About B12
B12 is building an AI-native software platform for chemistry.
Our products help scientists move from a target molecule to a synthesis plan, design experiments, and translate those experiments into workflows for automated laboratories. The platform combines scientific software, AI agents, data infrastructure, and real lab automation.
Today, b12 Labs supports 5 of the top 10 largest pharma companies, running chemistry faster each week. You will help us further grow that usage and improve the overall experience in the platform.
We have built the core technology. Now we need an exceptional engineer to make the entire product feel fast, dependable, and coherent for customers.
Why join
You will work on software where better engineering can directly accelerate scientific discovery and reduce weeks of manual work in the laboratory. You will join early enough to shape the product and company, while working on technology that already spans AI, chemistry, and physical automation.
The founding team
b12 Labs was founded by Zlatko Jončev and Andres M. Bran.
Zlatko brings deep experience in organic synthesis, catalysis, medicinal chemistry, and laboratory automation. Andres builds AI agents for chemistry and systems that translate scientific intent into executable laboratory workflows.
Between us, we have worked at Roche, Chemspeed, the Max Planck Institute, and EPFL, where we helped pioneer AI agents for chemistry and retrosynthesis.
We started B12 after repeatedly seeing the same problem: scientists had powerful instruments and increasingly capable AI models, but fragmented software still forced them to connect every step manually—or become programmers just to operate their laboratories.
We are building the unified software layer we wished existed: from synthesis planning and experiment design through robotic execution.