Castle Biosciences Reviews

3.2

49% would recommend to a friend

(65 total reviews)
avatar

Derek Maetzold

60% approve of CEO

55% positive business outlook

Castle Biosciences has an employee rating of 3.2 out of 5 stars, based on 65 company reviews on Glassdoor which indicates that most employees have a good working experience there. The Castle Biosciences employee rating is in line with the average (within 1 standard deviation) for employers within the Pharmaceutical and biotechnology industry (3.5 stars).

Reviews by job title

65 reviews
5.0
15 June 2026
Recommend
CEO approval
Business outlook

Pros

The company culture is unparalleled. Not only is the company making a difference in patients lives, it also cares deeply for the employees. We are growing and with growing comes some change.

Cons

None, it is truly a collaborative work environment.

1.0
8 June 2026

Revenue First, Science Second

Recommend
CEO approval
Business outlook

Pros

Compensation and benefits were competitive.

Cons

The company culture heavily prioritizes the sales organization over nearly every other department. Business decisions often appear driven by revenue generation and test adoption rather than collaboration across functions or broader healthcare objectives. Employees outside of sales may feel their contributions are undervalued compared to those directly tied to sales performance. Leadership culture can feel insular, with many key positions occupied by individuals who have longstanding personal, family, or social connections within the organization. This can create a perception that advancement, accountability, and decision-making are not always applied consistently across employees. Tenure appears to carry significant weight in promotion decisions, sometimes resulting in leadership roles being filled by individuals with limited management experience outside of the company or limited healthcare industry experience. Employees who value scientific rigor, evidence-based decision-making, and open debate may find the culture frustrating. Individuals who are comfortable accepting established narratives without questioning them are likely to have a more positive experience. Constructive challenges to existing processes, products, or strategies are often met with resistance rather than genuine evaluation. A recurring concern was the organization's response to quality and process issues. For example, duplicate tests could be run on the same patient and produce differing results, raising questions about consistency and reliability. Rather than prioritizing process improvements to prevent duplicate testing or investing in efforts to better understand and address result variability, the response often appeared focused on adjusting employee performance metrics and operational targets. Opportunities to introduce data-driven improvements can be limited, particularly when proposed changes conflict with existing leadership priorities or established reputations. In my experience, there was greater emphasis on maintaining productivity and business objectives than on openly addressing concerns about test reproducibility, operational inefficiencies, or opportunities to strengthen confidence in the product itself. For a company operating in healthcare, I would have expected a stronger commitment to ensuring test accuracy, consistency, clinical reliability, and meaningful patient impact before focusing on growth and adoption. Employees seeking an environment where evidence, critical thinking, transparency, and continuous improvement consistently drive decision-making may find the culture misaligned with those expectations.

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Glassdoor has 66 Castle Biosciences reviews submitted anonymously by Castle Biosciences employees. Read employee reviews and ratings on Glassdoor to decide if Castle Biosciences is right for you.