After completing his doctoral degree in 2005, Jacobs went to work with North Carolina–based AirDat LLC to work on the development of their TAMDAR (Tropospheric Airborne Meteorological Data Reporting) weather monitoring system as their director of research and business development. He stayed on with the company when the company was acquired by Panasonic Avionics Corporation in 2013.[5] At Panasonic, he served as chief atmospheric scientist from 2013 until he was asked by President Trump to join the government in 2018.[6]
In 2017, Jacobs was nominated to serve as Assistant Secretary of Commerce for Environmental Observation and Prediction and was confirmed on February 15, 2018.[7] When Timothy Gallaudet, the acting NOAA Administrator asked to be allowed to focus on his Senate-confirmed position as Assistant Secretary of Commerce for Oceans and Atmosphere in February 2018, Jacobs became the Acting NOAA Administrator and late the next year he was nominated to take on the role permanently when Barry Myers withdrew from consideration for health reason.[8] After not being confirmed in 2019, he was re-nominated in 2020.[9][10] A hearing on his nomination was held in March 2020 and his nomination was approved by the Senate Commerce Committee in May of that year.[11] On January 3, 2021, his nomination was returned to the President under Rule XXXI, Paragraph 6 of the United States Senate.[12]
In September 2019, President Donald Trump claimed that Hurricane Dorian would make landfall over Alabama. After receiving several inquiries from residents, the National Oceanic and Atmospheric Administration released a statement that Dorian would not reach Alabama. In an Oval Office briefing with reporters, Trump displayed a map including the altered projection that Dorian would make landfall in Alabama. On September 6, NOAA released a statement in support of Trump's claim, including Alabama in the list of states that Dorian was expected to reach.[13][14] In June 2020, an internal investigation found that Jacobs had violated NOAA's code of ethics by issuing a statement in support of Trump's claim, in addition to criticizing employees at the National Weather Service office in Birmingham, Alabama, for correcting Trump.[15][16][17]