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Principal Scientist, Data Science; Translational Engineering

Job in Cambridge, Middlesex County, Massachusetts, 02140, USA
Listing for: Johnson & Johnson
Full Time position
Listed on 2026-07-24
Job specializations:
  • IT/Tech
    AI Engineer (Applied/Software), Data Engineering
Salary/Wage Range or Industry Benchmark: 180000 - 240000 USD Yearly USD 180000.00 240000.00 YEAR
Job Description & How to Apply Below
Position: Principal Scientist, Data Science (Translational Knowledge Engineering)

Position Summary

The Principal Translational Knowledge Architect & Graph Lead will design and implement the semantic and knowledge architecture that enables AI‑driven reasoning across the drug discovery and development lifecycle. This role serves as the scientific and technical lead for ontology development, knowledge graph design, semantic interoperability, and AI‑ready knowledge representation.

Mission

Build the semantic foundation that enables AI systems to reason across discovery, preclinical, clinical, and post‑marketing domains while preserving scientific meaning, provenance, and translational fidelity.

Key Responsibilities Semantic Architecture & Knowledge Modeling
  • Design and maintain enterprise knowledge models spanning discovery biology, toxicology, safety pharmacology, pathology, clinical development, pharmacovigilance, and real‑world evidence.
  • Develop semantic frameworks that support translational reasoning across the R&D lifecycle.
  • Create conceptual, logical, and physical knowledge models supporting AI‑enabled scientific discovery.
Ontology Engineering & Governance
  • Lead ontology strategy, development, governance, and lifecycle management.
  • Curate and extend biomedical ontologies for translational safety and efficacy use cases.
  • Establish governance processes, quality standards, and semantic review procedures.
  • Ensure semantic consistency, provenance, traceability, and FAIR data principles.
Knowledge Graph & Reasoning Infrastructure
  • Design RDF‑based knowledge graph architectures and related semantic technologies.
  • Develop semantic mappings, inference rules, and reasoning frameworks supporting scientific decision‑making.
  • Define knowledge representations enabling GraphRAG, semantic retrieval, AI agents, and reasoning systems.
  • Establish semantic interoperability across heterogeneous data sources and standards.
Translational Data Harmonization
  • Develop semantic bridges across major industry standards and ontologies including SEND, SDTM, ADaM, MedDRA, HPO, MONDO, SNOMED CT, FHIR, OMOP, Cell Ontology, and Protein Ontology.
  • Enable AI systems to traverse translational boundaries while preserving biological and clinical context.
Scientific & Cross‑Functional Leadership
  • Partner with stakeholders across Discovery, Preclinical Safety, Clinical Development, Pharmacovigilance, Data Science, and Digital Health.
  • Collaborate with engineering teams responsible for data products, pipelines, and AI platforms.
  • Influence enterprise semantic strategy and represent the organization in external standards and ontology communities.
Required Qualifications Education
  • PhD or Master’s degree in Biomedical Informatics, Bioinformatics, Computational Biology, Computer Science, Information Science, Knowledge Engineering, or a related scientific discipline.
Experience
  • 5+ years in biomedical informatics, semantic technologies, knowledge engineering, or scientific data architecture.
  • Experience designing ontology‑driven knowledge systems in life sciences, healthcare, or pharmaceutical R&D.
  • Experience across multiple phases of drug discovery and development.
Technical Expertise
  • Ontology development and governance
  • Knowledge representation
  • RDF, OWL, SHACL, SPARQL, and Semantic Web technologies
  • Enterprise ontology management platforms, RDF graph architectures, semantic APIs, and FAIR data principles
Domain Knowledge
  • Translational science, toxicology, safety pharmacology, clinical development, pharmacovigilance, regulatory data standards.
  • Experience with SEND, SDTM, ADaM, MedDRA, HPO, MONDO, FHIR, OMOP.
Preferred Qualifications
  • Experience building semantic foundations for AI, GraphRAG, agentic AI, or scientific reasoning systems.
  • Familiarity with LLM‑based retrieval and reasoning architectures.
  • Support for translational safety, efficacy, biomarker, or mechanistic reasoning use cases.
  • Contributions to ontology standards, open‑source biomedical ontologies, or scientific knowledge graph initiatives.
Leadership Competencies
  • Strategic thinker capable of translating scientific challenges into scalable knowledge architectures.
  • Strong communicator engaging scientists, clinicians, data scientists, engineers, and senior leadership.
  • Ability to operate in ambiguous, highly…
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