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Dimitris Chadiotis

@dimitrischadiotis

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Senior Data Scientist turning complex data into reliable analytics products, pipelines, and dashboards.

Greece

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What I'm looking for

I’m looking for a role where I can lead data science and analytics engineering—building cloud data platforms, ETL pipelines, and stakeholder dashboards—while applying GenAI responsibly to accelerate analysis and workflows.

I’m a senior data professional combining data science, analytics engineering, and cloud data platforms to turn complex datasets into reliable products, dashboards, and decision support. I bring strong Python/SQL foundations, stakeholder-facing delivery, and practical experience with modern GenAI tools for analytics prototyping.

At Reppublika, I lead development of a proprietary panel-data analytics service focused on brand identity, audience reach, and market dynamics. I build and optimize clustering-based customer and audience segmentation, and I enhance AWS-based ETL pipelines to improve data quality, reliability, and throughput for analytics teams.

Previously at Accenture, I directed multi-terabyte data migrations and designed end-to-end ingestion and ETL workflows with controls for integrity, consistency, reliability, and maintainability. I deployed and configured Snowflake and Oracle across cloud and on-premise environments and built Power BI dashboards to expose KPIs, performance trends, and business vulnerabilities.

My earlier work includes automated reporting workflows at IRi and NLP-driven market analysis at Braincandy, where I extracted and classified text to identify brand attributes and quality indicators. I also gained hands-on ML practice at Equifax through hyperparameter optimization of neural-network models, and I hold a Master of Data Analytics from the University of Strathclyde.

Experience

Work history, roles, and key accomplishments

Current

Senior Data Scientist

Current

Reppublika

May 2024 - Present (2 years 2 months)

Led development of a proprietary panel-data analytics service to assess brand identity, audience reach, and market dynamics. Developed clustering-based segmentation and improved AWS-based ETL pipelines, applying Python/SQL and lightweight GenAI tooling to accelerate analysis and workflows.

Python SQL AWS ETL ELT Data Quality Clustering Customer Segmentation Audience Segmentation OpenAI API Prompt Engineering Documentation

Senior Data Scientist

Accenture

Jul 2022 - May 2024 (1 year 10 months)

Directed multi-terabyte data migrations and built controlled end-to-end ingestion and ETL workflows to support decision-making and operational efficiency. Deployed Snowflake and Oracle platforms and delivered Power BI dashboards for KPI and performance reporting.

Data Migration ETL ELT Data Integrity Reliability Snowflake Oracle Power BI KPI Reporting Scalability Performance Improvement

Senior Data Analyst

IRi

Oct 2021 - Jul 2022 (9 months)

Automated complex reporting workflows to reduce manual workload and improve delivery speed. Delivered ad-hoc analytics on sales and market dynamics and enhanced proprietary modeling and reporting platforms to support ongoing analytics operations.

Ad Hoc Reporting market analytics Sales Analytics Data Modeling

Data Scientist

Braincandy

Feb 2020 - Oct 2021 (1 year 8 months)

Conducted market analysis and data benchmarking, applying NLP techniques to validate data integrity and derive insight from textual data. Extracted and classified text to identify brand attributes and quality indicators using NLP-driven classifiers.

NLP Data Extraction Market Analysis Benchmarking

Data Analyst Intern

Equifax Ltd.

Jun 2019 - Oct 2019 (4 months)

Tuned neural-network models using targeted hyperparameter optimization to improve predictive accuracy. Built practical ML modeling skills through focused experimentation and evaluation.

Machine Learning Neural Networks & Model Tuning