Open to opportunities

Lina Martínez

@linamartnez

Message

Data Analyst with Power BI and SQL, specialized in executive reporting and interactive dashboards.

Colombia

Message

What I'm looking for

Busco un rol de Analista de Datos donde pueda construir tableros en Power BI y análisis con SQL, asegurando calidad de datos y comunicando hallazgos a dirección para impulsar decisiones; valoro proyectos con impacto, rigor y autonomía.

I'm a Data Analyst with a strong background in finance and accounting, focused on turning complex data into executive reports and interactive dashboards that support decision-making.

I specialize in data validation and quality control, exploratory analysis, and communicating findings clearly to leadership teams, even on technical topics.

In independent projects, I built complete analytical dashboards in Power BI Service, applying star schema modeling, advanced DAX, Power Query, and dynamic segmentation on datasets with 7,000+ records.

I also worked as a Risk and Data Quality Analyst, processing and analyzing 10,000+ monthly records, running data quality processes, and delivering reports with specific recommendations for management.

Experience

Work history, roles, and key accomplishments

Current

Data Analyst

Current

Independent

Dec 2024 - Present (1 year 7 months)

Built analytical dashboards in Power BI Service with executive summary pages covering key findings, risks, and recommendations. Applied star schema modeling, advanced DAX, and Power Query on datasets of 7,000+ records, including a churn analysis (28.4% attrition, $137K monthly revenue at risk) and an HR analytics project (16.1% attrition, concentrated in year one).

Power BI DAX Power Query Análisis de Datos

Current

Public Accountant

Current

Independent

Jan 2017 - Present (9 years 6 months)

Manage accounting and tax reporting for small and medium businesses, with periodic financial statement analysis.
Advise on individual income tax filings during the annual August-October period.

Accounting Account Reconciliation Taxes Tax Reporting Financial Statement Analysis Financial Statement Reporting

Risk and Data Quality Analyst

Insured Solutions, Inc.

Apr 2018 - Jun 2021 (3 years 2 months)

Processed and analyzed 10,000+ monthly overdue portfolio records to detect anomalies and critical patterns in financial data. Executed data validation and quality control processes, delivering periodic reports with actionable recommendations for management.

Pivot Tables Data Analysis Excel Excel (Formulas