Lab, Molecular Technologist

Summary

A typical day for a molecular technologist involves extraction and analyzing RNA samples using various molecular laboratory techniques. This includes RNA quantification, PCR, quality control of reagents, and instrument maintenance, all while interpreting data, and ensuring the accuracy and reliability of results. Collaborating with team members is also integral, ensuring optimal workflow and overall efficiency in the lab. The role of the molecular technologist entails proficiency in molecular techniques, maintaining optimal working conditions, and ensuring stringent quality control measures.

Job description

Requirements

• Bachelor of Science Degree in Chemistry, Biology, Clinical Laboratory Science, or Medical Technology from an accredited institution
• 1-2 years of experience in a molecular biology testing environment, clinical, or equivalent laboratory environment
• And/or completion of military training for laboratory technicians as high complexity testing personnel
• 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 Science
• Completion of a clinical laboratory training program, OR at least 3 months of documented laboratory training in each specialty area where the individual will perform high-complexity testing
• Technical proficiency, scientific creativity, successful collaboration with others, and independent thought
• The Molecular Technologists in the clinical laboratory are 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)

Benefits

• Annual salary
• 20% bonus potential
• 20 accrued PTO days annually
• 10 paid holidays
• 401k with 100% company match up to 6%
• 3 health care plan options
• Company HSA contribution
• Company stock grant

Company overview

Castle Biosciences (Nasdaq: CSTL) is a leading molecular diagnostics company that develops and commercializes innovative tests to guide patient care decisions. Founded in 2008 and headquartered in Friendswood, Texas, the company focuses primarily on dermatologic and gastroenterological diseases, with a mission to transform disease management through personalized, clinically actionable solutions. Castle's proprietary portfolio includes five commercial tests targeting unmet clinical needs in dermatologic cancers, Barrett's esophagus, and uveal melanoma. Their flagship product, DecisionDx®-Melanoma, is a gene expression profile test that predicts metastasis risk in cutaneous melanoma patients. The company also markets TissueCypher® for Barrett's esophagus, DecisionDx®-SCC for squamous cell carcinoma, MyPath® Melanoma for lesion characterization, and DecisionDx®-UM for uveal melanoma staging. With laboratory operations in Phoenix, Arizona and Pittsburgh, Pennsylvania, Castle Biosciences employs advanced molecular technologies to provide physicians with objective data for more confident treatment planning. The company reported $83 million in Q3 2025 revenue and has demonstrated strong growth in its core testing franchises, positioning itself as a significant player in the precision diagnostics market.