Sr. Director, Clinical and Regulatory Writing

About the Position This role can be remote, hybrid or based in our Philadelphia, PA headquarters. The Senior Director, Clinical and Regulatory Writing will serve as a strategic leader within the Clinical, Medical and Regulatory organization, overseeing the development and delivery of high-quality regulatory and clinical documentation to support global regulatory submissions across the cell and gene therapy portfolio. This role partners cross-functionally with Regulatory, Quality, Clinical, Nonclinical, CMC, and external collaborators to ensure clear, compliant, and scientifically sound communication with regulatory agencies and other stakeholders. The Senior Director will lead a small team and be a key contributor to global regulatory strategy, content planning and drafting for regulatory designations, clinical updates and clinical modules of the BLA/MAA. Responsibilities Include • Lead the clinical writing function in the development, review, and approval of regulatory documents to support global submissions (e.g., INDs, IMPDs, BLAs, MAAs, Orphan Drug Applications, Investigator Brochures, protocols, clinical study documents, PSPS/POIPs, Prime, RMAT) • Lead cross-functional content planning of regulatory submission modules, including data integration and interpretation, and ensuring consistency in strategic messaging for dossiers, meeting packages and responses to health authorities • Translate complex technical data from clinical and biostatistics teams into scientifically accurate, submission-ready documentation • Manage external consultants and contractors as needed to support Cabaletta submissions reviews, authoring, if needed, and gap analyses • Mentor, train, and manage a team of medical/regulatory/technical writers or cross-functional contributors in document development • Develop and implement strategic plans for medical writing activities, aligning them with clinical development, regulatory affairs, and overall business goals • Drive process improvements and develop standard practices for efficient, compliant and high-quality document delivery • Collaborate with Clinical Operations and external CROs to ensure inspection readiness of clinical trial documentation, including informed consents, study manuals, and IRB/IBC responses Required Qualifications • Advanced degree in life sciences (M.D., or PharmD preferred); MS, PhD with significant clinical pharmacology writing experience will be considered • 12+ years of progressive experience in regulatory or scientific/medical writing in the biopharmaceutical industry, including 5+ years in a leadership role • Demonstrated experience developing content for major global regulatory submissions (e.g., IND, BLA, MAA), preferably in cell or gene therapy • Strong understanding of drug development processes, regulatory frameworks (FDA, EMA, ICH), and clinical trial documentation requirements • Exceptional writing, editing, and analytical skills with the ability to convey complex scientific data clearly and persuasively • Proven leadership capabilities, including team development, cross-functional collaboration, and vendor management • Proficiency in Microsoft Office Suite, document management systems (e.g., Veeva Vault), and electronic publishing tools • Strong project management skills with the ability to prioritize competing demands in a fast-paced, deadline-driven environment • Collaborative mindset with the ability to influence and guide stakeholders across disciplines and levels of seniority • Strong team orientation and passion for continuous self-development • Experience in the biotech industry or in a startup industrial setting is preferred How to Apply Please click the link at the bottom of the posting to submit an application. Benefits Our most important asset is our people and we offer competitive benefits including health and retirement, PTO, and stock option plans. Equal Opportunity Employer Cabaletta Bio is an equal opportunity employer. We do not discriminate on the basis of race, color, gender, gender identity, sexual orientation, age, religion, national or ethnic origin, disability, protected veteran status or any other basis protected by applicable law. Apply tot his job Apply To this Job