Open to opportunities

GEORGE THANOGIANNIS

@georgethanogiannis

Message

Entry-level BI/Data Analyst with strong accounting and data-quality focus.

Greece

Message

What I'm looking for

I am seeking an entry-level BI/Data Analyst role where I can apply accounting discipline, strengthen data quality and ETL skills, work collaboratively, and grow toward more advanced analytics responsibilities.

I am an entry-level BI/Data Analyst with a background in accounting and practical experience in data quality, stewardship, and analysis. I have contributed to database creation and maintenance, evaluated digital maps and AI chatbot responses, and worked on account reconciliation and administrative support, demonstrating attention to detail and reliability.

I bring hands-on experience with SQL and Python, visualization tools such as Tableau and Power BI, and familiarity with ETL processes and data preparation. I am motivated, team-oriented, and focused on delivering accurate, usable data to support business intelligence and analytics initiatives.

Experience

Work history, roles, and key accomplishments

Current

AI & ML Project Contributor

Current

Rws Group

Jun 2023 - Present (2 years 5 months)

Contributed to optimization of AI chatbot responses by analyzing prompts and tuning models to improve response relevance.

Machine Learning NLP TensorFlow Python Model Evaluation Prompt Tuning Data Analysis

Junior BI/Data Analyst

Veeva Systems

Aug 2024 - Aug 2025 (1 year)

Contributed to creation and maintenance of healthcare professional and organization databases, highlighted data quality issues and provided corrective examples to reduce repeated errors.

Data Quality ETL SQL Data Validation Data Cleaning Data Visualization Tableau Power BI

Data Steward

Veeva Systems

Sep 2023 - Aug 2024 (11 months)

Supported database updates and profile management for healthcare entities across Greece, Cyprus and Malta, ensuring data completeness and accuracy.

Data Governance Data Entry SQL Data Quality Attention To Detail

Data Analyst - Maps Evaluator

Peroptyx

Jun 2023 - Sep 2023 (3 months)

Evaluated digital maps and user query satisfaction to improve mapping accuracy and search result relevance.

Geospatial Evaluation Data Annotation Quality Assurance SQL Python Remote Collaboration

Accounting Assistant

Kirkinis Accounting Office

Dec 2022 - Dec 2022 (0 months)

Reconciled ledger accounts against bank statements monthly and reviewed postings for accuracy and completeness.

Accounting Excel Attention To Detail Financial Reporting

Administrative Assistant

E-VIP Events and Congresses

Dec 2021 - Jun 2022 (6 months)

Provided administrative support for medical conference organization, coordinating logistics and event documentation.

Event Coordination Administrative Support Scheduling Communication Documentation

Education

Degrees, certifications, and relevant coursework

Athens University of Economics and Business

Bachelor of Science, Accounting and Finance

2013 - 2018

Grade: 7.65/10

Activities and societies: Erasmus exchange at Tomas Bata University (Zlin, Czech Republic)

Completed a Bachelor of Science in Accounting and Finance with coursework including accounting, finance and related quantitative subjects; participated in an Erasmus exchange at Tomas Bata University in Zlin.