This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Applications Lead - Defense based in the United States. This is a senior, highly strategic role focused on shaping the future of quantum computing applications across defense and national security. You will translate complex mission needs into high-value opportunities for fault-tolerant quantum systems. Working across business development, applications, algorithms, software, and technical teams, you will help assess feasibility and define pathways from concept to customer impact. The role combines scientific leadership, strategic customer engagement, and project ownership in a fast-moving environment. You will engage with senior government officials, defense organizations, national laboratories, and other influential stakeholders. This is an opportunity to help establish emerging quantum capabilities in one of the most strategically important technology domains.