Responsibilities: 1. Plan and execute experiments focusing on ELISA and qPCR, such as residual enzyme, residual HCP, residual protein A and residual DNA; 2. Analyze experimental data independently with high quality, efficiency and productivity with compliance; 3. Communicate with supervisor and collaborate with coworkers in developing biochemical methods, data analysis, and troubleshooting; 4. Communicate with external and internal client on method design, data interpretation and troubleshooting; 5. Play active roles in documents writing and review (e.g. SOPs, transfer reports, and assay development/assessment reports); 6. Highly motivated to establishment or optimization of new technology platform(s); 7. Act as tech leader to represent the department in CMC projects team and cross function team.   Basic Qualifications: 1.  Ph.D. or Experienced Master in pharmaceutical, biology, immunology or a related field; 2.  Basic knowledge and hands-on experiences with ELISA, immunoassay, enzyme activity and qPCR; 3.  Strong capabilities in experimental design and execution; 4.  Ability to work on multiple projects simultaneously, as well ability to work independently and collaborate cross-functionally; 5.  Excellent spoken and written communication skills in English.