Dr. Walker is an Assistant Professor at the University of Maryland School of Medicine in the Department of Medical and Research Technology and the Graduate Program Committee Chair . She graduated with a Bachelor's degree from the same department and is ASCP certified. In addition, she received her Ph.D. in Microbiology and Immunology from the Medical College of Virginia campus of Virginia Commonwealth University.

She is the course coordinator of undergraduate courses MEDT 454, Applied Cellular and Molecular Biology; MEDT 422, Computer Applications; and MEDT 490, Pathogenic Microbiology and graduate courses MEDT 671, Molecular and Cellular Biology; MEDT 687, Quality Control and Regulations; MEDT 639, Management Practices in Laboratory Sciences; and MEDT 628, Graduate Seminar.

Dr. Walker's research interests are centered on the molecular regulation of Gram-negative bacterial pathogenesis, including both enteric and respiratory pathogens. Her current research project focuses on novel, non-antibiotic methods to control Gram-negative pathogens using proteins from the dimorphic aquatic predator, Bacteriovorax and pathogenic Enterobacter species. Dr. Walker is an active member of the American Society for Microbiology (ASM), having served as a 2000-2001 AAAS/ASM Congressional Fellow in the office of the late Paul D. Wellstone, U.S. Senator for Minnesota.