January reviews

2.5

24% would recommend to a friend

(45 total reviews)

24% positive business outlook

January has an employee rating of 2.5 out of 5 stars, based on 45 company reviews on Glassdoor which indicates that most employees have an average working experience there. The January employee rating is 31% below average for employers within the Personal Consumer Services industry (3.6 stars).

Reviews by job title

45 reviews
5.0
Sep 22, 2025
Recommend
CEO approval
Business Outlook

Pros

January is one of the rare companies where you can truly be proud of what you build. Its mission is to improve people’s lives by empowering them to understand their bodies—helping them eat better, manage glucose levels, and take control of their health. Today, the company is going far beyond glucose by incorporating blood tests, wearable devices, and other health inputs. Using advanced machine learning and AI, January delivers personalized insights and actionable recommendations that don’t just extend longevity but meaningfully improve healthspan. The team includes some of the brightest minds, united by a deep commitment to this vision. At the center is the CEO, whose relentless dedication ensures that January’s mission can reach and benefit the population at large.

Cons

A startup like this isn’t for everyone—and that’s what makes it special. Success here takes commitment and a true all-in mindset. While we value work-life balance, thriving at January means going beyond “just doing a job” to helping bring a bold vision to life. If you have a startup mindset and a passion for making an impact, this is the place to excel.

1.0
Sep 27, 2024

Toxic Work Environment, Minimal Growth

Anonymous employee
Recommend
CEO approval
Business Outlook

Pros

The company’s mission is well-intentioned and aims to make a positive impact.

Cons

Leadership/CEO fosters a toxic work culture where feedback and concerns are often ignored. Little to no opportunities for career growth or professional development. High turnover, lack of clear direction, and constant restructuring create a stressful environment.

avatar
January Response
9mo
Thank you for sharing your perspective. We’re glad you highlighted our mission to transform health and longevity through science and AI. It's something that inspires all of us. Achieving that mission requires high standards, innovation, and collaboration, and we know that building the right culture is an ongoing journey. Our leadership team brings deep experience across science, technology, and business, and is committed to fostering a workplace built on respect, accountability, and excellence. We also recognize that the pace and ambition of a fast-growing company can feel challenging at times. We remain focused on creating an environment where talented people can do their best work, grow professionally, and make a meaningful global impact on cardiometabolic disease. Integrity, science, and care for our community guide everything we do.
5.0
Apr 30, 2024
Recommend
CEO approval
Business Outlook

Pros

The company offers many opportunities for professional growth. It is a place for constant learning and stretching yourself to achieve ambitious long—and short-term goals. Everyone who works there feels like they are contributing to something important, and the impact of their work is tangible; this is true for entry-level roles as well as more senior. It is a great place to work with an excellent multidisciplinary, cross-functional, and truly diverse team. The company is also very transparent and the leadership accessible.

Cons

Working in a start-up can have many competing demands, requiring flexibility and the ability to pivot quickly. Expectations are very high (not necessarily bad), and resources can be lean to help achieve them.

Viewing 13 - 15 of 45 Reviews

Glassdoor has 47 January reviews submitted anonymously by January employees. Read employee reviews and ratings on Glassdoor to decide if January is right for you.