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Vahid DarziVD

Vahid Darzi

Data Analyst | Python, SQL (BigQuery), R, Excel

€400/day
Barcelona, ES
0-2 years

Average response time: 1 hour

About Vahid

I help companies turn raw data into structured analysis, financial clarity, and decision-ready insights.

If you are working with messy spreadsheets, unclear financial numbers, or underused databases, I can help you organize, analyze, and translate that data into clear and actionable outputs.

I work with:

• Python (data analysis & automation)
• SQL / BigQuery (data extraction & structuring)
• Excel & Google Sheets (analysis models, reporting, dashboards)
• R (statistical analysis when needed)


What I can build for you

• Clean and structured datasets ready for reporting
• Automated Excel / Google Sheets analysis workflows
• Financial models (P&L, cash flow, forecasting, unit economics)
• Exploratory Data Analysis (EDA) with clear interpretation
• SQL queries to extract and prepare structured data
• Business reports with concise insights, not just numbers


How I work

I focus on:

✔ Logical structure
✔ Transparent formulas
✔ Reproducible workflows
✔ Clear documentation
✔ Business-oriented interpretation

My goal is not to overwhelm you with technical details — but to make your data understandable and useful.


Why clients choose me

I combine analytical thinking with a financial background and research experience.
This allows me to approach problems from both a technical and business perspective.

I am particularly comfortable supporting:

• Startups and small businesses
• Financial and operational reporting
• Early-stage analytics setups
• Decision support analysis

If you need reliable analysis, clean structure, and thoughtful interpretation — I’d be happy to collaborate.

Code samples and research work available upon request.
  • Persian

    Native or bilingual

  • Spanish

    Basic

  • English

    Conversational

Remote only
Primarily works remotely

Experience

  • Deloitte Australia
    Data Analytics Job Simulation on Forage
    February 2026 - February 2026
    Barcelona, Spain
    • Analysed industrial telemetry data and built an interactive Tableau dashboard to identify operational downtime patterns.
    • Designed calculated measures to quantify machine health and factory-level performance.
    • Applied forensic data analysis techniques to evaluate gender pay equality using rule-based classification in Excel.
    • Translated business requirements into analytical logic and validated outputs against model solutions.
    Data analysis DATA MODELING DATA STRUCTURES DATA VISUALIZATION TOOLS SPREADSHEET SKILLS
  • Freelance / Independent
    EU Inflation & Market Stability Analysis - 2025
    RESEARCH
    February 2026 - February 2026
    Barcelona, Spain
    Conducted a structured macroeconomic data analysis project focused on headline inflation (HICP – YoY) across major EU economies (Germany, France, Spain, Italy, Netherlands) for the year 2025.

    The objective was to evaluate pricing pressure levels and inflation stability across markets in order to assess potential business risk exposure and margin predictability.

    Key responsibilities included:

    • Extracting official Eurostat data (HICP – annual rate of change)
    • Cleaning and restructuring raw datasets
    • Converting wide-format macroeconomic data into structured analytical tables
    • Developing key performance indicators (KPIs)
    • Calculating average inflation levels
    • Measuring inflation volatility using standard deviation
    • Designing an analytical dashboard in Google Sheets

    Analytical focus areas:

    • Cross-country inflation comparison
    • Monthly trend evaluation (YoY basis)
    • Stability vs. volatility assessment
    • Pricing risk interpretation from a business perspective

    Key insights:

    • France demonstrated the lowest average inflation in 2025
    • The Netherlands showed the highest volatility
    • Germany presented the most stable pricing environment

    This project demonstrates the ability to transform public macroeconomic datasets into structured business insights suitable for strategic decision-making.

    Tools Used:
    Google Sheets, Pivot Tables, Data Cleaning, Statistical Analysis, Dashboard Development, Eurostat Open Data
    Data analysis Data Cleaning Data visualization Statistical Analysis Dashboard Development
  • Freelance / Independent
    Retail Sales Performance Dashboard
    RETAIL (LARGE RETAILERS)
    January 2026 - February 2026 (1 month)
    Barcelona, Spain
    Retail data analytics project analyzing $2.29M sales data.

    Built an executive dashboard in Google Sheets, identified loss-making categories and products, analyzed discount impact, and delivered actionable business recommendations.

    Deliverables:
    • Interactive Google Sheets dashboard
    • Business insights & recommendations

    Retail Sales Performance Dashboard (Google Sheets) and GitHub repository available on request.
    Data analysis Google Sheets Data Cleaning and Preprocessing Business intelligence Data visualization

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Education

  • MSc – Geophysics (Seismology)
    Payame Noor University
    2016
    Master of Science (MSc)
  • BSc – Mining Engineering
    University of Tehran
    2005
    Bachelor of Engineering (BEng)

Certifications

  • Google Data Analytics Professional Certificate
    Coursera (Google)
    2026
    https://coursera.org/share/6a4299105d0052a3c281fe88d1f1407d
    Google Sheets Data analysis R BigQuery Data visualization Business intelligence Data Cleaning Microsoft Excel SQL Python
  • Diploma IFCT153 – Data Analysis with Excel, Power Query, Power Pivot & Power BI
    Servicio Público de Empleo Estatal SEPE
    2025
    Data analysis Microsoft Power BI Power Pivot Power Query

Skill set

Categories