Mullarkey began her career in Washington, D.C., with the Office of the Solicitor, U.S. Department of the Interior. Here, she represented federal agencies in water, environmental, and civil rights cases. Later, Mullarkey developed expertise in race and gender discrimination cases under Title VII of the 1964 Civil Rights Act. That led to a position at the Equal Employment Opportunity Commission Office in
Denver, CO in 1973. Mullarkey then went to work for the office of the Colorado Attorney General, where she first worked on appeals under attorney general J.D. MacFarlane, then transitioned to the position of solicitor general. In that role, Mullarkey was lead counsel for the state in major appellate cases from 1975 to 1982. From 1982 to 1985 Mullarkey served as the chief advisor to Governor Dick Lamm. During her 23-year tenure on the Colorado Supreme Court, Mullarkey heard more than 30,000 cases and authored 472 opinions. She helped to increase Colorado's number of judges by 27 percent, remodel courthouses, institute judicial training and juror appreciation programs, and turn Colorado's judicial system into a national technological model. ==References==