Lex Jansen is an independent consultant, currently working as Senior Director, Data Science Development at CDISC.

Before, Lex was a Principal Solution Consultant at SAS Institute, Health and Life sciences. In this role, he helped customers implement SAS software for clinical research, such as SAS Life Science Analytics Framework (LSAF). Prior to this role he was one of the developers of the SAS Clinical Standards Toolkit. Lex was also one of the Java developers of the SAS Life Science Analytics Framework.

Prior to working at SAS he was a Senior Consultant, Clinical Data Strategies at Octagon Research Solutions, Inc. In this position, Lex worked on client consulting projects dealing with the assessment, design and/or implementation of CDISC standards. Before his employment with Octagon, he held various positions in the 16 years that he worked at the pharmaceutical company Organon.

Lex holds a MSc in Mathematics from the Eindhoven University of Technology in the Netherlands.

Since 2008 Lex has been an active member of the CDISC Data Exchange Standards Team, where he has been active in the development of various CDISC standards: ODM 2.0, Define-XML 2.0/2.1, Dataset-XML and the Analysis Results Metadata extension for Define-XML 2.0.
Lex owns the website (www.lexjansen.com) which is well-known in the SAS community and contains more than 37,000 links to papers that were presented at major SAS User Group conferences.