Additionally, she served as managing director at SKDK, a strategic communications firm in Washington, D.C.,[6] and an advisor to the Biden presidential transition.

Senator John Glenn (D-OH) in 1984,[10] and on Capitol Hill before joining the firm founded by Bob Squier and William Knapp in 1993.

She was the adviser and communications director to Senator Bill Bradley (D-NJ),[12] and served as the chief strategist for his presidential campaign.

"[26] Although working for a lobbying firm, White House records show that Dunn maintained strong connections with the administration, having visited over 100 times between her departure in 2009 and 2012.

[28] In particular, SKDKnickerbocker corporate clients have included such controversial companies as the for-profit Kaplan University and TransCanada Corp., the developer of the Keystone XL pipeline.

[29] Other SKD Knickerbocker clients include New York City landlords and real estate associations resisting stronger rent protections for tenants,[30] big food companies such as General Mills, Pepsi Co, Nestle, Kellogg, Viacom, and McDonalds in their work to resist Obama-era nutritional standards for marketing foods to children,[31][32] and Google and Pfizer in their campaign to cut taxes on foreign profits.

[37] The New York Times later reported that Dunn told Weinstein in an email "you should accept your fate graciously, and not seek to deny or discredit those who your behavior has affected.

"[38] However, according to reporting from CNN, that email was actually written by a British man named James Linton in an attempt to elicit incriminating statements from Weinstein.

[8] After Biden's disappointing fourth-place finish in the 2020 Iowa Democratic caucuses, Dunn was elevated to a more senior position managing overall campaign strategy, personnel, and finances.

[44] In July 2024, it was reported that Dunn would be leaving her White House post to move over to the "Future Forward" super PAC supporting Vice President Kamala Harris’s campaign.