Lab, Clinical Research Laboratory Technologist (PHX)

Castle Biosciences•Phoenix, AZ

2d•Onsite

About The Position

Castle Biosciences Inc. is growing, and we are looking to hire a full-time Clinical Research Laboratory Technologist working from our Phoenix, AZ office location, with a start date on or before February 27, 2026. This role is a hands-on bench position focused on supporting clinical research studies. Responsibilities include preparing and processing patient samples, operating laboratory instruments, and executing assays in strict accordance with approved SOPs and study plans. You will work closely with Clinical Research Scientists to support ongoing studies, follow experimental designs, and resolve technical issues to ensure accurate and timely testing. Daily tasks also include maintaining sample tracking and workflows in LIMS, performing routine quality control and equipment maintenance, and documenting results in compliance with quality and regulatory requirements. Depending on study needs, you may perform molecular techniques such as RNA/DNA extraction or PCR-based assays and support assay development, validation, and data review in a collaborative research laboratory environment.

Requirements

Bachelor of Science Degree in Chemistry, Biology, Clinical Laboratory Science, or Medical Technology from an accredited institution, plus 1–2 years of experience in a clinical or research laboratory environment. And/or have completion of military training for laboratory technicians as high complexity testing. Completion of a 50-week U.S. military medical laboratory training program.
Minimum coursework and training requirements: 24 semester hours of medical laboratory technology courses or 24 semester hours of science courses, including 6 semester hours of both Chemistry & Biology & an additional 12 semester hours in any combination of Chemistry, Biology, or Medical Laboratory
Completion of a clinical laboratory training program OR at least 3 months of documented laboratory trainingineachspecialtyareawheretheindividualwillperformhigh-complexity
Technical proficiency, scientific creativity, successful collaboration with others, and independent
The Clinical Research Technologist in the clinical research laboratory can be placed on a track towards obtaining American Society of Clinical Pathology (ASCP) Technologist in Molecular Biology (MB) board certification if not already credentialed upon hire and expected to obtain such a certification within 2 years of employment. (Only applicable to PHX)

Nice To Haves

2-4 years clinical laboratory experience or 2-4 years of clinical research experience preferred.

Responsibilities

Preparing and processing patient samples
Operating laboratory instruments
Executing assays in strict accordance with approved SOPs and study plans
Work closely with Clinical Research Scientists to support ongoing studies
Follow experimental designs
Resolve technical issues to ensure accurate and timely testing
Maintaining sample tracking and workflows in LIMS
Performing routine quality control and equipment maintenance
Documenting results in compliance with quality and regulatory requirements
Perform molecular techniques such as RNA/DNA extraction or PCR-based assays
Support assay development, validation, and data review in a collaborative research laboratory environment