Senior Scientist: Cheminformatics & Computational Chemistry

AllSTEM Connections
South San Francisco, CA

Duration: 6+ Months Contract

Hybrid job


Qualifications:

Hybrid work schedule. Remote candidates may be considered on a case-by-case basis.

We are seeking a highly motivated Cheminformatics Scientist to design, evaluate, and build end-to-end small molecule computational workflows within the TuneLab platform. This role requires strong hands-on expertise in state-of-the-art computational methods across the drug discovery pipeline, from virtual screening to lead optimization.

You will work at the intersection of cheminformatics, physics-based modeling, and machine learning, partnering closely with TuneLab software engineering and ML teams to deliver scalable, production-grade workflows.

This is a high-impact contract role, where you will be expected to independently evaluate tools, make build-vs-buy decisions, and deliver robust workflow solutions.

Required Qualifications:

• PhD or MS in Cheminformatics, Computational Chemistry, Medicinal Chemistry, or related field

• Strong understanding of small molecule drug discovery workflows

• Demonstrated expertise in:

o Substructure and similarity search (fingerprints, graph-based, embedding-based)

o Shape and pharmacophore searching

o Reaction-based and fragment-based enumeration

o Docking and structure-based design

o QSAR and ligand-based modeling

o Active learning and iterative design strategies

o Physics-based simulations (e.g., MD, FEP)

• Hands-on experience with tools such as:

o RDKit, OpenEye, or equivalent

o Docking platforms (e.g., Glide, AutoDock, GOLD)

• Strong programming skills in Python

Preferred Qualifications

• Experience working with ultra-large chemical libraries (e.g., Enamine REAL, WuXi Galaxy)

• Familiarity with generative chemistry approaches (SMILES-, graph-, or diffusion-based models)

• Experience integrating ML models into production workflows

• Experience with workflow orchestration tools (e.g., Airflow, Nextflow)


Responsibilities:

Key Responsibilities

End-to-End Workflow Development

• Design and implement workflows spanning:

o Virtual screening (ligand-based and structure-based)

o Hit identification and hit expansion

o Hit-to-lead selection

o Lead optimization

Method Development & Application

• Apply and integrate core computational chemistry and cheminformatics methods, including:

o Ultra-large library search:

 Substructure search

 Fingerprint and embedding-based similarity search

 Shape and pharmacophore-based screening

o Molecular enumeration:

 Reaction-based enumeration

 Fragment-based design and expansion

o Ligand-based modeling:

 QSAR, similarity, clustering, active learning loops

o Structure-based modeling:

 Docking, rescoring, pose prediction, structure-aware search

o Physics-based methods:

 Molecular dynamics (MD)

 Free energy perturbation (FEP) and related approaches

Cross-functional Collaboration

// // //