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Principal Scientist, Translational Lead

Arcellx
Full-time
Remote friendly (Rockville, MD)
United States
$150,000 - $177,000 USD yearly
Clinical Research and Development

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Role Summary

We are seeking a dynamic, scientifically rigorous Principal Scientist, Translational Lead to drive translational strategy and execution across early-stage clinical programs. This cross-functional role combines biological insight, data fluency, and operational pragmatism, ideally suited for a candidate with a strong translational medicine background who is also comfortable performing hands-on analytics and drafting infrastructure requirements.

Responsibilities

  • Drive translational strategy for early-phase clinical programs, incorporating biomarker hypotheses, patient selection, and endpoint optimization.
  • Serve as the lead for biomarker components in clinical protocols, IND submissions, and regulatory engagements.
  • Align translational goals with key clinical milestones and trial objectives.
  • Design and execute analysis plans for high-dimensional datasets including flow cytometry, RNA-seq, single-cell, and spatial omics.
  • Lead integration of molecular and clinical data to uncover pharmacodynamic signals, stratification markers, and mechanisms of resistance.
  • Automate and analyze complex flow cytometry and CyTOF datasets using tools such as FlowJo, R (e.g., flowCore, CytoML, ggcyto), or Python-based pipelines.
  • Apply modern statistical and machine learning methods to uncover actionable insights, ensuring analytic reproducibility and compliance.
  • Contribute to governance meetings, internal reviews, and external scientific communications (e.g., manuscripts, abstracts).
  • Provide thought leadership at the interface of clinical development and translational science.
  • Evaluate new biomarker platforms and external datasets to expand translational capabilities.
  • Mentor junior scientists and cultivate a high-performing, collaborative translational culture.

Qualifications

  • PhD in Bioinformatics, Computational Biology, Immunology, Molecular Biology, or related discipline.
  • 8+ years of industry experience in translational medicine, biomarkers, or bioinformatics in oncology, immunology, or rare disease.
  • Proficiency in automated flow cytometry analysis, including multicolor panel data interpretation and integration with other biomarker modalities.
  • Hands-on fluency in R and/or Python for statistical modeling, data visualization, and reproducible bioinformatics.
  • Demonstrated ability to design and execute translational analysis plans and influence clinical development.
  • Experience contributing to INDs or regulatory filings involving biomarker or flow cytometry data.
  • Familiarity with early-phase trials in cell therapy, immuno-oncology, or engineered therapeutics.
  • Experience working in GCP/GxP-regulated environments or defining analytics/compliance workflows.
  • Exposure to tools such as FlowJo, Cytobank, Spectre, or Bioconductor-based cytometry packages.
  • Background in small biotech or matrixed R&D settings with high execution ownership.

Skills

  • Biomarker discovery and translational data integration
  • High-dimensional data analysis (flow cytometry, transcriptomics, proteomics)
  • Statistical modeling and machine learning for translational science
  • Cross-functional collaboration and scientific communication
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