Caris Life Sciences·Phoenix, Arizona
The Pathologist Assistant I supports pathologists by reviewing reports and performing macro and microdissection of tumor areas for molecular analysis. They are also responsible for maintaining laboratory documentation, ensuring regulatory compliance, and performing quality control tests.
At Caris, we understand that cancer is an ugly word—a word no one wants to hear, but one that connects us all. That’s why we’re not just transforming cancer care—we’re changing lives.
We introduced precision medicine to the world and built an industry around the idea that every patient deserves answers as unique as their DNA. Backed by cutting-edge molecular science and AI, we ask ourselves every day: “What would I do if this patient were my mom?” That question drives everything we do.
But our mission doesn’t stop with cancer. We're pushing the frontiers of medicine and leading a revolution in healthcare—driven by innovation, compassion, and purpose.
Join us in our mission to improve the human condition across multiple diseases. If you're passionate about meaningful work and want to be part of something bigger than yourself, Caris is where your impact begins.
The Pathologist Assistant I is responsible for assisting the assigned Pathologists in organizing and performing many aspects of the pathology portion of a study. This includes performing Pathology report review, macrodissecting/microdissecting areas of tumor, and may include one (1) of the following tasks: marking of H&E (tumor and/or normal tissue) and ordering appropriate tests based on tumor site, or microscopic evaluation of CISH. Also responsible for performing quality other pathology tasks, as assigned.
Job Responsibilities
Assists the Supervisor - Pathology Operations in the day-to-day operation of the Pathology/microdissection department.
Reads Pathology Reports to determine the primary site of the specimen.
Demonstrates the ability to identify areas of tumor (and normal tissue when needed) on a stained NFR slide and collect the marked areas for molecular analysis using Micro and Macro techniques.
May possess ability to assess tumor content of tissue (and normal tissue when needed) and order the appropriate testing.
Maintains a clean workstation.
Identifies missing/wrong information and opens discrepancies as necessary.
May possess ability to assess CISH stains for gene amplification.
Responsible for asking a Pathologist for help when they have a question about a case.
Organizes slides, data, generates tables, and assists with any other requests.
Demonstrates the ability to accurately prioritize and triage specimens, handles and disposes of specimens and chemical waste based on the laboratory's procedural manual, and ensures compliance with regulatory agencies.
Maintains confidentiality of sensitive information concerning patients, physicians, employees, clients, vendors and the company.
Performs Quality Control and Quality Assurance tests as required. Maintains all necessary documentation and logs.
Reports all concerns of test quality and/or patient or employee safety to a Supervisor or Safety Officer.
Has a good understanding and working knowledge of Laboratory Information Systems.
Assists as needed to perform other related duties and special projects as required.
Maintains laboratory procedures. Ensures compliance to applicable policies and procedures by laboratory personnel. Recommends changes as needed.
Performs and documents the operation, troubleshooting and preventive maintenance of microdissection equipment.
Communicates and keeps Supervisor and/or management team abreast of laboratory problems and non-conformities.
Fosters a unified culture and promote a positive work environment by collaboration, cooperation, sharing of information and mutual teamwork.
May assist in training of peers and new hires.
Individual must successfully complete pre-employment process, which includes criminal background check, drug screening, credit check ( applicable for certain positions) and reference verification.
This job description reflects management’s assignment of essential functions. Nothing in this job description restricts management’s right to assign or reassign duties and responsibilities to this job at any time.
Caris Life Sciences is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, religion, color, national origin, gender, gender identity, sexual orientation, age, status as a protected veteran, among other things, or status as a qualified individual with disability.
Requires a Bachelor's degree in a science or medical laboratory field with a relevant certification (ASCP, AAPA) or a Medical Doctor degree. Candidates must have the ability to perform repetitive laboratory motions and pass a visual color discrimination test.
Market context
Pathologist Assistant I roles in Arizona are typically driven by hospital and pathology lab demand, especially where surgical and diagnostic workloads require steady specimen processing. These positions are competitive because employers look for a science or medical laboratory degree, relevant certification such as ASCP or AAPA, and the ability to handle repetitive lab work and pass color vision screening. Review the AI-summarized requirements and benefits on this platform to save time, then confirm your certification and lab experience match the posting before applying.