Assembly Engineering Co-op - Summer 2026

About This Role

Want to see your engineering skills come to life? As an Assembly Engineering Co-op at Rennscot MFG, you'll be the person who brings precision components together into finished products that matter. This isn't about watching from the sidelines—you'll operate laser equipment, design custom fixtures, and execute assembly processes that directly impact our customers. Get hands-on experience across the entire assembly workflow while building skills that will set you apart in your engineering career.

What You'll Do

• Master the Tools of the Trade

• Operate laser markers and cutters, power tools, forklifts, and other machinery with increasing independence

• Use precision equipment to execute assembly tasks including pin installation, threaded insert installation, part marking, and finish application

• Follow work instructions to the letter and ensure every product meets customer requirements

• Design and Build What You Need

• Create fixtures, tooling, and supporting equipment that make assembly processes better

• Develop detailed process plans that actually work on the shop floor

• Drive process improvements that increase efficiency and quality

• Ensure Excellence at Every Step

• Inspect and measure in-process and finished products to maintain our high standards

• Document your work accurately and maintain meticulous time tracking records

• Follow our Quality Manual, procedures, and training requirements

• Keep Things Running Smoothly

• Maintain a clean, organized workspace that meets our high standards

• Make deliveries and pickups from vendors and local suppliers as needed

• Package finished products with care and attention to detail

What We're Looking For

• You've Got the Foundation

• Enrolled in Mechanical Engineering, Manufacturing Engineering, or a related program

• Strong mechanical aptitude and hands-on skills

• Solid math and logical reasoning abilities

• Detail-focused with a results-driven mindset

• Comfortable using computers for reading documents and modifying files

• Familiar with basic shop and hand tools

• Ability to stand for extended periods and lift up to 60 pounds

• Bonus Points If You Have

• Experience with metrology tools like calipers and micrometers

• Worked in a manufacturing environment or machine shop

• Automotive mechanic experience or similar hands-on background

• Can read and interpret mechanical drawings

• Understanding of subtractive manufacturing processes

• Designed fixtures or jigs for assembly or fabrication

Who You Are

• Mechanically minded – You love understanding how things work and fit together

• Hands-on – You'd rather be on the shop floor than stuck behind a desk all day

• Self-sufficient – Once you learn something, you run with it

• Detail-obsessed – You know that small mistakes in assembly can lead to big problems

• Solution-oriented – When something doesn't work, you figure out how to make it better

• Safety-conscious – You take equipment operation and workplace safety seriously

• Organized – You keep your workspace clean and your documentation accurate

• Versatile – You're ready to learn new skills and take on whatever the day brings

• Team player – You collaborate well and help wherever you're needed most

Physical Requirements

• Ability to move safely throughout a manufacturing environment, including shop floor, warehouse, and loading areas, working safely in industrial environments with noise, dust, fumes, and chemicals.

• Ability to maintain stationary positions (seated or standing) for prolonged periods and to stand, walk, and perform hands-on material handling for extended periods as needed.

• Ability to lift, carry, and move materials or boxes up to 60 lbs with the assistance of another team member.

• Ability to operate pallet jacks, carts, or similar material-handling equipment after training.

• Ability to wear all required PPE—including respirators—for long durations..

About Rennscot MFG

Rennscot MFG, founded in 2017, started as a motorsports-focused shop in the aftermarket automotive industry. Now, they are a leading provider of advanced manufacturing services located in Woburn, MA. Rennscot MFG strives to be more than just a machine shop; they solve problems in innovative ways, using a suite of integrated services to fuel a passion for ideation. With a focus on diversifying into commercial and critical technology sectors, Rennscot MFG delivers cutting-edge technologies and unwavering commitment to quality. They offer a comprehensive range of services, including reverse engineering, metal & polymer additive manufacturing, and precision machining to support various industries’ needs. For more information, visit rennscotmfg.com.

ITAR Requirement

To conform to US Government export regulations, including the International Traffic in Arms Regulations (ITAR) you must be a US citizen, lawful permanent resident of the US, protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the US Department of State. Learn more about the ITAR here: https://www.pmddtc.state.gov/ddtc_public/ddtc_public?id=ddtc_public_portal_itar_landing.

EEO Statement

Rennscot MFG is an Equal Opportunity Employer; employment with Rennscot MFG is governed on the basis of merit, competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status.

It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.