Lab, Clinical Research Laboratory Technologist

castlebiosciences; Phoenix (AZ); On-site; USD 65,000 - 95,000; Full time

Benefits offered by this job

Salary bonus

PTO & Holidays

401K match

Health plan + HSA

Stock grant

Job summary

Castle Biosciences Inc. in Phoenix, AZ is seeking a full-time Clinical Research Laboratory Technologist to support clinical studies.

The role focuses on preparing and processing patient samples, running instruments, and executing assays per SOPs. You will work with Clinical Research Scientists, maintain sample tracking in LIMS, perform routine QC and equipment maintenance, document results, and may perform RNA/DNA extraction or PCR‑based assays.

Qualifications

• Bachelor's degree and 1–2 years in a clinical or research lab environment.
• 24 semester hours of medical laboratory technology or science courses with Chemistry & Biology exposure.
• Technical proficiency, scientific creativity, collaboration and initiative.
• Path toward ASCP Technologist in Molecular Biology (MB) board certification.

Responsibilities

• Prepare and process patient samples and operate laboratory instruments.
• Execute assays in accordance with SOPs and study plans.
• Maintain sample tracking and workflows in LIMS.
• Perform routine quality control and equipment maintenance.
• Document results in compliance with quality and regulatory requirements.
• Assist with RNA/DNA extraction or PCR-based assays as needed and support assay development.

Skills

Technical proficiency

Scientific creativity

Collaboration

Independent initiative

Education

Bachelor of Science in Chemistry / Biology / Clinical Laboratory Science / Medical Technology

50-week US military medical laboratory training program

Job description

Castle Biosciences Inc.

We are looking to hire a full‑time Clinical Research Laboratory Technologist working from our laboratory in Phoenix, AZ, with a start date on or before June 30, 2026.

Benefits

Exceptional Benefits Package:

• Excellent 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 Upon Hire

Position Overview

A DAY IN THE LIFE OF A Clinical Research Laboratory Technologist

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 completion of a 50‑week U.S. military medical laboratory training program for laboratory technicians as high complexity testing.
• Minimum 24 semester hours of medical laboratory technology courses or 24 semester hours of science courses, including 6 semester hours of both Chemistry & Biology and an additional 12 semester hours in any combination of Chemistry, Biology, or Medical Laboratory.
• Technical proficiency, scientific creativity, successful collaboration with others, and independent initiative.
• The Clinical Research Technologist in the clinical research laboratory can be placed on a track toward obtaining American Society of Clinical Pathology (ASCP) Technologist in Molecular Biology (MB) board certification if not already credentialed upon hire.

Preferred

• Preferred 2–4 years of clinical laboratory experience or 2–4 years of clinical research experience.

Schedule

• Monday – Friday, 8:30 am to 5:00 pm, exempt position, working from our Phoenix, AZ laboratory.

Work Authorization

All candidates must be legally authorized to work in the United States. Currently, Castle Biosciences does not sponsor H‑1B visas, OPT, or employment‑related visas.

EEO Statement

Castle Biosciences is an equal‑opportunity employer as to all protected groups, including protected veterans and individuals with disabilities.

Reasonable Accommodation

If you have a disability and you believe you need a reasonable accommodation in order to search for a job opening or to submit an online application, please e‑mail [e-mail]. This email is created exclusively to assist disabled job seekers whose disability prevents them from being able to apply online. Only messages left for this purpose will be returned. Messages left for other purposes, such as following up on an application or technical issues not related to a disability, will not receive a response.