Principal Analytical QA Specialist, Drug Substance

About Loyal Loyal is a clinical-stage veterinary medicine company developing longevity drugs for dogs. Our mission is to help dogs live longer, healthier lives. We're pioneering a new category of veterinary prescription drugs that proactively and preventatively target the underlying drivers of aging, delaying the onset of disease and preserving quality of life as dogs age. We've already made significant progress in our mission to develop the first FDA-approved drugs to extend canine lifespan: as of early 2026 we've completed two of three major FDA review sections for our lead program, LOY-002, and are targeting submission of the third and final section later this year. Loyal is a well-funded startup with teams of scientists, veterinarians, engineers, operators, and creatives. You'll help us continue on our path of earning FDA approval for the first lifespan extension medicine for any species, and change what's possible for the dogs we love. About the role We’re seeking an experienced Principal Analytical QA Specialist, Drug Substance to provide Quality Assurance oversight of GMP manufacturing, release, stability, validation, and lifecycle management activities supporting the development and commercialization of Loyal's veterinary pharmaceutical products. Operating within Loyal's fully outsourced manufacturing network, the position supports batch disposition of active pharmaceutical ingredient (API) / drug substance, drug product, packaging and labeling through review and approval of protocols, reports, analytical methods, and associated GMP documentation. The role works collaboratively with Technical Operations and Analytical Development / Quality Control to ensure that the manufacture and laboratory analysis of drug substance, drug product, packaging & labeling of finished drug product conforms with cGMPs, VICH and global regulatory requirements. This position also partners with CMC Regulatory Affairs to ensure the translational accuracy and integrity of data incorporated into Module 3 sections of CTD regulatory submissions and written responses to regulatory authorities. Your daily work will include Manufacturing & Analytical Quality Oversight Oversee all aspects of drug manufacture and testing through clinical development and into commercial phase. Provide Quality oversight for analytical method development, qualification, validation, transfer, release testing, and stability programs supporting drug substance and drug product development. Support establishment of phase-appropriate specifications, stability-indicating methods, and control strategies aligned with regulatory expectations. Review and approve validation protocols, raw data, and reports (for test method, process, cleaning, etc.). Batch Release / Disposition & Quality Systems Manage the batch release program by reviewing executed documentation, raw data, quality events (change controls, deviations, CAPAs, OOS/OOT investigations, risk assessments) and product disposition decisions. Review and approve master and executed batch records, analytical raw data, stability protocols, reports and data, and other documents to enable drug substance and final drug product release and on-going evaluation ensuring batches are compliant with cGMP requirements. Lead or support quality event resolution investigations (e.g., OOS/OOT results, deviations), ensuring root cause analysis, CAPA development, and timely closure. Support inspection readiness, audit programs, risk management, quality metrics reporting, Annual Product Review (APR) and product quality processes, Field Alert Report (FAR), product withdrawal, and product recall process. Regulatory & Cross-Functional Support Perform data integrity and compliance assessments including review against source documentation for regulatory submissions. Maintain effective communication with Contract Development and Manufacturing Organizations (CDMOs) and Contract Testing Laboratories (CTLs) to ensure Quality objectives are achieved in a…