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Malte DoseMD

Malte Dose

BI Consultant | Analytics Engineer

€650/day
2 projects
Hamburg, DE
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Malte

Hey, I'm Malte – BI Consultant & Analytics Engineer focusing on end-to-end data solutions 📊

I help companies prepare their data to create clear, reliable foundations for decision-making – automated, performant, and without manual Excel workarounds.

Instead of just building reports, I develop comprehensive analytics solutions: from connecting ERP and other data sources, through clean data models, to meaningful dashboards in Microsoft Power BI.

My focus is on stable, maintainable, and performant data models that function reliably even with complex finance use cases.

What you get:
✔ Automated reporting solutions – less manual work, more time for analysis
✔ Clear and reliable KPIs – well-founded decisions instead of gut feeling
✔ Clean data models – scalable, understandable, and usable in the long term
✔ Performant reports – fast loading times even with large amounts of data
✔ Structured implementation – from the data source to the finished dashboard

I particularly enjoy working in the finance sector, but I also support data-driven projects in other areas.

➡️ If you finally want to use your data in a structured way and make well-founded decisions, let's talk
  • German

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • OptiMobil
    API Integration of Invoice Data (EURONET → sevDesk)
    RETAIL (SMALL BUSINESS)
    January 2026 - January 2026
    Hamburg, Germany
    As part of this project, an optics software was connected to sevDesk via a REST API to automate the transfer of invoices.

    Before creating an invoice, it is checked whether the customer already exists (customer number comparison) and whether the respective invoice is already present in sevDesk to avoid duplicates.

    After processing, a log is exported that contains the processing status and relevant details about successful or failed transfers.
    Python Data Cleaning and Preprocessing ETL Processes
  • Terra Canis GmbH
    Malt logoOn Malt
    Validation of a Dashboard (Google Sheet) for Calculating and Displaying Customer Lifetime Value
    E-COMMERCE
    November 2025 - November 2025
    Project:Validation & Optimization of Customer KPIs Dashboard (Google Sheets)

    Value:Validation & Correction of CLV and Retention Rate calculations. Critical bug fixing in determining First Order and customer count, which significantly impacts cohort analysis.

    Goals:Reliable KPIs for strategic decisions. Highlighting the limitations of Google Sheets with large data volumes.

    Tasks:Comprehensive analysis of the Google Sheets dashboard. Identification of errors in First Order determination due to limited data volume. Development of more precise formulas (COUNTUNIQUEIFS, MINIFS) and recommendation for migration to Power Query/BI to consider ALL customer transactions and form correct cohorts.
    Data Analysis KPI Development Google Sheets Data Validation Business Intelligence (BI) Strategy
  • OTTO GmbH & Co. KG
    Data Analyst
    March 2022 - Today (4 years and 3 months)
    Hamburg, Germany
    I am currently responsible for creating and implementing interactive dashboards and reports that enable our stakeholders to make data-driven decisions. I work closely with various departments to understand their requirements and develop customized solutions.

    - Transforming data from different sources to create meaningful reports.
    - Developing and operating semantic models
    - Applying best practices in data visualization to present complex information understandably.
    - Designing user-friendly and appealing dashboards that visually represent key metrics.
    Microsoft Power BI Snowflake Exasol DAX SQL

Reviews

5.0

Out of 1 rating

R

Robert

Senior Performance Marketing Manager - Terra Canis GmbH

Reviewed on 12/16/2025

The collaboration with Malte was excellent! He not only met all requirements but exceeded them. His professional approach, even before the actual project start, immediately showed that he knows exactly what he's talking about. Furthermore, the communication was always friendly, reliable, and pleasant. He was extremely dedicated to accommodating requests and proactively suggested solutions that made the outcome even better. In short: A true professional with great commitment and very pleasant communication. Unreservedly recommended!

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Education

  • Certified Business Economist Bachelor
    Handelsfachwirt Bachelor

Skill set

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