The Ocean Data and Information System (ODIS) is a federation of independent data systems coordinated by the International Oceanographic Data and Information Exchange (IODE) of IOC-UNESCO. This federation includes continental-scale data systems as well as those of small organisations. ODIS partners use web architectural approaches to share metadata describing their holdings, services, and other capacities. In brief, IODE publishes guidelines on how to share metadata as linked open data, serialised in JSON-LD using schema.org semantics. ODIS Nodes use these guidelines to publish their metadata catalogues on the web. This allows all systems with web connectivity to harvest and merge these catalogues, creating a global map of the ocean datascape. IODE harvests all metadata shared by ODIS partners, combines it as a knowledge graph, and processes this to export derivative products (e.g. diagnostic reports and cloud-optimised data products). A web interface for this system has also been developed (https://oceaninfohub.org/) Within the context of the IOC Ocean Data and Information System Project (ODIS) programme component, we seek an Individual Consultant to assist in the development of technology required for the implementation of ODIS.