BillionToOne reviews

4.4

84% would recommend to a friend

(86 total reviews)

Oguzhan Atay

92% approve of CEO

91% positive business outlook

BillionToOne has an employee rating of 4.4 out of 5 stars, based on 86 company reviews on Glassdoor which indicates that most employees have an excellent working experience there. The BillionToOne employee rating is 25% above average for employers within the Pharmaceutical & Biotechnology industry (3.5 stars).

Reviews by job title

86 reviews
5.0
Sep 12, 2025
Recommend
CEO approval
Business Outlook

Pros

Working in Client Services at a startup has been both challenging and rewarding. The pace is fast and no two days are the same, which means there’s constant opportunity to learn and stretch outside of a traditional job description. Leadership is visible and approachable, and ideas from the frontline are taken seriously—there’s real room to influence process and product direction. Because the company is growing quickly, there are plenty of chances to step up, take ownership of projects, and build skills that might take years to access in a larger, more rigid organization.

Cons

Honestly, the challenges here are the same as in any startup: things move quickly, priorities can shift, and sometimes processes aren’t fully built yet. For some, that can feel unstructured or overwhelming, but for others, it’s the most exciting part of the role. If you thrive on growth, problem-solving, and being part of building something from the ground up, then it doesn’t feel like a “con” at all.

1.0
Sep 11, 2025
Recommend
CEO approval
Business Outlook

Pros

-Decent pay and good benefits -great products

Cons

unrealistic expectations and if you do not meet them, you will be fired in three months. there is a reason jobs are always posted at this company. almost my entire training class was gone after three months. do not leave a stable job to come here

5.0
Aug 26, 2025

Great People

Anonymous employee
Recommend
CEO approval
Business Outlook

Pros

-good perks -funny coworkers -consistency in work

Cons

-you have to fight for yourself to get recognized - bite your tongue because any criticism is “talking bad”

Viewing 13 - 15 of 86 Reviews

Glassdoor has 95 BillionToOne reviews submitted anonymously by BillionToOne employees. Read employee reviews and ratings on Glassdoor to decide if BillionToOne is right for you.