text: Kujawinski joined the faculty at Barnard College in 2002, and held an adjunct position at Columbia University. She spent two years at Barnard College before being awarded a National Science Foundation CAREER Award and returning to the Woods Hole Oceanographic Institution.
  In an effort to understand how cellular metabolism impacts biogeochemical cycles, Kujawinski studies intra- and extracellular metabolic profiles. This information allows Kujawinski to identify which factors influence microbial interactions and the transformation of dissolved organic matter. Marine organic matter comprises carbon compounds that contain heteroatoms such as oxygen, nitrogen and sulphur. She makes use of high-resolution mass spectrometry and automated high through-put methods to analyze the low molecular waste organic materials in seawater. The majority of this organic matter is found deep within the ocean, where it serves as an energy source for microorganisms. Kujawinski is interested in the interplay between marine organisms releasing organic matter and organic matter serving as a food source for microorganisms. For example, Kujawinski identified that dihydrocypropanesulfonate and N-Acetyltaurine are released into the ocean by Phytoplankton and later removed by bacteria. She works alongside the Bermuda Institute of Ocean Sciences to establish which chemical compounds are produced by microorganisms. She is also interested in how these microorganisms evolve and how they interact via zooplankton and viruses.
  Kujawinski worked on the Deepwater Horizon oil spill. During the ten years after the spill, Kujawinski analyzed what had been learnt in the time following the disaster. She found that the oil spill had helped scientists learn how bacteria are degrading fossil fuels released within the ocean, how the sun catalyzes the breakdown of crude oil, the impact of dispersants and how different parts of the ecosystem recovered.
  Kujawinski was appointed Director of the National Science Foundation Center for Chemical Currencies of a Microbial Planet in 2021. The Center looks to understand the behaviour of bioreactive molecules and ocean microbes.