Oakleaf Technology Group, Inc.

Data Scientist/Systems Engineer

Columbia, MD

Job Description

Performs logical and physical data modeling using UML tools (PowerDesigner, Rational Rose).  Develops Enterprise and Domain data architectures.  Physical data modeling includes semantic integration and mapping of multiple data sources to arrive at a common data centric architecture.  Generates common data formats (XSD, RDFS, Protocol Buffers) and XSLT transformations.

Specific Duties

  • Perform semantic data modeling for enterprise and domain logical data models, and physical data model formats.  Skills include Semantics, Ontology, RDFS, OWL based technologies, Hadoop, SPRQL, XML, XSD, and relational theory.
  • Develop and maintain domain logical data model artifacts: Logical Data Models (LDM), Data Element Dictionaries (DED), Physical Data Models (PDM), data format specifications, user guides, and format mappings.
  • Coordinate and hold Technical Peer Reviews with Stakeholder communities to determine requirements to understand the data elements in their domains and relationships among data elements.
  • Define and analyze data requirements, map legacy data stores and formats to data models and perform architectural alignment.
  • Provide expertise in data harmonization and provide data modeling consulting to develop data models and formats for exchange and storage in an agile fashion.
  • Stay current with internal and external standards that specifically focus on data modeling and data formats.

Required and Desired Skills

  • Applicants selected will be subject to a government security investigation and must meet eligibility requirements for access to classified information.
  • Bachelor’s degree from an accredited college in a related discipline, or equivalent experience/combined education, with 5-10 years of professional experience as a Software/Systems Engineer and 3-5 years as a Data Modeler on systems that encompass systems architecture, requirements analysis, process development and evaluation, and standards support; or 3-5 years of professional experience with a related Masters degree.
  • Extensive working knowledge and practical use of data modeling techniques using Resource Description Framework (RDF) Schema (RDFS) and OWL based technologies.  In addition, working experience with Unified Modeling Language (UML) and XML technologies (XSDs and schemas, and XML generation), ontologies, and semantics.  Experience using Sybase PowerDesigner is a plus.  
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