Senior Scientist

Position: Senior Scientist I

Hourly Range: $85,000 - $95,000

Location: Exton, PA (On-site)

Pharmaron is a global contract research and manufacturing organization (CRO/CDMO) helping pharma and biotech companies bring new therapies to life. With over 25,000 employees worldwide across 28 locations in the US, UK, China, and Singapore, we support drug discovery through to manufacturing with fully integrated high-quality services.

We're proud of the impact we make and just last year, we supported 887 discovery projects
, 1,100+ CMC programs
, and 1,397 clinical trials across all phases. Our teams are involved in everything from small molecules, ADC's, biologics, and gene therapies and we work with more than 3,300 global customers
. To learn more, visit

As a Senior Scientist I, you will serve as a scientific leader supporting critical drug development programs through the design, execution, and interpretation of regulated bioanalytical and drug-drug interaction (DDI) studies. You will collaborate directly with sponsors, influence study strategy, solve complex scientific challenges, and help bring innovative therapies closer to patients.

• Design and lead regulated DMPK and DDI bioanalytical studies that support client drug development programs.
• Develop, optimize, validate, and execute LC-MS/MS and HPLC analytical methods.
• Serve as Study Director (SD) and Principal Investigator (PI) for assigned studies.
• Interpret complex bioanalytical data and provide scientific recommendations to internal and external stakeholders.
• Author and review protocols, study reports, technical summaries, and regulatory documentation.
• Troubleshoot analytical challenges and drive scientifically sound solutions.
• Collaborate with cross-functional teams including Scientists, Operations, Quality Assurance, Business Development, and clients.
• Mentor junior scientists and contribute to the growth of laboratory capabilities and scientific excellence.
• Serve as a scientific partner to sponsors by providing study updates, discussing results, and helping design solutions that meet program objectives.

• Bachelor's degree in Pharmaceutical Sciences, Life Sciences, Chemistry, Biochemistry, or a related discipline.
• 5+ years of GLP and/or bioanalytical laboratory experience.
• 3+ years of hands‑on LC-MS/MS experience utilizing Sciex, Waters, or similar platforms.
• Experience supporting DMPK and Drug-Drug Interaction (DDI) studies.
• Experience authoring protocols, reports, and technical documentation.
• Strong data interpretation, problem-solving, and troubleshooting abilities.

Pharmaron is a premier service provider for the life sciences industry. Founded in 2004, Pharmaron has invested in its people and facilities and established a broad spectrum of research, development, and manufacturing service capabilities throughout the entire drug discovery, preclinical, and clinical development process across multiple therapeutic modalities, including small molecules, biologics, and CGT products. With over 25,000 employees and operations in the US, UK, China, and Singapore.

Pharmaron has an excellent track record in delivering R&D solutions to its partners in North America, Europe, Japan, and China.

You will thrive in our inclusive and collaborative environment, where teamwork and innovation go hand in hand. Here, your voice matters, and your contributions make a real impact. "Employees Number One" and "Clients Centered" are the core cultural values  culture, which sets Pharmaron apart from other organizations, has evolved from our deep commitment to our employees, partners, and collaborators.

As part of our commitment to your well-being, we offer a…