Open to opportunities

Carlos Alberto Pellegrini Junior

@carlosalbertopellegr

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Data Analyst focused on data quality, automation, and actionable BI insights.

Ireland

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What I'm looking for

I’m looking for a Data Analyst role where I can improve data quality, automate high-volume workflows, and build self-service Power BI insights—partnering with cross-functional teams to turn operational data into faster, better decisions.

I’m a Data Analyst with 5+ years of experience managing complex operational datasets, data quality, validation, and analytics within multinational energy and renewable sectors. I’ve delivered measurable impact—22% cost reduction, R$3.5M+ in savings, and automated high-volume workflows processing 500+ requisitions daily while reducing turnaround time from 2+ days to same-day processing.

I build self-service Power BI dashboards and deploy data models that consolidate multi-source datasets to improve consistency and visibility, including dashboards that reduced issue resolution time by ~57% (3 weeks to 9 days). I’m hands-on with SQL, Python, and advanced Excel to execute data quality checks, data validation and cleaning, root cause analysis, and reconciliation—always collaborating with cross-functional stakeholders to troubleshoot discrepancies and drive better, data-driven decisions.

Experience

Work history, roles, and key accomplishments

Data Analyst - Procurement

Siemens Energy

Aug 2023 - Feb 2026 (2 years 6 months)

Automated SAP procurement workflows using Excel, processing 500+ requisitions per day and reducing turnaround time while eliminating manual data errors. Built Power BI dashboards and performed data quality/root cause analysis to deliver 22% cost reduction and R$3.5M+ in savings, including ~57% reduction in issue resolution time.

SQL Excel Power BI Python SAP Data Quality Assurance Root Cause Analysis Data Validation Data Cleaning Data Reconciliation Dashboarding KPI Tracking Data Visualization Workflow Automation A B Testing MySQL

Data Analyst Intern - Procurement

Siemens Energy

Jul 2021 - Jul 2023 (2 years)

Supported supplier qualification and onboarding by validating critical supplier data with quality teams and monitoring data quality during assessments. Conducted data quality checks and troubleshooting (including root cause analysis) and managed SAP purchase orders and daily invoice price discrepancy investigations.

SQL Excel Power BI Python SAP ERP Data Quality Assurance Root Cause Analysis Data Validation Data Cleaning Data Visualization KPI Analysis Dashboarding A B Testing MySQL

Electrical Engineering Intern

Ativvus

Aug 2020 - Jun 2021 (10 months)

Developed automated data pipelines using Python and C++ to reduce processing time and built MySQL databases for high-volume datasets. Implemented data validation frameworks to improve data quality reliability and supported hardware development with electronic systems and sensor testing.

Python C++MySQL Data Pipelines Data Validation Data Quality Assurance Input Validation Inconsistency Detection System Testing Electronic Testing

Electrical Project Leadership Program

Aerodesign Team

Dec 2017 - Dec 2019 (2 years)

Led the design of embedded data acquisition systems using C++ and Python, integrating 12+ flight sensors to capture and validate real-time engineering data. Performed data analysis and visualization to extract flight performance metrics supporting aerodynamic optimisation and helped deliver an award-winning electrical project.