Summary
Overview
Work History
Education
Certification
Software
Timeline
Generic

ATHANASIOS KASELOURIS

BI Domain Architect | Business Intelligence Analyst | Data Engineer
Paiania

Summary

Senior engineering professional with deep expertise in data architecture, pipeline development, and big data technologies. Proven track record in optimizing data workflows, enhancing system efficiency, and driving business intelligence initiatives. Strong collaborator, adaptable to evolving project demands, with focus on delivering impactful results through teamwork and innovation. Skilled in SQL, Python, Power BI, and cloud platforms, with strategic approach to data management and problem-solving.

Overview

5
5
years of professional experience
4
4
years of post-secondary education
10
10
Certificates

Work History

BI Domain Architect

Vodafone
01.2024 - Current
  • Managed end-to-end software development life-cycle, from initial requirements gathering to post-implementation support and maintenance.
  • Conducted research to evaluate systems design and process efficiency.
  • Worked with customers or prospective customers to develop integrated solutions and lead detailed architectural dialogues to facilitate delivery of comprehensive solution.
  • Managed project planning, resource allocation, scope, schedule, status and documentation.
  • Spearheaded the migration of legacy systems to modernized architecture, reducing operational expenses while increasing overall functionality.
  • Designed comprehensive documentation for all aspects of domain architecture projects, facilitating transparency and easy knowledge transfer among team members.

Business Intelligence Analyst

Freelacer
02.2023 - 01.2024
  • Enhanced data-driven decision-making by developing and implementing BI solutions for various business departments.
  • Delivered customized training sessions to end-users on BI tool usage, enhancing adoption rates across the organization.
  • Standardized best practices in report generation across departments to ensure consistency in presentation formats as well as analysis methodologies employed.
  • Participated actively in stakeholder meetings, presenting data-driven insights and recommendations to support business growth initiatives.

Data Engineer

Freelance
12.2022 - 01.2024
  • Analyzed complex data and identified anomalies, trends, and risks to provide useful insights to improve internal controls.
  • Optimized data processing by implementing efficient ETL pipelines and streamlining database design.
  • Designed and implemented effective database solutions and models to store and retrieve data.
  • Automated routine tasks using Python scripts, increasing team productivity and reducing manual errors.
  • Generated detailed studies on potential third-party data handling solutions, verifying compliance with internal needs and stakeholder requirements.
  • Lead data engineering tasks such as ETLs, data adaptation, data extraction

BI Data Engineer

Seven Red Lines
05.2021 - 10.2023
  • Designed and developed customized extract, transform and load (ETL) applications per client specifications.
  • Developed custom database objects, stored procedures and delivered application support.
  • Wrote and optimized SQL statements to assist business intelligence practices.
  • Responded to specific BI requests, creating data packets with requested information in easily understandable formats.
  • Developed intelligence-sharing dashboards, providing company-wide access to collected data.
  • Designed customized data collection models for specific visualization tasks.

Business Intelligence Analyst

isMOOD
10.2019 - 09.2020
  • Integrated BI assets into customer relationship management tasks, improving service personnel's available intelligence.
  • Drafted strategic business intelligence roadmap, complete with data governance policies and tactical information safeguards.
  • Directed implementation of new business intelligence tools, selecting appropriate solutions and aiding in corresponding onboarding processes.
  • Collected data from wide-ranging sources.
  • Designed customized data collection models for specific visualization tasks.
  • Analyzed existing SQL queries to identify opportunities for improvements.

Education

Master of Science - Department of Management And Technology

Athens University of Economics And Business
Athens
10.2015 - 02.2020

Certification

BI Elite Training Certified: DA-100 Power BI

Software

Python, Java, DAX, Power M

Power BI, Tableau, QlikView

SQL, MySQL, PostgreSQL

Power Platform, Power Apps

Visual Studio, Talend

MS Office

Azure

Timeline

Scaled Agile Framework (SAFe) and Architecture

07-2024

BI Domain Architect

Vodafone
01.2024 - Current

Business Intelligence Analyst

Freelacer
02.2023 - 01.2024

Data Engineer

Freelance
12.2022 - 01.2024

Microsoft Certified: DP-900 Azure Data Fundamentals

10-2022

Microsoft Certified: PL-900 Microsoft Power Platform Fundamentals

10-2022

Microsoft Certified: Data Analyst Associate - Analyzing Data with Microsoft Power BI

09-2022

SQL - MySQL for Data Analytics and Business Intelligence

02-2022

ΤHe ReGeneration Initiative: Upskilling Greek Youth for the Digital Era

01-2022

Microsoft Certified: AZ-900 Azure Fundamentals

12-2021

ReGeneration Academy on Data Science, powered by Papastratos | 100 hours hands-on training

10-2021

BI Data Engineer

Seven Red Lines
05.2021 - 10.2023

Microsoft Certified: Data Analyst Associate - Analyzing Data with Microsoft Power BI

09-2020

BI Elite Training Certified: DA-100 Power BI

08-2020

Business Intelligence Analyst

isMOOD
10.2019 - 09.2020

Master of Science - Department of Management And Technology

Athens University of Economics And Business
10.2015 - 02.2020

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ATHANASIOS KASELOURISBI Domain Architect | Business Intelligence Analyst | Data Engineer