Manage the planning, design, and maintenance of semiconductor facility systems, including HVAC, cleanrooms, deionized water treatment, hazardous gas distribution, compressed air, process cooling water, industrial waste treatment, exhaust abatement, electrical systems, and other critical infrastructure. Active and existing security clearance required after day 1 At RTX, the world's largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world’s most complex problems.