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Niki Stefanov

@nikistefanov

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Data Operations and Insight Intern at Experian Bulgaria, creating Tableau dashboards and preparing data for analysis.

Bulgaria

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What I'm looking for

I'm seeking opportunities in Data Analytics, Business Intelligence, and Reporting within an international environment.

At Experian Bulgaria, I created Tableau dashboards and visualisations to support reporting and analysis. I used Tableau Prep to prepare data, Excel to support validation, and SQL to retrieve and validate data, including work to identify duplicate accounts.

During my internships at DZI, I supported data migration and worked with Power BI, administered a website, and used Power Automate for quality assurance and testing. I hold a Master’s degree in Big Data and Analytics and a Bachelor’s degree in Business Informatics and Communications.

Experience

Work history, roles, and key accomplishments

Data Operations and Insight Intern

Experian Bulgaria

Jan 2026 - May 2026 (4 months)

Created dashboards and data visualizations in Tableau to support reporting and analysis. Used Tableau Prep and SQL for data preparation, validation, and quality tasks, and helped identify and eliminate duplicate accounts.

Tableau Tableau Prep Excel SQL Data Visualization Data Quality

Maintenance Assistant

Sunriver Resort

Jun 2025 - Sep 2025 (3 months)

Maintained cleanliness and order in a private residence.

Intern in the Systems Support Department

DZI

Feb 2025 - Jun 2025 (4 months)

Supported and coordinated data migration, worked with Power BI, and communicated and collaborated with teams.

Power BI Data Migration Teamwork

Kitchen Worker

Box Lunch

May 2023 - Sep 2023 (4 months)

Worked in a kitchen and provided customer service.

Office Administrator

Econt

Jun 2022 - Sep 2022 (3 months)

Received, dispatched, and processed shipments, provided customer service and support, and handled financial operations and documentation using company systems and technical equipment.

Customer Service Finance Operations Documentation Company Systems

Education

Degrees, certifications, and relevant coursework

University of National and World Economy (UNWE)

Master's Degree, Big Data and Analytics

2025 -

Pursuing a Master's degree in Big Data and Analytics, expected to complete in October 2026.

University of National and World Economy (UNWE)

Bachelor's Degree, Business Informatics and Communications

2021 - 2025

The program provided knowledge in business analysis, information systems management, and data visualization, developing analytical and communication skills.