Alnylam Reviews

3.4

54% would recommend to a friend

(310 total reviews)
avatar

Yvonne Greenstreet

74% approve of CEO

68% positive business outlook

Alnylam has an employee rating of 3.4 out of 5 stars, based on 310 company reviews on Glassdoor which indicates that most employees have a good working experience there. The Alnylam 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

310 reviews
1.0
4 Jun 2026
Recommend
CEO approval
Business outlook

Pros

Social outing is amazing, it’s the location in the center of Cambridge is convenient because the farm market is just outside the company building with multiple discounts for the employees and contractors.

Cons

One of the biggest challenges for me was the culture within the Analytical Development in Cambridge. I saw the toxic environment firsthand , where some long-tenured employees who have been with the company since its early days would yell at contractors over relatively minor issues, such as scheduling or administrative tasks. As a new employee, it was uncomfortable to witness and caused me to believe this behavior is tolerated so I left after one year. In my previous roles, I had never seen full-time employees communicate with contractors in an bad manner. I believe the AD managers and long tenure employees would need to be retrained on expectations around professionalism, respectful communication, and constructive feedback. Regardless of title or employment status, because then everyone will be happy to work at AD as they get treated with respect.

Viewing 1 - 3 of 310 Reviews

Glassdoor has 423 Alnylam reviews submitted anonymously by Alnylam employees. Read employee reviews and ratings on Glassdoor to decide if Alnylam is right for you.