Senior BI Analyst & Data Visualizer

Resume posted by asperanz in IT.
Desired salary: $65,000.00
Desired position type: Freelance
Location: Athina, Athens Attica, Greece

Contact asperanz


Senior BI Analyst and Data Visualizer (Freelancer) with over 12+ years of experience delivering BI projects. Data Exploration, Data Visualization with R and Tableau


University of Pavia (Italy)

Degree in Civil Engineering (108/110) (1998) – Bachelor’s degree 05/09/1993 – 20/10/1998


DataKraft Solutions Ltd.      01/07/2015 – present

Senior BI Analyst & Data Visualizer (Remote Freelancer)

My current role covers the following specific tasks and duties:

• Business requirements analysis
• Data Analysis
• Data Visualization and BI Dashboard/Reports implementation
• T-SQL Programming and Testing
• PL/SQL Programming, Best Practices and Troubleshooting
• Customer Support on DataKraft and BI products
• High quality project deliverables to the customer’s management

Skills used:
Oracle RDBMS 11g, SQL Server 2012-2014, PL/SQL, T-SQL, SQL Server Management Studio (SSMS), Toad, BI Publisher, R statistical programming, Rstudio Shiny, SVN

Mednet International Ltd.      16/03/2012 – 15/06/2015

Senior BI&DWH Engineer


• DWH Logical Model definition and Physical Model design
• DWH ETL process/workflow architecture and database objects design
• PL/SQL Programming, Best Practices, Tuning and Optimization
• BI Reporting implementation and ad-hoc analyses
• Coaching and supervising team members

Skills used:
Oracle RDBMS 11g, PL/SQL, Toad, OWB, ODI, OBIEE, BI Publisher, Discoverer, XML, UNIX, IBM Cognos PowerPlay, TortoiseSVN, Red Gate for Oracle Dev.

Oracle Hellas      02/01/2007 – 02/03/2012

BI&DW Solutions Implementation Consultant


• Project requirements analysis respecting the scheduled working time
• Designing and planning the ETL process
• Review of data loaded into the Data Warehouse for accuracy
• Creating and publishing reports using Oracle BI Publisher and Discoverer
Skills used:
Oracle RDBMS 11g, PL/SQL, Toad, OWB, BI Publisher, Discoverer, XML, UNIX, SVN

ING Direct Bank N.V.      19/04/2004 – 15/12/2006

Data Warehouse Analyst/Developer


• ETL processes maintenance and database objects control
• Modelling & Reengineering business processes/rules using Oracle Workflow
• PL/SQL troubleshooting and debugging
Skills used:
Oracle RDBMS 10-11g, PL/SQL, Toad, OWB, Discoverer, Reports, Workflow, UNIX

Oracle Italia S.r.l.      03/06/1999 – 02/04/2004

Data Warehouse Analyst/Developer


• Customer Enterprise DWH Development and Management Board Reporting

Skills used:
Oracle RDBMS 10g, PL/SQL, Toad, Enterprise Manager, Designer, Workflow, OWB


  • Business Intelligence
  • Requirements Analysis
  • Data Exploration
  • Data Analysis
  • Data Visualization
  • Data Analytics
  • R programming for Exploration Data Analysis (EDA)
  • Descriptive Statistics
  • RStudio
  • ggplot2 R package
  • R-Shiny
  • Tableau 10.2
  • R Markdown
  • Survey Analysis
  • Oracle BI Publisher Reports
  • Microsoft SQL Server 2012
  • Microsoft SQL Server Management Studio
  • PostgreSQL
  • SQL
  • T-SQL
  • PL/SQL
  • Oracle Database 11g
  • Data Warehouse Design
  • ETL
  • Oracle Warehouse Builder
  • Oracle Data Integrator 12c (ODI)
  • Toad For Oracle


    Data Exploration, Data visualization

Spoken Languages

    English (Fluent), Greek, Italian (mothertongue)