WuXi XDC is a leading Contract Research, Development and Manufacturing Organization (CRDMO) focused on the global ADC and broader bioconjugate market, is a pioneering CRDMO offering integrated, end-to-end services. Services are provided from proximately located, state-of-the-art laboratories and manufacturing facilities, allowing for a significant reduction in development timelines and costs. Responsibilities: 1.Develop ELISA and cell based assay for high-throughput screening, lot release & stability sample testing; 2.Lead and mentor junior scientists to advance cross-functional project goals and foster team collaboration.  3.Design and implement cell-based functional assays to assess therapeutic mechanism of action (MOA), potency, and critical quality attributes (CQAs) for in-process and final product release testing.  4.Ensure regulatory compliance by following instrument calibration, personnel training, and end-to-end documentation (drafting, review, archival).  5.Support biologics regulatory submissions (e.g., INDs, BLAs) at WuXi XDC, including direct engagement with global agencies (US FDA, China NMPA) as required.  Basic Qualifications: PhD in Biochemistry/Biotechnology, Cell Biology, Immunology, or related field. 0-5 years for PhD of industrial experience in cell based assay Strong technical innovation and trouble-shooting skills in cell biology, molecular biology and biochemical research. In-depth knowledge of molecular biological techniques, cell signaling transduction, and / or immune regulation knowledge. Excellent spoken and written communication skills in English is a must. Experience with use of electronic lab notebook and regulatory filings is preferred.