Principal Scientist, Process Chemistry

praxisprecisionmedicines

United States - Remote · Remote · United States

Posted Dec 22, 2025

Other
CMC

Job description

Location: This position may be performed remotely, but requires the flexibility and willingness to travel as needed.

The Opportunity

We’re seeking a Principal Scientist in Process Chemistry to lead drug substance activities for one or more projects within Praxis’ portfolio to support clinical and commercial supply. Apply your knowledge to design products & processes to support clinical phase testing and then mature them through development to commercial supply. You are a key leader in the development of drug substance processes for our small molecule products. You’ll also work closely within the CMC and project teams under Agile management to identify requirements and constraints of our product in order to define a work plan that will lead to the successful manufacturing and creation of a data package to support commercial regulatory submissions.

Primary Responsibilities

Leads the Process Chemistry Research and Development for one or more projects from early to late phase within Praxis.
Designs both early phase and late-phase/commercial drug substance process and then leads their demonstration from lab to pilot plant.
Provides chemistry and technical leadership throughout the lifecycle
Participates/leads activities to identify final API forms for pharmaceutical development.
Working closely with formulations, analytical, operations, engineering and quality, expectation to be integrated into the overall CMC team responsible for delivery of clinical and commercial drug substance to Praxis programs.
Identify, collaborate and lead external CRO, and CDMO organization(s) to achieve deliverables.
Analyze external experimental data to drive synthetic experimental plans at CROs and CDMO.
Authoring or co-authoring of regulatory submissions.
Define manufacturing strategy and execution, including GMP requirements and issue resolution.
Assessment and application of new trends and concerns in process development, quality and manufacturing to Praxis’ products.
Manage quarterly budgeting of drug substance relevant activities.
Contributor to inventions which add value to Praxis and its patients while strengthening our intellectual property position.

Qualifications and Key Success Factors

Advanced degree or commensurate experience equivalent in Organic Chemistry, Pharmaceutical Sciences, Engineering or related discipline.
Minimum of 5+ years of industry experience in CMC specifically for small molecule drug substance.
A scientific track record or working knowledge in continuous processing, catalysis, biocatalysis and/or high throughput experimentation desirable.
Strong knowledge of US and EU cGMP requirements and best practices relating to drug substances and drug products.
Strong knowledge of CMC development across all phases of drug development from initial regulatory filings through registration, validation and launch.
Experience in working with third-party CRO / CMO partners and associated service providers to develop and manufacturing pharmaceutical products.
Experience with salt/crystalline form selection preferred.
Experience with oligonucleotide chemistry is a plus.
Demonstrates a high level of intellectual curiosity, innovation and creative problem solving with an entrepreneurial spirit; can thrive in an agile environment.
Excellent interpersonal and communication skills, with the ability to develop important relationships that include trust and encourage diversity in all its forms.
Highly organized and detail-oriented with a passion to deliver quality results.

Compensation & Benefits

At Praxis, we believe that taking care of our people (and their people) is important, so we provide a world class benefits package to help you thrive.  This includes 99% of the premium paid for medical, dental and vision plans. We also provide company-paid life insurance, AD&D, disability benefits, and voluntary plans to personalize your coverage. Thinking about the future?  We match dollar-for-dollar up to 6% on eligible 401(k) contributions and sweeten the deal with long-term stock incentives and ESPP.  We provide a discretionary quarterly bonus, an extremely flexible wellness benefit, generous PTO, paid holidays and company-wide shutdowns.  Not to mention, you'll also be joining a phenomenal crew of colleagues who are smart, engaged and inspiring.  We aim high, collaborate hard, and produce results.  Let’s achieve the impossible together!

To round out our world-class total rewards package, we provide annualized base salary compensation in the range listed below. Final salary range may be modified commensurate with job level, education, and experience.

Annualized Base Salary

$165,000—$185,000 USD

Company Overview

Praxis Precision Medicines is a clinical-stage biopharmaceutical company translating genetic insights into the development of therapies for central nervous system disorders characterized by neuronal imbalance. At Praxis we share a common vision of reshaping the human condition into a more freeing and fulfilled existence by developing high impact medicines for patients and families affected by and living with complex brain disorders. Our core Values of Trust, Ownership, Curiosity and Results are foundational to every aspect of our business and are exemplified by each and every one of our team members.

Diversity, Equity & Inclusion
Guided by our core values, at Praxis Precision Medicines, Inc. we continue to DARE FOR MORE^® to advance, promote, and champion diversity, equity, and inclusion by encouraging individuals to bring their authentic selves and perspectives to work each day. We are an equal opportunity employer and committed to providing opportunities to all qualified applicants without regard to race, religious creed, color, gender identity or expression, age, national origin, sexual orientation, disability, genetics, military service and veteran status, or any other characteristic protected by federal, state, or local laws.

Attention: Job Scam Alert
Praxis has recently become aware of fraudulent job recruitment postings from individuals claiming to represent Praxis. These postings seek financial information in connection with fraudulent opportunities for employment. If you suspect any fraudulent activity or misrepresentation in connection with a Praxis job opportunity, please report it to careers@praxismedicines.com.

Praxis does not accept unsolicited submissions from recruitment agencies for open positions. We ask all recruitment agencies to refrain from contacting any Praxis employee regarding any position. All unsolicited resumes submitted by recruitment agencies to any Praxis employee in any form or method will be deemed to be the property of Praxis, and Praxis explicitly reserves the right to hire those candidate(s) without any financial obligation to the recruitment agency.