At Personalis, we are transforming the active management of cancer through breakthrough personalized testing. We aim to drive a new paradigm for cancer management, guiding care from biopsy through the life of the patient. Our highly sensitive assays combine tumor-and-normal profiling with proprietary algorithms to deliver advanced insights even as cancer evolves over time. Our products are designed to detect minimal residual disease (MRD) and recurrence at the earliest timepoints, enable selection of targeted therapies based on ultra-comprehensive genomic profiling, and enhance biomarker strategy for drug development. Personalis is based in Fremont, California. We are seeking a talented and experienced Senior Scientist to join a team of engineers and scientists to enable efficient and scalable lab processes, execute product and process improvements, validation, and implementation, and provide lab operation support. While the primary objective of this role is supporting Operations, this position will also work closely with early R D, product development, LIMS and software teams throughout the product development lifecycle. The ideal candidate is a detail-oriented, dynamic team player with hands-on experience in implementing and troubleshooting both manual and automated Next Generation Sequencing assays and workflows.