Position Summary: The Senior Software Engineer will develop information systems by studying operations, designing, developing, and installing software solutions for the novel Mevion Proton Therapy Systems. Essential Functions: Responsibilities will include various system engineering activities to develop software for Mevion's S250-Series Proton Therapy Systems including, but not limited to: Design, development, integration and testing of various tasks in support of the software development effort. Working with engineers from the various project teams in order to develop software. Working with quality engineering to develop test plans. Creating and updating design documentation. Ability to prioritize well, communicate clearly, have a consistent track record of delivery and have excellent software engineering skills. Creative engineering balanced with high quality and a customer focus. Must be able to work across multiple facets of the project and juggle multiple responsibilities at the same time. Strong analytic capability and the ability to create innovative solutions.