Freelancer profile translated to English.
Back to original languageAbout Errol
From Data to Decisions
I help companies transform their data into clear insights and practical reporting solutions.
Using SQL, Power BI, and modern AI tools, I analyze data, identify patterns, and develop dashboards that support real business decisions.
With over 20 years of international experience in operations, purchasing, and customer management in Europe, Asia, and the USA, I understand not only what data looks like – but how companies really work.
At DND Labs UG, I work on projects in:
ETL & Data Preparation (Python, SQL)
Predictive Analytics & Machine Learning (Python)
AI Chatbots with Custom Knowledge Bases (RAG)
Data Analysis & Reporting (SQL, Power BI)
Dashboard Visualization (Power BI)
Primarily remote – but also on-site within Bavaria – available in German, English, and Spanish
German
Native or bilingual
English
Fluent
Spanish
Fluent
Remote only
Primarily works remotely
Experience
- Gestora Catalana de Residuos (GCR Group)Purchase ManagerRAW MATERIALS INDUSTRYJanuary 2005 - July 2012 (7 years and 6 months)Barcelona, SpainFounding and managing the international purchasing departmentfor Central and Eastern Europe (DACH region)Responsible for the procurement of recycled raw materials,logistical coordination, and supplier managementStrategic expansion of sales into new markets as well asmarket analysis and KPI monitoring to steer business developmentNegotiation with international partners in German, English,and Spanish.
- DND LabsData & AI Consultant | Predictive Analytics | ML | Python | SQL | Power BIDIGITAL AND ITMay 2025 - Today (1 year and 3 months)München, GermanyData-driven solutions for business clients at DND Labs UG:
- Python-based data workflows & automation
- Business Process Analysis & Optimization
- Predictive Analytics & Machine Learning (Python)
- AI-powered reporting & decision support
- SQL & database development
- ETL & data preparation
- Power BI Dashboards & Reporting
Remote work with clients – available in German, English, and Spanish
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Education
- PEA Artificial Intelligence & Data ScienceIMPELIA Campus Barcelona2025PEA Inteligencia Artificial & Ciencia de Datos
Certifications
- Data AnalystImpelia Campus Barcelona2025