R&D Sr. Scientist, Pipeline

Castle Biosciences Inc. is growing, and we are looking to hire a full-time R&D Sr. Scientist working from our Friendswood, TX headquarters with a start date of July 15, 2026.

About the role

The Senior Scientist, Pipeline, will engage with colleagues in R&D to evaluate, develop, and validate clinical devices and molecular biomarkers that improve disease diagnosis, prognosis, and/or prediction of response to therapy. You will evaluate opportunities for new clinical devices and tests, collaborate with cross-functional colleagues to create business cases and project plans, and support Castle's Clinical Research team through the organization, auditing, and interpretation of clinical research and technical data. Additionally, you will work with teams across Castle Biosciences to produce critical scientific messaging materials, including peer-reviewed publications, abstracts, supportive slide decks, payer reimbursement documents, patient reports, and commercial literature to train internal personnel and educate external customers (physicians) and patients.

Requirements

• Master's or PhD in life sciences or a bachelor's degree with a minimum of 3 years of postgraduate medical writing experience in life sciences or industry equivalent in the biotech sector.
• PhD level training in life sciences or biomedical engineering.
• The ability to successfully communicate and teach in a complex and competitive environment.

Benefits

• 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.

Schedule

• Monday - Friday, in-office 5 days a week from 9:00 am to 5:30 pm, exempt position.
• Location: Friendswood, TX headquarters (preferred). May consider Pittsburgh, PA @ Nova Place office.

About Castle Biosciences Inc.

At Castle, it all comes down to people. We believe that disease management and treatment decisions can be better informed through a person's unique biology, revealed through the scientific rigor of our innovative, laboratory-developed tests. We are committed to empowering healthcare providers and patients with the goal of improved outcomes. Every employee at Castle has an impact on patient care, and we work to ensure that everyone finds their work to be both challenging and rewarding. We behave with integrity and treat our colleagues with respect and kindness. Our culture fosters an environment of trust, transparency, and collaboration. We prioritize and encourage internal growth and professional development.

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.