• Open to remote, hybrid & relocation
  • Athens, Greece
  • Portfolio — Edition 02

George Gardelinos

Senior Business Analyst

Data & Analytics Transformation

From raw sources to boardroom decisions — I design the pipelines, models and dashboards in between.

Email me LinkedIn (opens in a new tab) CV (opens in a new tab)
Data flow diagram Raw sources such as FTP, ERP and spreadsheets are ingested, transformed with SQL and Python, organised into a data model and surfaced as KPI dashboards for decision-making. 01 INGEST 02 TRANSFORM 03 MODEL 04 DECIDE FTP ERP XLSX ETL SQL · PYTHON Model +40% EFFICIENCY
Fig. 01The work in one diagram: raw sources in, decisions out.
Read the report SQL · Python · Power BI · Tableau · Azure · Databricks
§ 01

Profile

Strategic impact

Translating business needs into scalable data platforms — and data into decisions.

Data-driven Business Analyst with experience designing analytics solutions, translating business needs into scalable data platforms, and enabling decision-making through BI and automation. Skilled in SQL, Python, and BI tools to build data pipelines, automate reporting, and support operational strategy.

In business analysis since
2019
Reporting efficiency gained through automated SQL pipelines
40%
Working languages — Greek, English, French
3
§ 02

Expertise

Core toolkit
  1. 01

    Data & Analytics

    • SQL
    • Python
    • Data Modeling
    • Data Pipelines
    • ETL

    Ingest · Transform

  2. 02

    Business Intelligence

    • Tableau
    • Power BI
    • Dashboard Development

    100% Efficiency gain

    Report · Decide

  3. 03

    Tools & Platforms

    • Azure
    • Databricks
    • Git

    Model · Platform

  4. 04

    Methodologies

    • Agile / Scrum
    • Data-Driven Decision Making

    Practice · Deliver

§ 03

Experience

Professional journey
Fig. 02Tenure at LLL, Athens — November 2019 to today.

  1. – Present

    LLL · Athens, Greece

    Current role

    Senior Data Engineer / Business Analyst

    • Designed and implemented SQL-based data pipelines enabling automated reporting, improving efficiency by 40%.
    • Partnered with stakeholders to translate requirements into scalable data models and analytics dashboards.
    • Built Power BI, Tableau and Excel dashboards tracking training and operational KPIs.
    • Automated workflows through Python and SQL scripting.

  2. –

    LLL · Athens, Greece

    Business Analyst

    • Gathered functional requirements for reporting systems and internal analytics tools.
    • Performed data analysis using SQL and Excel to identify trends.
    • Produced functional documentation including user stories and acceptance criteria.
§ 04

Projects

Selected case files

Case 01Data engineering

Automated Data Integration

Metadata-driven ingestion framework integrating FTP data into SQL datasets.

  • SQL
  • Automation

Case 02Business intelligence

BI Reporting Platform

Centralized KPI reporting for leadership teams supporting performance monitoring.

  • Tableau
  • Analytics

Case 03Predictive analytics

Inventory Optimization

Predictive model for stock level optimization and demand forecasting.

  • Python
  • scikit-learn
The archive See more work Explore all my professional and personal works and projects. (opens in a new tab)
§ 05 Remote · Hybrid · Relocation

Let’s put your data to work.

george@gardelinos.com
Connect on LinkedIn (opens in a new tab) View CV (opens in a new tab)