreSQL queries, integrating multiple data sources to generate critical informati

Data Analyst
nokia ext || v.a.s sas | June 2022 - June 2023 (1 año)
Used skills

• Developed PowerBI dashboards to visualize and present data insights to stakeholders, what facilitated data-driven decision-making across the organization. • Implemented an automated data cleaning process using PostgreSQL to ensure data accuracy and consistency across multiple databases, reducing manual efforts by 80% and minimizing data errors. • Utilized Power Query and DAX expressions in PowerBI and Excel to transform and manipulate data for analysis.

Education experience
Administración de Empresas
Universidad nacional de colombia | Profesional
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