Jack currently leads the Soil Informatics group and the LandIS team at Cranfield University, who are responsible for the national soil data for England and Wales . She is President of the British Society of Soil Science (BSSS).

Jack's research on land use decisions is focused on soil data, soil health and soil policy. Her work in soil data and modelling fuses novel machine learning approaches with expert and local knowledge to develop new predictions of soil properties at national scales. She is interested in how different forms of soil data (e.g. spectroscopy or citizen-sourced data) can be used to inform local sustainable soil management and also feed into national monitoring schemes. Work on predictive mapping of land capability identified how climate change could affect the national capability of land for agriculture. The outputs have been used for decision making by the Welsh Government and Defra in national and local policies. Her work on soil health has developed proof-of-concept soil health indicators for government and land owners. She works closely with farmers and growers to implement regenerative agriculture for better soil health outcomes. Her policy-relevant research sees her working collaboratively with policymakers, bringing evidence directly into land use and soil policy design and implementation. She completed an 24 month secondment (2021-2023) in Welsh Government Soil Policy Team developing a new soil policy for Wales. She is a panel member for NERC.

She is a passionate science communicator and has been interviewed on BBC Countryfile, BBC Radio 4 Today programme, Sky News and BBC World. She founded Soapbox Science in Milton Keynes in 2015, a public outreach platform promoting women in science. She is a member of Cranfield University's Community and Public Engagement working group and the School of Water Energy and Environment, Equality, Diversity and Inclusion group.