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Who We Are
BioMarin is a global biotechnology company that relentlessly pursues bold science to translate genetic discoveries into new medicines that advance the future of human health.
Since our founding in 1997, we have applied our scientific expertise in understanding the underlying causes of genetic conditions to create transformative medicines, using a number of treatment modalities.
Using our unparalleled expertise in genetics and molecular biology, we develop medicines for patients with significant unmet medical need. We enlist the best of the best - people with the right technical expertise and a relentless drive to solve real problems - and create an environment that empowers our teams to pursue bold, innovative science. With this distinctive approach to drug discovery, we've produced a diverse pipeline of commercial, clinical and preclinical candidates that have well-understood biology and provide an opportunity to be first-to-market or offer a substantial benefit over existing therapeutic options.
About Worldwide Research and Development
From research and discovery to post-market clinical development, our WWRD engine involves all bench and clinical research and the associated groups that support those endeavors. Our teams work on developing first-in-class and best-in-class therapeutics that provide meaningful advances to patients who live with genetic diseases. We are seeking a Senior Scientist 1 - Biophysical Characterization & Bioconjugation to lead analytical strategy and experimental design for therapeutic proteins and their bioconjugates-particularly enzyme- and antibody-based platforms. You will join the Biologics Therapeutic Modality Team, developing advanced biophysical workflows, designing custom assays to define structure-function relationships, and guiding conjugation strategies for next-generation molecules. Your contributions will directly influence lead candidate selection, manufacturability, and regulatory readiness, helping advance promising therapies from bench to clinic.
Key Responsibilities
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Strategic Leadership in Biophysical Characterization
- Lead biophysical characterization strategies for protein-based therapeutics (enzymes, antibodies, fusion proteins) and, as appropriate, other modalities such as nanoparticles and/or small molecules.
- Apply bioconjugation chemistry expertise to optimize critical product attributes such as half-life, specificity, and developability.
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Assay Development & Innovation
- Develop, optimize, and validate fit-for-purpose and high-throughput assays to assess higher-order structure, aggregation, stability, and binding interactions.
- For bioconjugates, evaluate conjugation efficiency, site occupancy, DAR/DPR, linker/payload stability, degradation profiles, and serum/matrix stability.
- Deliver well-documented, phase-appropriate analytical packages suitable for internal or CRO execution (development qualification transfer).
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Cross-Functional Collaboration
- Partner with Discovery, Therapeutic Development, Analytical Sciences, Protein Engineering, Formulation, and Regulatory teams to integrate biophysical insights and support decision-making at key development milestones.
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Technology Transfer & External Partnerships
- Lead technology transfer of assays and workflows to Analytical Sciences or external partners (CROs/CDMOs), ensuring SOP completeness, acceptance criteria, comparability plans, and data integrity standards.
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Scientific Innovation & External Engagement
- Stay current on bioconjugation and analytical biophysics innovations (e.g., mass photometry, HDX-MS, native/denaturing MS for DAR and site occupancy, FcRn assays).
- Evaluate and implement emerging platforms to strengthen data quality and reduce program risk.
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Regulatory Support
- Prepare analytical reports and datasets supporting IND/CTA submissions.
- Contribute to comparability assessments and respond to health authority queries in collaboration with CMC and Quality.
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Mentorship & Culture Building
- Act as a player-coach, mentoring junior scientists, maintaining high data integrity standards, and promoting a culture of excellence, innovation, and accountability.
Qualifications
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Education:
- Ph.D. in Biophysics, Biochemistry, Pharmaceutical Sciences, or Chemical/Biomedical Engineering preferred.
- M.S. or B.S. with significant industry experience will be considered.
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Experience:
- Ph.D. with 6+ years, M.S. with 10+ years, or B.S. with 12+ years of relevant experience in biophysical and analytical characterization of biologics.
- Proven success with therapeutic protein conjugates (enzymes, antibodies, fusion proteins). Experience with small-molecule or nanoparticle conjugates is an advantage.
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Technical Expertise:
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Regulatory & CMC:
- Experience contributing to IND/CTA filings and supporting method lifecycle management for complex biologics and conjugates.
Core Competencies
- Strong experimental design, quantitative analysis, and problem-solving skills
- Clear written and verbal communication
- Ability to lead and collaborate within cross-functional, matrixed teams
- Experience managing CRO/CDMO deliverables
Preferred Qualifications
- Experience establishing release and stability testing panels for biologics or conjugates
- Demonstrated success transferring analytical methods to/from CROs/CDMOs, including full documentation and comparability packages
- Familiarity with regulatory submissions and agency interactions for bioconjugates or ADCs
- Evidence of scientific innovation, such as peer-reviewed publications, patents, or conference presentations
Note: This description is not intended to be all-inclusive, or a limitation of the duties of the position. It is intended to describe the general nature of the job that may include other duties as assumed or assigned.
Equal Opportunity Employer/Veterans/Disabled
An Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability. The salary range for this position is: $128,000 to $176,000. BioMarin considers a variety of factors when determining base compensation, including experience, qualifications, and geographic location. These considerations mean actual compensation will vary. This position may also be eligible for a discretionary annual bonus, discretionary stock-based long-term incentives (eligibility may vary based on role), paid time off, and a benefits package. Benefits include company-sponsored medical, dental, vision, and life insurance plans.
For additional benefits information, visit: https://careers.biomarin.com/benefits.
- Eligible employees may participate in benefit plans, subject to the terms and conditions of the applicable plans.
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BioMarin Pharmaceutical Inc.
life insurance, paid time off
Oct 11, 2025