# Datawrangler (@haroldtenhove.eurosky.social)

Profile: https://sifa.id/p/haroldtenhove.eurosky.social
Headline: Senior Data Engineer
Location: Netherlands

## About

Proficient in Python, SQL, and cloud data services (Azure, S3, SQL, Onelake, Deltalake, Postgresql) Experience designing hybrid data platforms (streaming, batch, warehouse/lakehouse) Strong data modelling skills, including semantics, lineage, cataloguing, and metadata management Familiar with orchestration patterns and full data lifecycle design Experience with BI and orchestration tools supporting analytics and platform workflows Experience of Leading architectural decisions across modelling and ingestion Experience mentoring data engineers, levelling up the technical capabilities in the team

## Experience

- **Data Engineer at Kabel Deutschland** (2009 – 2011)
  Design of datawarehouse data model (data vault) and ETL-strategy and implementation of  ETL-process on behalf of the Enterprise Data Warehouse.
- **Data Engineer at TUI Nederland** (2007 – 2009)
  Design and implementation of datawarehouse data model and ETL-process on behalf of the Marketing department. Development of a Enterprise data dictionary.
- **Principal consultant Business Intelligence at VODW** (1999 – 2003)
  Principal consultant marketing databases.
- **Senior Data Engineer at Apollo Vredestein** (2018 – 2019)
  Data warehouse design and implementation. Dataset preparation from manufacturing log files for machine learning projects.
- **Data Engineer at Deventer Ziekenhuis** (2014 – 2019)
  Developing data extracts and reports from the EPD in order to fullfill obligatory reporting for DICA, RIVM and other health-related research programs
- **Data Architect at Nederlandse Transplantatie Stichting** (2017 – 2018)
  Design and implementation of a new data infrastructure using the newest Google technology (BigQuery and datastudio).
- **Data Engineer at Dienst Uitvoering Onderwijs (Ministerie van OCW)** (2017 – 2017)
  Supporting the large data migration project with data quality analysis
- **Data migration specialist at K+V Van Alphen** (1995 – 1998)
  Data migration for public services
- **Data Engineer Basel at DLL** (2014 – 2016)
  Technical lead in design and implementation of the Microsoft Parallel Data Warehouse at DLL. Functional focus on Basel-reporting
- **Technical Lead Marketing Database at Telegraaf Media Groep** (2011 – 2012)
  Redesign of marketing database. Data to be extracted from Siebel implementation. Project aims to replace the current Siebel Analytics environment.
- **Data quality analist at DB Schenker** (2011 – 2011)
  Data quality analysis of third party datasources to be integrated in the general ledger of Schenker Rail.
- **Data Engineer at Cogas** (2007 – 2007)
  Data usability analysis, data mapping, development and implementation
- **Data Architect at Koninklijke Kentalis** (2018 – 2018)
  Data warehouse design and implementation
- **Data Engineer Medical Data at MRDM (Medical Research Data Management B.V. )** (2013 – 2014)
  connecting hospitals with national research databases (proMISe of LUMC and Dutch Institute for Clinical Audits). Extracting multiple ChipSoft, McKesson and other datasources and integrating their data in a single datawarehouse for scientific research. Creator of the "DICAknop" a solution for dutch hospitals to structure their EPD in order to avoid duplicate registration of care-details as much as possible.
- **Datawarehouse specialist at Dunea** (2012 – 2013)
  Optimizing existing ETL-process and datamodels. New design and development using BusinessObjects Data Services.
- **Senior Data Engineer at Justplugin** (2023 – present)
  As a supplier of charging cards and stations Justplugin is a rapid growing organization in the Netherlands. I established a data lake on Azure including the data pipelines and reporting environment (Apache Superset)
- **Business Intelligence Specialist at 113 Zelfmoordpreventie** (2019 – present)
  Allround BI specialist. Extraction from various sources, integration on Azure Synapse. reporting using PowerBI, and ad-hoc data engineering for research purposes.
- **Senior Data Engineer at Gebroeders Blokland** (2025 – 2025)
  Migrate old data warehouse (on-site sql-server) to Azure Onelake (Bronze, Silver, Gold). Connect 5 different API sources, assist and advise in defining analytical models
- **Senior Data Engineer at WVS** (2023 – 2024)
  Design and implementation of data lake on Azure
- **Senior Business Intelligence Consultant at MKB Brandstof** (2022 – 2023)
  design and implementation of a data Lake on AWS and Google BigQuery
- **Senior Data Engineer at Rentex** (2022 – 2023)
  data warehouse design and implementation on Azure Synapse
- **Data Engineer at Vattenfall** (2020 – 2021)
  Design and implementation of data management and delivery platform for real time analytics supporting offshore windfarms. Technology stack Kafka, Postgresql, TimescaleDB, NiFi various Azure services
- **Data Engineer at Dienst Uitvoering Onderwijs (DUO)** (2019 – 2020)
  Data Engineer supporting creation of debtor profile and data supply for profile specific workflows

## Education

- **HEAO Eindhoven**
- **Verkeers Academie Tilburg**

## Skills

- Exact Online
- Azure Data Factory
- Klinisch onderzoek
- Data Modeling
- Apache Superset
- Datawarehousing
- azure synapse
- Google Data Studio
- AWS Glue
- Informatica
- datawrangling
- Amazon S3
- AFAS
- REST-API's
- Microsoft Power BI
- Data Warehousing
- Dimensional Modeling
- Data Migration
- Data Warehouse Architecture
- Parquet
- Dashboard
- Datavault
- T-SQL
- Business Intelligence
- Siebel
- Azure Data Lake
- SQL
- azure pipelines
- Amazon Web Services (AWS)
- Google Cloud Platform (GCP)
- Onderzoek
- PostgreSQL
- Apache Kafka
- Microsoft Azure
- Apache NiFi
- ETL
- Data Integration
- Databases
- Data Management
- Data Quality
- Business Intelligence Tools
- ETL design and implementation
- Business Analysis
- Data Engineering
- Google BigQuery
- Big Data
- Data Vault
- OLAP
- Exact Online
- Python (Programming Language)
- Microsoft SQL-server

## Certifications

- Google Cloud Platform Big Data and Machine Learning Fundamentals — Coursera (https://www.coursera.org/account/accomplishments/verify/2BM83LCK8GAC)

## Languages

- German
- Dutch
- English

## Other profiles

- website: https://www.haroldtenhove.nl