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Bleze TchallaBT

Bleze Tchalla

Business Data Analyst | POWER BI · SQL · DAX

€550/day
Toulouse, FR
8-15 years

Average response time: 1 hour

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About Bleze

I free your teams from time-consuming reporting — so they can make decisions in minutes, not days.

Business Data Analystspecializing in Power BI & SQL with 8 years of experience in data flow automation.
What I bring you:
🔹Power BI Dashboards
  • Self-sufficient dashboards, updated without manual intervention
  • KPIs by department, available from the moment you open your laptop
  • Interfaces adapted for non-technical decision-makers
🔹Data Flow Automation
  • Elimination of manual copy-pasting between sources (ERP, Excel, SQL databases)
  • Connection and consolidation of heterogeneous data
  • Robust, documented, and maintainable Power Query flows and SQL pipelines
🔹Data Modeling & Quality
  • Star modeling, management of relationships and hierarchies
  • Cleaning, normalization, and documentation of business rules
  • Advanced DAX: calculated KPIs, time-based analyses, contextual measures
🔹KPI Scoping & Functional Specifications
  • Workshops with your business departments to identify the right indicators
  • Formalization of sources of truth and calculation rules
  • Documented deliverables, transferable to your IT teams or successors
🔹User Training & Support
  • Skills transfer so your teams can take back control
  • Post-deployment support and iteration on emerging needs
Client Results:
  • ATR (aerospace): several days of follow-up between departments → KPIs updated every morning at 8 a.m., automatically
  • TotalEnergies (energy): 2.5 hours of daily copy-pasting → 10-20 minutes (i.e., ~40 hours/month returned)
  • GK Kevlar (private security): group budget harmonization → structured monthly closings
Are your teams still spending too much time preparing data instead of analyzing it?
Contact me on Malt
Let's discuss your needs and I'll tell you how I can help.

📍 Toulouse • France Mobility • Remote / Hybrid
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Toulouse (up to 50km), Bordeaux (up to 10km), Lyon (up to 10km), Paris (up to 10km), Montpellier (up to 10km)

Experience

  • SCALIAN
    Business Data Analyst Consultant
    AVIATION AND AEROSPACE
    September 2021 - April 2025 (3 years and 7 months)
    Toulouse, France
    # TotalEnergies IT (Apr 2023 – Apr 2025 | 2 years)

    Context:Energy | Major Account IT Department — budget management, reference data management, improvement of decision support tools. Agile TMA environment.

    • Analysis and scoping of business needs, definition of KPIs and business rules
    • Data structuring and modeling (Power BI / SQL)
    • Quality controls, indicator validation, functional acceptance testing
    • Participation in Agile rituals (sprint planning, review, retrospective)

    Result:Automation of the data update flow — from 2.5 hours to 10-20 minutes per day (i.e., ~40 hours/month returned). Improved reliability and standardization of budget KPIs. Better business/IT coordination.

    # ATR Missions (Sept 2021 – Mar 2023 | 18 months)

    Context:Aerospace | BI Transformation — harmonization of reporting for 12 departments with Power BI as the reference solution.

    Role:Interface between the 12 business departments and technical teams — from KPI definition to dashboard deployment.

    • Facilitation of KPI definition and alignment workshops with departments
    • Formalization of functional specifications and business rules
    • Data modeling (star model) and Power Query implementation
    • Development and deployment of Power BI dashboards (DAX, UX)
    • Functional acceptance testing and user support

    Result:Power BI dashboard automatically updated at 3 a.m. — data from all departments available at 8 a.m., accessible from anywhere. End of multi-day follow-ups and back-and-forth communication. UX design presented as a reference to other BI consultants on the mission.
    Microsoft Power BI SQL Business Analysis Agile Methodology Data Analysis
  • GROUPE GK KEVLAR
    Performance Analysis & Management Analyst
    PUBLIC SAFETY
    October 2017 - September 2021 (3 years and 11 months)
    31770 Colomiers, France
    Context:Private Security | Multi-entity group in transformation — structuring performance management and harmonizing reporting practices.

    • Definition and monitoring of strategic KPIs, variance analysis, and recommendations
    • Development of budgets, forecasts, and reports for management
    • Harmonization of multi-entity budgeting and reporting processes
    • Improving the reliability of financial data and decision support tools
    • Stakeholder coordination and team support

    Result:Harmonization of budget calendars across all group entities — monthly accounting outputs now available where they previously didn't exist. Sustainable structuring of group-wide performance management.

    Note:This role formed the basis of my dual BDA expertise — 4 years on the business side (management control, private security) before transitioning to BI implementation. Argument #1 for justifying that I understand departmental challenges, not just the technical aspects.
    KPI Business Analysis Reporting Variance Analysis Data Analysis
  • GK Sécurité
    Accounting Assistant
    PUBLIC SAFETY
    October 2015 - October 2017 (2 years)
    Colomiers, France
    Management of customer invoicing and production of accounting data in compliance with tax deadlines
    Implementation of internal invoice controls on my initiative and redesign of the invoicing archiving system: coding and digitization
    Account reconciliation and preparation of interim balance sheets
    Tax declarations: VAT, CVAE, TVS, CFE, IS, apprenticeship tax, continuing education
    Accounting Balance Sheet Internal Control

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Education

  • Higher Diploma in Accounting and Management
    Institut Limayrac Toulouse
    2015
    Diplôme Supérieur de Comptabilité et de Gestion
  • Master 2 Business Economic Diagnosis
    Université Grenoble 2
    2015
    Master 2 Diagnostic Economique d'Entreprise

Certifications

  • Business Intelligence & Data Analyst
    Corporate Finace Institute
    2024
    Azure Data Factory Microsoft Power BI Tableau software DAX Power Query SQL
  • Professional Scrum Master I
    Scrum.org
    2025
    Agile Methodology Atlassian JIRA Scrum Atlassian Confluence

Skill set

Categories