Sigma Defense is seeking a Senior Mechanical Engineer for their Huntsville, AL location. This role focuses on supporting Army electronic warfare systems, requiring 10+ years of experience in mechanical engineering and electro-mechanical systems development. The position involves leading machinist teams, working with SolidWorks, and requires a TS/SCI security clearance. The role offers comprehensive benefits including healthcare, 401k, and educational assistance. This is an excellent opportunity for experienced engineers, especially those with military background, to work on critical defense systems in a collaborative environment.