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b12 Labs
Chemical Copilot for Pharma and Biotech
Last verified September 1, 2026 · Updated daily
Open roles at b12 Labs
Nothing live right now. We re-check b12 Labs daily and this page updates the moment they post.
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A role stays uncontested for about four days. Here's the window — and where we put you in it.
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Watching b12 Labs
0 applicantsRole spotted & verified
1You get the alert
1You've applied
~8Hits the job boards
250+Working at b12 Labs
b12 Labs is Chemical Copilot for Pharma and Biotech, founded in and now <50 people. What this means for you: broad remit, direct access to founders, and equity that still means something if the company works out.
San Francisco, CA, USA is where most b12 Labs positions are located.
How to actually get hired at b12 Labs
Why applying the normal way doesn't work
At this size (<50 people), b12 Labs has no recruiting function. Founders handle hiring alongside everything else. Reach them directly or get lost in the inbox.
Who to contact at b12 Labs
We're still mapping b12 Labs's hiring process. At this size (<50 people, Healthcare, Drug Discovery and Delivery), a founder or department head typically decides, but we haven't confirmed it yet.
What b12 Labs screens for
relevant experience and ability to operate autonomously
Tailor your CV to the specific b12 Labs role rather than sending a general one. Applications that mirror the language of the job description clear automated filters at a materially higher rate.
Mistakes that kill b12 Labs applications
Don't send the same CV you sent everywhere else. At <50 people it's obvious, and it's the fastest rejection there is.
Lead with their problem, not your ambition. b12 Labs is focused on is growing — show you understand that.
Most Healthcare, Drug Discovery and Delivery applications get ghosted. A day-five follow-up can double your response rate.
Applying to b12 Labs? Get the contact, not the form.
The b12 Labs interview process
3 stages · 7 days typical · take-home: no · modelled from similar companies
We don't yet have verified candidate reports for b12 Labs. What follows is the typical process for a <50-person Healthcare, Drug Discovery and Delivery company — treat it as a model, not confirmed detail.
Interview stages
Intro Call
Video call · 30 min
Culture fit and role expectations
Founder or hiring manager
Technical Deep Dive
Video call or in-person · 60 min
Past projects and problem-solving approach
Technical founder or lead
Final Round
In-person or video · 45 min
Team fit and offer discussion
Founding team
b12 Labs interview timeline
b12 Labs runs about days from first contact to offer. The median for Healthcare, Drug Discovery and Delivery companies at <50 people is 10 days, so b12 Labs is faster than most.
Interviewed at b12 Labs?
Tell us how it went — stages, questions, timeline. Takes 90 seconds and it's how this page stays accurate for the next person.
Submit your b12 Labs interview experience →b12 Labs jobs, frequently asked questions
Is b12 Labs hiring right now?
We aren't tracking any live b12 Labs vacancies today. We re-check daily and this page updates as soon as a role appears.
How do I apply for a job at b12 Labs?
Click through to apply, or see our detailed guide on landing a job at b12 Labs.
Does b12 Labs respond to cold emails?
We haven't verified response rates at b12 Labs yet.
Who is the hiring manager at b12 Labs?
At this size, hiring is usually run by a founder or department head.
What ATS does b12 Labs use?
b12 Labs uses Greenhouse.
How competitive is it to get hired at b12 Labs?
Roles at <50-person Healthcare, Drug Discovery and Delivery companies typically draw 50-100 applicants in the first two weeks. Applying inside 72 hours of a posting going live is the single biggest lever you control.
How many rounds is the b12 Labs interview?
3 stages: Intro Call, Technical Deep Dive, Final Round.
Is the b12 Labs interview hard?
The interview emphasizes relevant experience and culture fit over abstract problems. Hardest stage: Final Round.
Does b12 Labs give a take-home task?
No, b12 Labs does not include a take-home stage.
How long does b12 Labs take to get back to you?
Around 7 days across the full process.
What should I prepare for the b12 Labs interview?
Prepare for relevant experience and culture fit. A <50-person startup wants proof you can ship, not that you can whiteboard.
Where is b12 Labs based?
b12 Labs is headquartered in San Francisco, CA, USA.
Get b12 Labs roles before they're posted
A role stays uncontested for about four days. Here's the window — and where we put you in it.
From $9/month, cancel any time.
Watching b12 Labs
0 applicantsRole spotted & verified
1You get the alert
1You've applied
~8Hits the job boards
250+