Associate Principal Writer, CMC Technical Writing

About PTC Therapeutics

PTC Therapeutics is a global commercial biopharmaceutical company. For over 25 years our team has been deeply committed to a unified purpose: Extending life’s moments for children and adults living with a rare disease.

At PTC, we cultivate an inclusive culture where everyone feels valued, respected, and empowered. We welcome candidates from all backgrounds to join our team, fostering a strong sense of belonging.

Job Description Summary

The Associate Principal Writer for CMC Technical Writing at PTC Therapeutics (PTC) provides CMC technical knowledge and expertise for Chemistry, Manufacturing, and Control (CMC) regulatory document submissions to global health authorities. Responsibilities include authoring, editing, content verification, and providing input to CMC-related documents required for regulatory submissions. The incumbent will collaborate closely with Regulatory CMC Leads, as well as cross-functionally with PTC internal departments and external partners, on CMC technical writing related issues. Additionally, the Associate Principal Writer of CMC Technical Writing will contribute to the development of CMC-related documents in accordance with all applicable regulations including current Good Manufacturing Practices (cGMPs), applicable regulatory guidance documents (e.g., 21 CFR Parts 312 and 314, European Medicines Association [EMA] Clinical Trials Directives, International Congress on Harmonisation [ICH] guidelines), and company Standard Operating Procedures (SOPs) and internal style guides, as appropriate.

Responsibilities

• Leads analysis and interpretation of CMC-related technical data (from SOPs, Batch Records, Reports, etc.) to author CMC dossier content for clinical trial applications (e.g., IND/IMPDs), marketing applications (e.g., NDA/BLA/MAAs), and other documents needed to support regulatory interactions and health authority filings for small molecules and/or biologics.
• Performs editorial review of documents prepared by other team members for completeness, accuracy, consistency, structure, and grammar.
• Coordinates authoring and review activities with Regulatory CMC leads, Pharmaceutical Development/Technical Operations, and Quality Assurance Teams to reach regulatory alignment and to meet deadlines for health authority submissions.
• Participates in key cross-functional meetings to align on general strategy for content and authoring of documents.
• Works closely with Global Regulatory Affairs (GRA) to establish priorities and ensure successful completion of CMC-related authoring activities, including timely handover of intended submission content to the Regulatory Operations Team.
• Ensures key persuasive messaging is clear and consistent within and across documents.
• Ensures consistent document presentation style to maintain quality, ease of review, and adherence to company standards.
• Exhibits required attention to detail, including fact checking, logic flow, parallelism, formatting, and document structure.
• Contributes to the development and standardization of templates and submission related processes.
• As needed, assists in day-to-day operational activities and other assignments specified by management.

Qualifications

• Education: Advanced degree (PhD, PharmD, or MS) with 5+ years in pharma/biotech industry with at least 3 years for regulatory CMC writing experience in pharmaceutical industry OR Bachelor’s degree in a scientific discipline with 7+ years of experience in a pharmaceutical, biotechnology, or CROs.
• Experience: Demonstrated experience in a CMC writing role, including participation in investigational, initial and/or post-approval submissions to the US FDA (IND, NDA, BLA) and/or EMA (IMPD, MAA).
• Knowledge: Broad knowledge of ICH, EMA, and FDA guidance beyond those pertaining to specific regulatory documents.
• Skills: Excellent attention to detail, including fact checking, logic flow, parallelism, formatting, and document structure.