Principal Scientist I: Process Development & Scale-Up Chemist

Parexel; Montpelier (VT); On-site; USD 110,000 - 160,000; Full time

Job summary

Parexel FSP is seeking a Principal Scientist I for a full-time assignment onsite at a client site in Rahway, NJ. The role focuses on chemical process development and scale-up in the pharma/biopharma space, with a strong emphasis on safety, quality, and regulatory compliance.

The ideal candidate will lead lab-based R&D, perform reactions, extractions, crystallizations, and drying steps, and generate clear, GLP-compliant reports while collaborating with cross-functional teams to advance APIs

Qualifications

• PhD in Chemistry or related field or MS with 3+ years pharma/biopharma experience.
• Demonstrated experience with chemical process development, scale-up and unit operations.
• Strong lab skills, safe handling of chemicals, data generation, analysis and GLP compliance.
• Ability to work in a fast-paced, regulated lab with minimal supervision.

Responsibilities

• Develop and optimize chemical processes, including reactions, extractions, distillations, crystallizations, filtrations and drying.
• Perform lab experiments and document results in clear, concise reports.
• Support scale-up planning from bench to kilo-lab scales and troubleshoot issues.
• Collaborate with cross-functional teams to advance APIs through development stages.

Skills

Process development

Scale-up

Laboratory safety

Data analysis

GLP knowledge

Cross-functional collaboration

Documentation

Chemistry theory

Education

PhD in Chemistry or closely related field (Biochemistry, Analytical Chemistry, Research Sciences, Material Sciences, etc.)

MS degree in Chemistry or a closely related field with 3+ years pharma/biopharma experience

Tools

MS Office

Mettler Toledo EasyMax/Optimax

Analytical instruments (HPLC, GC, FTIR, Raman)

Job description

Parexel FSP is seeking a Principal Scientist I for a full-time assignment onsite at a client site in Rahway, NJ. The role focuses on chemical process development and scale-up in the pharma/biopharma space, with a strong emphasis on safety, quality, and regulatory compliance.

The ideal candidate will lead lab-based R&D, perform reactions, extractions, crystallizations, and drying steps, and generate clear, GLP-compliant reports while collaborating with cross-functional teams to advance APIs