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Xenon Seven

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Research Advisor, Computational Chemistry

Location

United States

Posted

4 hours ago

Salary

0

Seniority

Senior

Postgraduate DegreeEnglishCloudPythonRust

Job Description

Research Advisor, Computational Chemistry

Xenon Seven

• Perform molecular dynamics simulations of chemically modified oligonucleotide duplexes and single‑stranded species to characterize the structural and thermodynamic consequences of sugar, backbone, and base modifications • Apply free energy methods (FEP, thermodynamic integration, MM/PBSA, MM/GBSA) to predict modification‑dependent binding affinities, duplex stability, and protein–oligonucleotide interactions • Develop and validate force field parameters for novel nucleotide analogs using quantum mechanical calculations, enabling rapid computational evaluation of new chemistries emerging from the medicinal chemistry team • Build and apply cheminformatics descriptors and QSAR/QSPR models adapted for chemically modified oligonucleotides, moving beyond sequence‑only representations to capture the full chemical diversity of the modification space • Collaborate with medicinal chemists and biologists to integrate computational predictions with experimental SAR data, contributing to the identification of optimal modification patterns for on‑target potency, selectivity, metabolic stability, and safety • Contribute to reusable computational workflows, data assets, and modeling platforms that support cross‑program learning and integration with the team’s unified machine learning models • Present findings to cross‑functional teams and contribute to scientific strategy discussions, publications, and patent applications

Job Requirements

  • PhD in computational chemistry, physical chemistry, chemical physics, biophysics, or a closely related field
  • Demonstrated expertise in molecular dynamics simulation of nucleic acids or chemically modified biopolymers
  • Experience with free energy calculation methods applied to biomolecular systems
  • Proficiency in cheminformatics toolkits (RDKit, OpenEye, or equivalent) and/or commercial CADD platforms (Schrödinger, MOE)
  • Strong programming skills in Python, with experience in scientific computing libraries
  • Familiarity with machine learning and AI methods applied to molecular sciences, including experience with predictive modeling for molecular properties, chemical optimization, or structure–activity relationships
  • Excellent written and oral communication skills with ability to present complex computational results to diverse scientific audiences including medicinal chemists and biologists
  • Experience with high‑performance computing and/or cloud‑based simulation environments
  • Demonstrated ability to work collaboratively in cross‑functional team environments
  • Experience with force field parameterization for non‑standard nucleotide analogs, including QM‑derived charge fitting (RESP, AM1‑BCC) and torsion parameter development
  • Familiarity with quantum chemical methods (DFT, ab initio) for electronic structure analysis of modified nucleotides and their impact on duplex stability and reactivity
  • Understanding of how chemical modifications influence oligonucleotide secondary structure, folding, and conformational dynamics, including modification‑dependent effects on duplex geometry and protein recognition
  • Experience with machine learning approaches for molecular property prediction, including graph neural networks, molecular language models, or transformer‑based architectures applied to chemical or biopolymer data
  • Familiarity with molecular representations for modified oligonucleotides (HELM, extended SMILES, or similar macromolecular encoding schemes)
  • Knowledge of oligonucleotide‑specific ADME properties, including nuclease‑mediated metabolism, plasma protein binding of phosphorothioate backbones, and endosomal escape
  • Track record of peer‑reviewed publications demonstrating expertise in computational chemistry applied to nucleic acids or modified biopolymers
  • Deep understanding of nucleic acid structure and chemistry, including familiarity with common therapeutic modifications (2’‑OMe, 2’‑F, 2’‑MOE, LNA/cET, phosphorothioate, GalNAc conjugates)
  • Experience designing computational workflows that integrate with automated experimental platforms and high‑throughput screening
  • Proficiency in Rust or other systems‑level languages for performance‑critical scientific computing is a plus

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