Scientist II / Senior Scientist, Medicinal Chemistry

General Proximity • San Francisco, CA

14h • Onsite

About The Position

General Proximity is a seed-stage startup developing the next generation of induced proximity medicines (IPMs). Our OmniTAC drug discovery engine furnishes molecules that co-opt existing cellular machinery to overcome therapeutic challenges, which have remained unapproachable to other modalities for decades. We are seeking a first-rate medicinal chemist to help us pioneer this uncharted frontier of drug discovery. A long-standing challenge in drug discovery is the development of molecules capable of modulating difficult or "undruggable" targets. Disease-causing proteins can be dysfunctional in many different ways, but our armamentarium for fixing them is quite limited. The most common mechanism of action for FDA-approved drugs is inhibition, but there are many other possible perturbation types whose potential remains unrealized. General Proximity is a seed-stage drug discovery company developing a novel platform technology to solve this problem. We make bifunctional drugs that induce the modification of drug targets by existing cellular machinery (rather than through direct modulation by the drug, the classical approach). Historically, the development of technologies that allow one to push new buttons in biology has been an incredibly fertile field for the discovery of new medicines, and our technology holds the same promise. We are seeking an exceptional medicinal chemist to join our Chemistry and Drug Discovery team. This is a rare opportunity to help build a next-generation drug discovery company from the ground up and contribute directly to the creation of a novel class of therapeutics. In this role, you will work at the intersection of chemistry, biology, and platform innovation, partnering closely with cross-functional teams to advance our core discovery capabilities and drive programs from concept through lead optimization. You will play a central role in molecular design of next generation IPMs, external execution, planning compound screening in routine biophysical or cellular assays and driving data interpretation, and scientific strategy, with the chance to make an outsized impact in a fast-moving startup environment. We are looking for a scientist who combines deep medicinal chemistry expertise with creativity, urgency, and a rigorous builder’s mindset.

Requirements

• PhD in Chemistry, Medicinal Chemistry, or a related field
• A minimum of 3+ years of industry experience in small-molecule drug discovery
• Strong foundation in medicinal chemistry and its application to disease-focused drug discovery
• Experience designing, synthesizing, and optimizing induced proximity medicines, including PROTACs or related approaches
• Experience across hit finding, hit-to-lead, and lead optimization
• Demonstrated success optimizing compounds for oral exposure and interpreting pharmacokinetic data across multiple species
• Deep understanding of physicochemical properties and in vitro DMPK parameters, including solubility, permeability, metabolic stability, and plasma protein binding, and how to apply them to lead optimization
• Experience managing external chemistry CROs and driving synthetic programs efficiently

Nice To Haves

• Experience contributing to programs that advanced from discovery into clinical development
• Background in computational chemistry, molecular modeling, or molecular dynamics
• Familiarity with chemical biology or structural biology techniques, including assay development, compound profiling, pulldown experiments, protein purification, or crystallography
• Experience with HTS or phenotypic screening
• Experience in proteomics, including PTM analysis or chemoproteomic target deconvolution

Responsibilities

• Design and advance medicinal chemistry strategies for next-generation induced proximity medicines, including PROTACs and related modalities
• Lead compound design and SAR campaigns from hit finding through hit-to-lead and lead optimization
• Manage external chemistry CROs, including compound design prioritization, synthetic execution, timelines, and data review
• Direct external DMPK studies and interpret in vitro and in vivo data to guide compound progression
• Partner closely with Biology and Platform teams to design screening strategies and support compound evaluation in biochemical, biophysical, and cellular assays
• Contribute to mechanistic studies that strengthen understanding of lead molecules and inform program direction
• Support intellectual property strategy through invention generation and contributions to patent filings
• Help evaluate and expand opportunities into new disease areas and therapeutic applications

Benefits

• Strong equity incentives
• Top tier medical, dental, and vision coverage + One Medical membership
• 401(k) retirement plans
• Education and health/fitness incentive programs
• Meditation retreats—do a ten-day Vipassana retreat without counting towards vacation days
• Reading budget

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: Ph.D. or professional degree