Engine and Other Machine Assemblers

Workers in this field spend their days building, assembling, and rebuilding complex machinery. This includes equipment like engines and turbines used in construction, textile, paper, and extraction industries. Day-to-day tasks require handling and moving physical objects, controlling machinery, and inspecting equipment or materials to ensure everything is put together correctly. Assemblers must gather information, identify specific parts, and communicate regularly with their supervisors and peers to keep operations running smoothly.

Success in this role requires a strong realistic interest, meaning a preference for hands-on, practical work. Key skills include operations monitoring, quality control analysis, and equipment maintenance. Workers need to read instructions carefully, think critically, and solve complex problems when parts do not fit. Having a solid foundation in mechanics, production processes, and engineering technology is highly beneficial. Because precision is critical when building heavy machinery, assemblers must show strong attention to detail, dependability, and cautiousness. They must also maintain self-control and cooperation while working in busy production environments.

Entering this career typically requires a high school diploma. Most workers prepare for the job through some on-the-job training or prior experience, as the occupation is classified under O*NET Job Zone 2. This means that while some preparation is necessary, extensive academic training is not usually required before starting work.

For those looking to build a stronger foundation before entering the workforce, certain college majors can be highly beneficial. Programs in vehicle maintenance and repair technologies or technician programs align well with this career path. These educational programs help students develop the mechanical and technical knowledge needed to handle complex engine assembly. There are no specific licenses, certifications, or professional associations listed as mandatory for this occupation, meaning most training happens directly on the shop floor under the guidance of experienced supervisors and peers.

In 2025, the median annual pay for engine and other machine assemblers was $53,710. Earnings can vary based on experience and location, with the lowest 10 percent of workers earning less than $38,500, while the highest 10 percent earn more than $77,750.

There are currently 34,000 people employed in this occupation. Between 2025 and 2035, employment is projected to decline by -17%. Despite this projected decrease in total jobs, there are still an estimated 2,100 job openings projected each year to replace workers who leave the occupation.