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Jonathan Stgo
@jsantiagom
Data Analyst and Business Intelligence Specialist
Mexico
English, Spanish
About me
I'm Jonathan Santiago, a Data Analyst with 6+ years of experience turning raw data into insights. I specialize in Python-based data cleaning, KPI dashboards, and automation. I combine strong technical skills with a clear business focus to deliver clean, reliable, and valuable results. My work includes transforming messy datasets, building custom dashboards, and automating tasks to help clients make informed decisions based on accurate data.
Skills
Jonathan Stgo
Offline •
See my services
Data Cleaning
I will clean and format your data ready for analysis
BI Analytics
I will do data analytics and turn your data into actionable insights
Portfolio
Work experience
Freelance Senior Data Analyst
Self employed / Freelance • Self-employed
Jun 2023 - Present • 3 yrs 2 mos
Independent Data Analyst & BI Consultant providing end-to-end Data Analytics and Business Intelligence solutions for organizations across multiple industries, including Finance, Insurance, eCommerce, and Operations. Analyzing business data to identify trends, patterns, performance gaps, and opportunities, helping organizations solve business problems and make data-driven decisions. Building interactive Power BI dashboards and SQL-based reporting solutions to monitor KPIs, revenue, sales, customer behavior, operational performance, and other critical business metrics. Using Python (Pandas), SQL, Power BI, and Excel to perform data analysis, exploratory analysis, statistical analysis, and data transformation to turn raw data into actionable insights. Translating business questions and requirements into analytical solutions, defining relevant KPIs, analyzing root causes, and presenting findings through clear reports and visualizations. Developing automated analytical and reporting solutions that reduce manual work, improve data visibility, and enable businesses to monitor performance more efficiently. Specialized in turning complex business data into clear insights, identifying problems and opportunities, and delivering practical data-driven solutions that support better business decisions.
Data Analytics Consultant
GNP Seguros • Full-time
Apr 2021 - Apr 2023 • 2 yrs
Performed end-to-end data analysis for the insurance portfolio, focusing on data cleansing, validation, and transformation of large operational datasets (claims, policies, and customers). Built and automated KPI dashboards in Power BI and SQL to support underwriting and business decisions. Developed ETL processes to standardize and canonicalize data from multiple sources, improving data quality and reporting accuracy by 30%.
