# Datawrangler (@haroldtenhove.nl)

Profile: https://sifa.id/p/haroldtenhove.nl
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

## Career

- **Business Intelligence Specialist at 113 Zelfmoordpreventie** (Aug 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 Justplugin** (Aug 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)
- **Senior Data Engineer at Gebroeders Blokland** (Mar 2025 - Nov 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** (Jun 2023 - Dec 2024)
  Roosendaal, North Brabant
  Design and implementation of data lake on Azure
- **Senior Business Intelligence Consultant at MKB Brandstof** (Nov 2022 - Sep 2023)
  design and implementation of a data Lake on AWS and Google BigQuery
- **Senior Data Engineer at Rentex** (Feb 2022 - Jan 2023)
  data warehouse design and implementation on Azure Synapse
- **Data Engineer at Vattenfall** (Aug 2020 - Nov 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)** (Jun 2019 - Aug 2020)
  Groningen
  Data Engineer supporting creation of debtor profile and data supply for profile specific workflows
- **Senior Data Engineer at Apollo Vredestein** (Nov 2018 - Jun 2019)
  Enschede Area
  Data warehouse design and implementation. Dataset preparation from manufacturing log files for machine learning projects.
- **Data Engineer at Deventer Ziekenhuis** (Jun 2014 - Jun 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 Koninklijke Kentalis** (Jun 2018 - Nov 2018)
  Data warehouse design and implementation
- **Data Architect at Nederlandse Transplantatie Stichting** (Oct 2017 - Jun 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)** (Mar 2017 - Oct 2017)
  Groningen
  Supporting the large data migration project with data quality analysis
- **Data Engineer Basel at DLL** (Aug 2014 - Nov 2016)
  Eindhoven Area
  Technical lead in design and implementation of the Microsoft Parallel Data Warehouse at DLL. Functional focus on Basel-reporting
- **Data Engineer Medical Data at MRDM (Medical Research Data Management B.V. )** (Mar 2013 - Aug 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** (Apr 2012 - Mar 2013)
  Optimizing existing ETL-process and datamodels. New design and development using BusinessObjects Data Services.
- **Technical Lead Marketing Database at Telegraaf Media Groep** (Apr 2011 - Jul 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** (Feb 2011 - May 2011)
  Data quality analysis of third party datasources to be integrated in the general ledger of Schenker Rail.
- **Data Engineer at Kabel Deutschland** (Feb 2009 - Feb 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** (Dec 2007 - Jan 2009)
  Design and implementation of datawarehouse data model and ETL-process on behalf of the Marketing department. Development of a Enterprise data dictionary.
- **Data Engineer at Cogas** (Sep 2007 - Dec 2007)
  Data usability analysis, data mapping, development and implementation
- **Principal consultant Business Intelligence at VODW** (1999 - 2003)
  Principal consultant marketing databases.
- **Data migration specialist at K+V Van Alphen** (1995 - 1998)
  Data migration for public services

## Skills

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

## Credentials

- Google Cloud Platform Big Data and Machine Learning Fundamentals — Coursera (Apr 2019) https://www.coursera.org/account/accomplishments/verify/2BM83LCK8GAC

## Education

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

## Languages

- Dutch
- English
- German

## Links

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