Director, Regulatory CMC

Company Overview Rhythm is a global, commercial-stage biopharmaceutical company committed to transforming the lives of patients living with rare neuroendocrine diseases. We develop medicines for previously untreatable or undertreated diseases. We recognize the courage it takes for patients and their caregivers to begin their journey of advocacy to find the answers they need. Their courage inspires us to challenge convention, ask bold questions and seek answers for them. Every day, we strive for excellence through our willingness to adapt, learn, and our tenacity to overcome barriers, together.

Overview This role is responsible for executing high-quality, science-based, and compliant regulatory CMC deliverables for assigned program(s), in alignment with strategies established by Global Regulatory Affairs and Technical Operations. T his individual contributor role will execute regulatory CMC plans and support implementation of filing strategies for assigned programs. As part of the growing and dynamic regulatory affairs team, this role is accountable for the effective management and timely delivery of CMC regulatory documents, coordination of cross-functional inputs, and support of regulatory CMC execution activities across development, commercialization, and lifecycle management. The role will work closely with Global Regulatory Affairs, Technical Operations, Quality, and other internal stakeholders to ensure deliverables are aligned, complete, and compliant with global regulatory requirements and commitments. Responsibilities and Duties Serve as the regulatory CMC representative on cross-functional teams for assigned programs and execute deliverables in alignment with strategies established by Global Regulatory Affairs and Technical Operations. Author, compile, review, and finalize high-quality CMC regulatory documents and submissions, including core dossiers, INDs, IMPDs, MAAs, BLAs, variations, and annual reports, in collaboration with internal and external stakeholders. Coordinate and support the timely execution of regulatory filings and submission activities in compliance with applicable global regulatory requirements, commitments, and internal timelines. Prepare regulatory CMC meeting requests, briefing materials, and supporting documentation to enable effective health authority interactions and internal governance reviews. Assess CMC change controls to determine regulatory impact, identify filing requirements across regions, evaluate supporting documentation, and escalate risks or gaps as appropriate. Track regulatory commitments, health authority questions, and submission-related action items, and coordinate cross-functional responses within agreed timelines. Maintain current knowledge of relevant CMC regulations, guidance, and regional expectations, and communicate executional impact to internal stakeholders. Contribute to continuous improvement of regulatory processes, templates, SOPs, and systems that support efficient and compliant document development and submission execution. Qualifications and Skills A minimum of a B.S. degree in a scientific or life sciences discipline with a minimum of 10 years experience in Regulatory CMC, manufacturing, analytical development, quality, or related pharmaceutical development environments. Demonstrated experience supporting regulatory programs for products intended to treat rare diseases and/or conditions with high unmet medical need is preferred. Experience preparing CMC documentation to support clinical trial applications, marketing applications, post-approval submissions, and health authority responses. Experience with peptides and injectable dosage forms and/or injection drug delivery devices is required. Strong execution skills with demonstrated ability to manage multiple deliverables, coordinate cross-functional input, and deliver high-quality work within aggressive timelines. Working knowledge of global CMC regulatory requirements, guidelines, and