United Therapeutics is seeking an experienced Senior or Advanced Lung Disease Sales Specialist to join their rare disease commercial team in Anaheim, California. This full-time field-based role focuses on promoting and selling specialized therapies for advanced lung conditions to healthcare providers, pulmonologists, and specialty centers throughout the assigned territory. The position offers a unique opportunity to make a meaningful impact on patients with rare and life-threatening pulmonary diseases while building strong professional relationships within the medical community. Key responsibilities include developing and executing strategic territory sales plans to achieve revenue targets and market share growth for advanced lung disease products. The specialist will conduct educational presentations to healthcare professionals, coordinate with clinical teams to identify appropriate patients, and manage the full sales cycle from lead generation through closing and ongoing account management. Regular travel throughout the Anaheim territory is required to meet with key opinion leaders, attend medical conferences, and support product launches or new indication rollouts. Required qualifications include a bachelor's degree in life sciences, business, or a related field, along with a minimum of five years of pharmaceutical or specialty sales experience, preferably in pulmonology, cardiology, or rare disease therapeutic areas. Candidates must demonstrate a proven track record of meeting or exceeding sales targets, possess strong clinical acumen, and maintain excellent communication and relationship-building skills. Prior experience working with specialty pharmacies, hospital systems, or complex reimbursement pathways is highly valued. Essential skills for success include deep product and disease-state knowledge, strategic account planning abilities, persuasive presentation skills, and proficiency with CRM platforms and sales analytics tools. The ideal candidate will be self-motivated, resilient under pressure, and committed to ethical sales practices while navigating complex healthcare environments. United Therapeutics is a biotechnology company dedicated to developing and commercializing innovative therapies for patients with chronic and life-threatening conditions. The organization fosters a collaborative culture that prioritizes scientific advancement and patient outcomes. Employees enjoy competitive compensation packages including base salary plus uncapped commissions, comprehensive health and retirement benefits, generous paid time off, and ongoing professional development opportunities. Career advancement pathways exist within sales leadership, marketing, and broader commercial operations. The company supports work-life balance and provides resources for continuous learning in the rapidly evolving rare disease landscape.