Main Responsibilities:1.Serve as a scientific expert in chemistry and provide recommendations regarding innovative payload/linker synthesis routes design and responsible for new payload/linker synthesis;2.Perform literature reviews, design, propose, and execute medicinal chemistry plans, help senior leader to coordinate chemistry and biology data to support compound synthesis progression and patent strategies; 3.Lead a group to execute research projects well by providing on-time and high-quality delivery;4.Responsible for the chemistry lab routine operation;5.Train and help key members of the team to solve chemistry problems;6.Ensure communication and provide updates on project status to senior leader and clients;7.Working closely with partners in CMC, PM and conjugation team to promote projects progress.Requirements:1.Master/PhD Degree in synthetic organic chemistry or medicinal chemistry with more than 2-3 years of pharmaceutical industry experience.2.Ability to operate within aggressive timelines.3.Flexible and innovative problem solver.4.Fluent in oral and written English.5.Experience in ADC payload/linker chemistry is a plus.