Hermeus is a venture-backed defense aviation company reclaiming the lost art of rapid iterative prototyping to build the fastest aircraft in the world today. By prioritizing relentless hardware iteration, we deliver high-speed systems at the pace of the modern battlefield. We work with the Department of War to provide the high-speed capabilities our nation and its allies need to maintain a durable, asymmetric advantage. About the Role: We are seeking a proactive and detail-oriented Mission Manager to support the successful expansion at our next-generation airbreathing propulsion test facility, HEAT, located in Jacksonville, FL. This role will work closely with the Chief Engineer and cross-functional teams to ensure the program milestones and deliverables are delivered on time, within budget, and in alignment with technical, operational, and stakeholder requirements. The Mission Manager will serve as the main customer interface and contract deliverable owner, managing the day-to-day execution of the contract, milestones, deliverables, and customer stakeholder communication. This is a pivotal role that requires both strategic foresight and tactical execution in a highly technical, high-stakes environment.