Parexel is seeking a Senior Clinical Research Associate (Sr. CRA) in Washington, DC. The Sr. CRA will oversee site management, monitoring clinical trials, and ensuring compliance with Good Clinical Practices (GCP). Candidates must have at least 3 years of site monitoring experience and preferably have a background in oncology. Strong communication skills in English and the ability to travel 60-80% are necessary. This role offers a chance to contribute to patient safety and quality study execution.