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
1.0
Jun 3, 2021
Recommend
CEO approval
Business Outlook

Pros

Fast growth, great products and team

Cons

Overwork and underappreciated, no structure

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 13, 2024

Why BillionToOne Stands Out

Anonymous employee
Recommend
CEO approval
Business Outlook

Pros

I've worked at numerous startups and the psychological safety I've experienced here has been a game changer. It's admirable to see the CEO and People team's commitment to making decisions that are balanced in both what's reasonable for the business and best for its employees. Hard work and a positive attitude does not go unnoticed here and I've seen managers care deeply about their team. No company and no person is going to get it right 100% of the time, but the fact that they strive for this, listen to feedback, and course correct when needed, things here are lightyears away from other companies. The outlook of the business and the thoughtful decision-making of its CEO makes it exciting to be part of something like this.

Cons

This is not really a con but more of a heads up. They take leveling and impact seriously here. Where one may find climbing the ladder easier somewhere else, it takes more grit and display of impact here. The goal is to ensure you're fully set up to succeed in the next level when you arrive and avoid inflation of titles. Stick it through, master your craft, and it will be noticed.

Viewing 7 - 9 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.