The Canadian Astronomy Data Centre and the Mikulski Archive for Space Telescopes invite data engineers interested in the Common Archive Observation Model to attend a workshop and hackathon. You will work on the CAOM open source project — to collaborate to help evolve the data model and support new use cases. Should you choose, you may participate in the one-day hackathon to further develop the observation model data and to stage test datasets for complete end-to-end use of CAOM.