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Assoc Prin. Scientist, Analytical R&D

Job in Rahway, Union County, New Jersey, 07065, USA
Listing for: Merck & Co.
Full Time position
Listed on 2026-06-30
Job specializations:
  • Research/Development
    Pharmaceutical Science/ Research, Drug Discovery, Research Scientist
Salary/Wage Range or Industry Benchmark: 142400 - 224100 USD Yearly USD 142400.00 224100.00 YEAR
Job Description & How to Apply Below

Job Description

The Materials & Biophysical Characterization (MBC) group within Pharmaceutical Analysis & Digital Technologies seeks a highly motivated Pharmaceutical Materials Scientist to contribute to the company’s pipeline from discovery through development and commercial launch. The role involves physicochemical characterization of pharmaceutical materials, including small molecule active pharmaceutical ingredients (API), chemical intermediates, peptides, novel excipients, drug‑product intermediates, and finished drug products.

Responsibilities

Utilize expertise in physical organic chemistry or materials science in cross‑functional teams to address challenges such as crystallization, polymorph and salt selection, drug‑excipient compatibility, characterization of amorphous solid dispersions, and physical stability of API and drug products. Build a strong internal and external network with academic and regulatory partners. Promote scientific excellence, a compliance mindset, and collaboration with stakeholders across Discovery Chemistry, Process & Analytical Chemistry, Chemical Engineering, and Formulations Sciences.

Education

Requirements
  • Bachelor’s or Master’s degree in Materials Science and Engineering, Chemistry, Chemical Engineering, Pharmaceutical Sciences, or related discipline with a minimum of eight (8) years relevant industrial experience (non‑academic).
  • Ph.D. in the same fields with at least four (4) years relevant industrial experience (non‑academic).
Experience & Skills Required
  • Expertise in materials science or physical chemistry with experience in materials characterization techniques such as X‑ray diffraction, thermal analysis, electron microscopy, vibrational spectroscopy, particle size analysis, or powder property characterization.
  • Strong academic record, including publications in peer‑reviewed journals and presentations at scientific meetings.
  • Self‑motivated, creative, and energetic scientist willing to continually learn and solve complex problems.
  • Strong written and verbal communication skills.
Preferred
  • Active pharmaceutical ingredient (API) polymorph screening and crystallization.
  • Amorphous solid dispersion characterization.
  • Modified release dosage forms.
  • Automation and data science.
  • Late‑stage product development and regulatory documentation / filing.
Desired Skills
  • Analytical Chemistry
  • Analytical Method Development
  • Assay Development
  • Biological Assay Development
  • Cell‑Based Assays
  • Chemical Engineering
  • Chromatographic Techniques
  • Crystallization
  • High Resolution Mass Spectrometry (HRMS)
  • Liquid Chromatography‑Mass Spectrometry (LC‑MS)
  • Mass Spectrometry Analysis
  • Pharmaceutical Sciences
  • Process Analytical Technology (PAT)
  • Protein Analysis
Salary Range

$ – $, based on education, qualifications, experience, and other factors.

Benefits

Comprehensive package including medical, dental, vision, and other insurance benefits for employee and family; retirement benefits including 401(k); paid holidays; vacation; and compassionate and sick days.

Additional Information

Regular employee status; domestic relocation; visa sponsorship available; 10% travel required.

Equal Employment Opportunity

As an Equal Employment Opportunity Employer, we provide equal opportunities to all employees and applicants for employment and prohibit discrimination on the basis of race, color, age, religion, sex, sexual orientation, gender identity, national origin, protected veteran status, disability status, or other applicable legally protected characteristics. As a federal contractor, we comply with all affirmative action requirements for protected veterans and individuals with disabilities.

For more information about personal rights under the U.S. Equal Opportunity Employment laws, visit EEOC Know Your Rights and EEOC GINA Supplement. Learn more about your rights, including under California, Colorado, and other U.S. state acts.

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