Part-Time Manufacturing Internship
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Sentry
Watertown, SD, US
Summary
Assist in the assembly and production of custom aluminum mobile units, including installing insulation and interior components. Support light electrical wiring and maintain a safe, organized manufacturing work area.
Job Description
Looking for hands-on experience that actually teaches you something?
Sentry is hiring a Part-Time Manufacturing Intern to support our Team Lodge manufacturing team in Watertown. This position offers real-world experience working alongside skilled professionals building custom aluminum mobile ice shacks, home offices, and recreation units.
You'll gain exposure to electrical systems, manufacturing processes, construction methods, insulation installation, aluminum fabrication, and product assembly while helping build high-quality units from the ground up.
This is a great opportunity for students pursuing careers in construction, manufacturing, electrical technology, welding, engineering, or related trades. No previous experience is required. We are willing to train someone who is dependable, willing to learn, and takes pride in their work.
What You'll Do
• Assist with assembly and production of Team Lodge units
• Help install insulation, aluminum paneling, and interior components
• Support light electrical installation and wiring activities
• Operate hand and power tools under supervision
• Read measurements and assist with layout preparation
• Maintain a clean, organized, and safe work area
• Help with quality control inspections and final unit preparation
• Learn manufacturing and construction processes from experienced team members
What We're Looking For
• Currently enrolled in high school, technical school, or college, or interested in pursuing a skilled trades career
• Strong work ethic and willingness to learn
• Positive attitude and dependable attendance
• Ability to work safely in a manufacturing environment
• Comfortable using basic hand and power tools
• Ability to lift up to 50 pounds and perform physical work throughout the day
Preferred Areas of Study
• Construction Management
• Electrical Technology
• Manufacturing Technology
• Welding
• Mechanical Technology
• Engineering
• Building Trades
Why Join Sentry?
At Sentry, you'll gain experience that goes beyond typical internship work. You'll be part of a team that designs, manufactures, and builds products used throughout the Midwest while developing practical skills that can help launch a long-term career.
What We Offer
• Flexible part-time schedule
• Competitive hourly pay
• Hands-on experience with real projects
• Mentorship from experienced tradespeople and manufacturing professionals
• Opportunity for future full-time employment
• Experience across multiple aspects of manufacturing and construction
Our Core Values
Hard Work
Integrity
Optimism
Passion
Ride for the Brand
If you're looking for an opportunity to learn valuable skills, gain real-world experience, and be part of a team that builds quality products, we'd like to hear from you.
Apply today at sentryusa.com/careers
About Sentry
Sentry is a full-service general contractor and design-build firm built to lead projects from concept to completion—with the horsepower to self-perform the trades that matter most.
We’re not just managing construction—we’re doing the work. Our in-house teams deliver full-scope mechanical, electrical, and plumbing (MEP), structural steel erection, crane services, custom fabrication, trucking, field service, and control systems. We also operate our own manufacturing facility to support everything from pre-fab components to specialty builds—giving us the flexibility to move fast and deliver custom solutions for each project.
We started as a one-crane crew with a simple mindset: show up, work hard, and get it done. That approach still defines how we operate today.
Now headquartered in Watertown, South Dakota, with additional offices in Sioux Falls, Pierre, and across North Dakota, our team has grown to over 200 people strong. We support projects across the Midwest, with active work in South Dakota, North Dakota, Minnesota, Iowa, Nebraska, and Wyoming—and the proven ability to support clients across neighboring states and new markets.
Our work spans commercial, industrial, municipal, and infrastructure sectors. From wastewater treatment plants to specialty shop-built systems, we deliver with clarity, accountability, and pride—backed by a team that’s just as capable in the field as they are in preconstruction.
Our growth is driven by our people. We invest in our teams, lead with our values, and take pride in the culture we’ve built—and the people who are building it with us.
Sentry. Flexible. Innovative. Results.
Founded
2011
Company size
201-500 employees
Industry
Software
Org type
Privately Held
Headquarters
San Francisco, California
About Sentry
Sentry is a full-service general contractor and design-build firm built to lead projects from concept to completion—with the horsepower to self-perform the trades that matter most.
We’re not just managing construction—we’re doing the work. Our in-house teams deliver full-scope mechanical, electrical, and plumbing (MEP), structural steel erection, crane services, custom fabrication, trucking, field service, and control systems. We also operate our own manufacturing facility to support everything from pre-fab components to specialty builds—giving us the flexibility to move fast and deliver custom solutions for each project.
We started as a one-crane crew with a simple mindset: show up, work hard, and get it done. That approach still defines how we operate today.
Now headquartered in Watertown, South Dakota, with additional offices in Sioux Falls, Pierre, and across North Dakota, our team has grown to over 200 people strong. We support projects across the Midwest, with active work in South Dakota, North Dakota, Minnesota, Iowa, Nebraska, and Wyoming—and the proven ability to support clients across neighboring states and new markets.
Our work spans commercial, industrial, municipal, and infrastructure sectors. From wastewater treatment plants to specialty shop-built systems, we deliver with clarity, accountability, and pride—backed by a team that’s just as capable in the field as they are in preconstruction.
Our growth is driven by our people. We invest in our teams, lead with our values, and take pride in the culture we’ve built—and the people who are building it with us.
Sentry. Flexible. Innovative. Results.
Founded
2011
Company size
201-500 employees
Industry
Software
Org type
Privately Held
Headquarters
San Francisco, California
