Software Engineer

Tactical Software Systems Engineer - Counter-UAS Network Communication SystemLocations: Huntsville, AL and Alexandria, VA. Telecommuting may be available.Clearance: Active Secret with the ability to obtain a Top-Secret security clearance.This position is contingent upon contract award.Leidos is seeking a Tactical Software Systems Engineer to develop and modernize software for the Army's Counter-UAS Network Communication System (NCS). You'll build secure, resilient software enabling remote management, cloud integration, and tactical communications for M-LIDS and FS-LIDS systems supporting Short-Range Air Defense (SHORAD) missions.This role spans full-lifecycle engineering—architecture updates, secure comms development, contested-environment cloud integration, remote C2 tooling, integration/test, and cybersecurity support. Your work directly strengthens the Army's ability to detect and defeat low, slow, small UAS threats in degraded and contested environments.Primary ResponsibilitiesAnalyze and upgrade existing C-UAS software architecture.Design/modify tactical software components, interfaces, and data flows.Develop secure communication protocols (encryption, MFA, access control).Build cloud-integrated data collection/transfer software for DIL environments.Create remote command-and-control and monitoring tools (centralized & distributed).Integrate, test, and validate software in simulated contested conditions.Support cybersecurity, RMF/ATO activities, and patch/security updates.Present technical results and maintain system requirements documentation.Basic QualificationsBachelor's in CS, Software/Computer/Electrical Engineering (or equivalent) + 10+ years tactical/embedded software experience.Strong development experience in C, C++, Python, Java.Proven background in complex software architecture design/modification.Experience with secure network comms, encryption, MFA, access control.Experience developing software for DIL/contested cloud environments.Experience with remote C2, monitoring, and configuration software.Current Secret clearance with the ability to obtain a Top Secret security clearance.Knowledge of DoD cybersecurity, secure coding, and RMF/ATO.Strong technical writing and ability to brief Government stakeholders.Preferred QualificationsExperience with C-UAS, SHORAD, LIDS, or similar defense systems.Experience modifying fielded tactical software.Background in DIL cloud/edge architectures and DoD-approved crypto.Experience with ATO packages, DevSecOps, containers, or classified agile development.This position is contingent upon contract award.