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Strong fit if you are a senior synthetic chemist who wants principal-level science leadership inside a CRO/FSP environment supporting pharma and biotech programs in the Denver–Glendale area (on-site, not remote).
As a Principal Scientist III (Synthetic Chemist) on Parexel’s FSP model, you would design and execute synthetic chemistry work that supports client drug programs, guide junior chemists on routes and scale-up decisions, document methods and data for study and regulatory readiness, and coordinate with cross-functional CRO teams so chemistry deliverables align with clinical development timelines.
Strengthen multi-step organic synthesis, purification and analytical interpretation, process-minded scale thinking, clear experimental write-ups, and stakeholder communication across FSP client teams. No specific cert family was provided for this listing.
It is a contract research organization that conducts clinical trials for pharmaceutical and biotechnology clients.
Glendale/Denver, Colorado; the listing is not marked remote.
Functional service provision: embedded scientific support for a client’s development work through Parexel’s model.
Website: parexel.com
Parexel is an American contract research organization. It conducts clinical trials on behalf of its pharmaceutical and biotechnology clients to expedite drug development and clinical trial progress.
Public cache only — not an employee review.
Parexel is seeking a Principal Scientist III – Synthetic Chemist (FSP) to join our team in Glendale, Denver, where you will support a client‑based project in Rahway, New Jersey. About the Role As a full‑time Parexel FSP employee, you will be embedded onsite at a client facility, contributing to advanced process chemistry initiatives that drive drug development programs. The position offers a full benefits package, including health coverage, sick leave, a 401(k) plan, paid holidays, and vacation time, and does not include visa sponsorship. What You'll Do Design and execute synthetic routes for complex small‑molecule intermediates. Optimize reaction conditions to improve yield, purity, and scalability. Prepare detailed experimental records, reports, and regulatory documentation. Collaborate with cross‑functional teams to troubleshoot technical challenges. Maintain laboratory safety standards and ensure compliance with SOPs. Mentor junior scientists and share best practices in synthetic methodology. What We're Looking For Ph.D. in Organic Chemistry, Medicinal Chemistry, or a related field with 5+ years of industry experience. Proven expertise in multi‑step synthesis, purification, and characterization of pharmaceutical compounds. Strong familiarity with modern analytical techniques (NMR, LC‑MS, HPLC). Ability to work effectively in a fast‑paced, client‑focused environment. Excellent communication skills and a track record of delivering results on schedule. Experience with FSP or contractor models is a plus. About Parexel Parexel is a global biopharmaceutical services leader dedicated to accelerating the development and delivery of innovative therapies. Our Functional Service Provider (FSP) model offers specialized scientific talent to clients while providing employees with diverse project exposure and career growth opportunities. How to Apply To apply, complete your application directly on this page, or you'll be redirected to the employer's application platform to finish submitting there.
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