Cheminformatics & Synthesis Prediction

Ginkgo Bioworks Inc.•Boston, MA

9h•$115,000 - $165,000•Onsite

About The Position

The Small Molecules team is looking for a cheminformatics scientist to support the computational work of building and navigating makeable chemical spaces. This includes building the space itself, developing tools that help scientists search and use it, and predicting the outcomes of chemical reactions that connect design to synthesis. We are hiring a Senior Engineer I, Cheminformatics to develop and operate the cheminformatics workflows behind Ginkgo’s makeable chemical space and reaction-prediction capabilities. This is a hands-on production role spanning two connected areas: building and maintaining large makeable chemical spaces through reaction enumeration, and integrating, evaluating, and improving reaction-prediction workflows such as retrosynthesis and reaction-condition prediction. You will work with reaction templates, molecular representations, functional-group logic, vendor building blocks, predictive models, and reaction data that feeds the design–make–test loop. The ideal candidate combines practical cheminformatics engineering, experience with reaction prediction, and strong chemistry fluency. Internal chemists provide deep synthetic and medicinal chemistry expertise; your role is to translate their questions into reliable computational workflows and explain what the systems did and why. This is not an ML research position. We prefer to adopt or adapt published methods and open-source tools before building new systems.

Requirements

Ph.D. in cheminformatics, computational chemistry, organic chemistry, medicinal chemistry, or a closely related quantitative field, plus 3 years of relevant industry or postdoctoral experience; or an M.S. with 6 years, or a B.S. with 9 years, of relevant experience.
Strong practical experience in cheminformatics and reaction prediction, including experience with retrosynthesis, reaction-condition prediction, synthetic accessibility, or related workflows.
Experience working with reaction SMARTS, functional-group classification, molecular representations, and chemical structure data.
Production experience with RDKit or an equivalent cheminformatics toolkit.
Experience working with large chemical or vendor building-block catalogs and understanding the trade-offs involved in coverage, scale, and data quality.
Strong Python skills and experience writing code that others can run and maintain.
Familiarity with service-oriented software, Docker, environment-based configuration, and data pipelines.
Working knowledge of common medicinal-chemistry synthetic transformations and the ability to collaborate effectively with synthetic chemists.
Clear technical communication skills and a disciplined approach to documentation, provenance, and reproducibility.

Nice To Haves

Experience with large makeable or synthesizable chemical spaces, whether commercial or in-house.
Experience operating a combinatorial library-enumeration pipeline or reaction-prediction workflow in production.
Experience evaluating predictive models, including uncertainty estimation, calibration, applicability domain, or ranked candidate generation.
Experience with regiochemistry, stereochemistry, chemical registration systems, ELN/LIMS integration, or chemical data standards.
Experience connecting computational design to wet-lab results in a design–make–test–learn environment.
Contributions to open-source cheminformatics or experience evaluating third-party chemistry platforms.
Experience building and optimizing Model Context Protocols (MCPs), agentic frameworks, or integrating cheminformatics tools with LLM-based workflows.

Responsibilities

Develop and improve reaction-enumeration workflows, including reaction SMARTS templates, functional-group gating, building-block curation, and production runs.
Work with large vendor catalogs while balancing chemical coverage, price, availability, lead time, and data quality.
Improve treatment of regioisomers, stereochemistry, resolution limits, and other sources of ambiguity in enumerated chemical space.
Build reliable workflows for structure handling, reaction execution, sanitization, identifiers, SDF files, and metadata.
Integrate and evaluate approaches for retrosynthesis, synthetic success, reaction-condition prediction, and related reaction modeling tasks.
Assess models and workflows for calibration, coverage, applicability domain, and practical usefulness; surface uncertainty and risk flags rather than bare point estimates.
Help connect predicted reactions and enumerated compounds to experimental design, make–test workflows, and downstream learning.
Consolidate reaction data—including conditions, yields, failed reactions, and provenance—into a shared, machine-readable source that supports future model improvement.
Write maintainable code and contribute to service-oriented systems, deployment workflows, and data pipelines.
Partner with internal chemists and cross-functional teams to translate scientific questions into reliable computational workflows and interpret results.
Scope and review external or consultant work with clear specifications and acceptance criteria.
Work on commercial digital products by integrating pricing and ordering data and functionalities, and deploying and maintaining related services and tools.
Design, build, and optimize Model Context Protocols (MCPs) and agentic frameworks to support LLM-based work and integrate cheminformatics tools into automated workflows.