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Oana Chiorean

Oana Chiorean

Certified

Business Intelligence Analyst

Alten | Romania

Technologies

My Portfolio Highlights

My New Track

Associate Data Analyst

My New Course

Understanding Data Science

My New Course

Intermediate Python

My New Track

Associate Data Analyst

BI Specialist, connecting people, processes and data.

My Work

Take a look at my latest work.

certification

Data Analyst Associate

RPythonSQL
course

Intermediate Python

Python
course

Intermediate DAX in Power BI

Power BI
project

Investigating Netflix Movies

RPython
certification

Data Analyst Associate

RPythonSQL

My Certifications

These are the industry credentials that I’ve earned.

Data Analyst Associate

Data Analyst Associate

Other Certificates

Microsoft PowerBi Data Analyst Associate (PL-300)

DataCamp Associate Data Analyst

DataCamp Course Completion

Take a look at all the courses I’ve completed on DataCamp.

Courses

Introduction to Python
Introduction to SQL
Understanding ChatGPT
Introduction to Power BI

My Work Experience

Where I've interned and worked during my career.

Alten | Nov 2023 - Present

BI Specialist

As a BI Specialist, I focus on Power BI development, data automation, and KPI standardization to drive impactful business intelligence solutions. My key responsibilities include: ▪︎ Extracting, validating, and integrating data from Impala to ensure accurate and reliable Power BI dashboards. ▪︎ Optimizing Power BI performance by improving data model efficiency, reducing refresh times, and streamlining DAX calculations. ▪︎ Automating manual reporting workflows, eliminating Excel-based processes, and integrating source data directly into Power BI to improve efficiency and accuracy. ▪︎ Standardizing and integrating fragmented reports into a unified, aesthetically cohesive Power BI ecosystem with a centralized app and intuitive navigation. ▪︎ Facilitating discussions to ensure KPI alignment across departments, addressing discrepancies and improving consistency in metrics. ▪︎ Collaborating in an agile framework, managing tasks in Azure, and contributing to sprint-based development efforts. ▪︎ Empowering business users through self-service reporting, reducing reliance on manual data preparation. ▪︎ Sharing knowledge and best practices, helping colleagues enhance their Power BI skills and ensuring standardized reporting across the team.
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Vertiv | Apr 2021 - Nov 2023

Senior Data Analyst

In this role within the Global HRIS team, I drove data analysis, reporting, and process automation to support global HR strategies. Key contributions include: ▪︎ Led the analysis of complex datasets, crafting Power BI dashboards and visualizations to communicate key workforce insights effectively to stakeholders. ▪︎ Developed and optimized OTBI reports, working with stakeholders to tailor reports that met evolving HR needs, and collaborated with the Oracle BI Publisher team for testing and validation. ▪︎ Automated R-based processes to identify and resolve data discrepancies, improving data quality across HR functions. ▪︎ Designed Power BI dashboards with Row-Level Security (RLS) to ensure appropriate data access, empowering HR teams to make data-driven decisions. ▪︎ Documented processes, automation procedures, and reporting workflows, creating detailed guides to maintain consistency and continuity in reporting practices.

Vertiv | Mar 2020 - Apr 2021

Global HRIS Data Analyst

As a Data Analyst for the Global HRIS team, I shifted the HR reporting focus from regional to global analytics, contributing to more strategic insights for executive decision-making. Responsibilities included: ▪︎ Analyzing global HR data, including headcount variances, diversity metrics, and employee engagement, to support strategic workforce planning and decision-making. ▪︎ Automated repetitive reporting tasks using R programming, significantly improving reporting efficiency and accuracy. ▪ Enhanced Power BI dashboards by advancing DAX and M skills, providing more detailed and flexible insights. ▪ Improved Oracle BIP reports with SQL, enabling more tailored reporting to meet business needs. ▪ Partnered with cross-functional teams to align HR data with other business functions, providing a cohesive view of organizational performance.

Vertiv | Feb 2018 - Mar 2020

EMEA HR Data Analyst

As an HR Data Analyst for the EMEA region, I focused on data analysis and reporting to support regional HR requirements and optimize decision-making. Key achievements include: ▪ Supported the implementation of the Oracle HR system, focusing on database creation, testing, and ensuring system alignment with regional HR needs. ▪ Led user training sessions and collaborated with the global HRIS team to develop custom Oracle reports, improving HR reporting efficiency across teams. ▪ Created OTBI reports, focusing on data extraction and reporting key insights to EMEA HR leadership. ▪ Developed automated R processes to streamline recurring tasks, ensuring high-quality data and efficient reporting. ▪ Created Power BI dashboards for workforce planning and employee performance, enhancing reporting capabilities for regional HR teams. ▪ Worked cross-functionally to align HR data with business needs, providing valuable insights into workforce trends and integrating financial data for improved decision-making.

My Education

Take a look at my formal education

Bachelor in EconomicsBusiness Faculty, Babes Bolyai University | 2011

About Me

Oana Chiorean

Data professional with experience in Supply Chain and HR analytics, currently learning Python to enhance data processing, visualizations, and automation skills.

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