Modern Technology Solutions, Inc. (MTSI) is seeking a motivated Associate Systems Integrator to support the MSEIT contract at Space Systems Command (SSC) in El Segundo, CA. This position provides critical day-to-day coordination and program management support to the systems engineering and integration (SE&I) and Agile delivery teams. The successful candidate will help organize multi-contractor activities, support software and tool procurement, manage status tracking and communication workflows, and ensure integration awareness across program teams. This role is ideal for someone seeking to grow into systems integration or program management leadership within a high-visibility Department of Defense (DoD) software and systems engineering program. The MILSATCOM Systems Engineering, Integration, and Test (MSEIT) effort provides leading edge Systems Engineering & Integration (SE&I) for the Space Force’s Space Systems Center (SSC). We support the Space Force’s acquisition of state-of-the-art Military Satellite Communications systems, providing global secure, survivable, and protected communications for our nation’s warfighters. We seek technical individuals who will thrive in a highly collaborative work environment of small teams, using the most modern tools and methodologies to tackle the challenges of integrating complex space and ground communications systems.