Seeking a dedicated Mechanical Assembler I for onsite work in Lenexa, KS, to assemble high-pressure oxygen cylinders in a large-scale manufacturing environment. Responsibilities include precision assembly using hand tools, measuring and inspecting parts, following blueprints, adjusting equipment, conducting tests, and ensuring compliance with safety and quality standards. The role requires a high school diploma or equivalent, U.S. citizenship, and preferably prior manufacturing experience. The position offers competitive benefits such as health insurance, paid time off, retirement plans, tuition reimbursement, and wellness programs. Work hours are 2:30 pm to 1:00 am on the 2nd shift. Candidates must be able to lift up to 25 lbs and work standing for extended periods. This opportunity is ideal for individuals passionate about precision, safety, and innovation in aerospace manufacturing.