DS2 is seeking a Senior Software Engineer to design and build secure, mission-critical software supporting Army rapid capability programs. In this role, you will lead architecture and development of modern cloud-based services, modeling and simulation tools, and data-driven mission systems for U.S. defense customers. You will collaborate with engineers, analysts, and military stakeholders, drive technical decisions, and mentor teammates. This position offers a collaborative, defense-focused environment with complex challenges, modern tech stacks, and impactful work directly supporting U.S. military operations.