IT Architect, Consultant, and Developer

for Big Data, Semantic Web, Linked Data, Internet of Things, Ontology Engineering, and Data Validation

My name is Thomas Hartmann - cordially welcome to my website! I'm holding a PhD in Engineering from the Karlsruhe Intitute of Technology (KIT) and a Master’s Degree in Information Systems from the Technische Universität München (TUM). In addition, I successfully finished an apprenticeship as IT application specialist. I have gained profound experiences in project and team management in 16 smaller and 7 larger (at least 5 project members) software development projects. By assuming the technical responsibility for 4 IT projects, I have expanded my practical competencies in Web and Software Engineering on which I have led my major emphasis during my studies and apprenticeship.


I actively participate in and contribute to 4 international scientific working groups whose aim is to develop international standards using Semantic Web technologies. Closely together with smart people from all over the world, I have contributed to the development of 3 OWL ontologies, a new language to formulate constraints on RDF data, and the model-driven further development of a well-established metadata standard.

My personal research focuses on the validation of linked and distributed data. I finished my doctoral research at the Karlsruhe Institute of Technology (KIT) in July 2016. In my PhD thesis, I propose a validation framework for RDF-based constraint languages.

During the time I have been research associate and PhD student in Computer Science at a reseach institute, I presented my scientific work at 19 international scientific conferences and 23 international scientific workshops in 16 different countries. Among the most important international top conferences are the International World Wide Web Conference, the International Semantic Web Conference, and the International Conference on Semantic Systems. Among the most important workshops are the Workshop on Linked Data on the Web, 5 Dagstuhl Seminars, and the Summer School on Ontology Engineering and the Semantic Web.

I have published my scientific work in form of 38 publications (6 journal articles, 9 articles in conference proceedings, 3 articles in workshop proceedings, 2 specifications, 1 research data set, 13 technical reports, as well as my PhD Thesis, master's thesis, bachelor's thesis, and my apprenticeship thesis).

In various IT projects, I imported, exported, stored, processed, transformed, and linked large amounts of data of various data sources and formats like relational, XML, RDF, HTML, textual, and log data, or commands expressed by diverse programming languages for statistical computing (SPSS, SAS, Stata, R). For physically storing large data sets, I used multiple types of databases like relational databases, but also several NoSQL databases such as graph, XML, and document databases.

English