Subtractive Manufacturing Engineering Co-Op - Spring 2027

The role

This co-op role involves performing CNC programming, fixture design, and process documentation. You will work in a precision manufacturing environment with 3-, 4-, and 5-axis machining.

What you will do

• Assist with the creation, simulation, and verification of CNC programs for 3-, 4-, and 5-axis milling and turning centers.
• Support machine setups, prove-out runs, and first-article validation.
• Operate CNC machinery to support prototype and production work.
• Support the design and fabrication of workholding and fixturing solutions.
• Document machining processes, tooling lists, and setup sheets.
• Develop written work instructions.
• Identify and implement at least one continuous improvement opportunity.
• Participate in root cause analysis and corrective action activities.
• Contribute to improvement projects related to machine utilization, process capability, and 5S.
• Support other departments such as Quality, Additive Manufacturing, and Assembly.

Required qualifications

• Currently enrolled in an accredited bachelor's degree program in Mechanical Engineering, Manufacturing Engineering, Industrial Engineering, or a related discipline.
• Basic exposure to machining principles and subtractive manufacturing concepts through coursework, lab work, or prior experience.
• Ability to read and interpret engineering drawings, including a foundational understanding of GD&T.
• Regularly operates a computer workstation.
• Regularly stands, walks, and works on the manufacturing floor.
• Works in an active manufacturing environment subject to noise, vibration, metal chips, cutting fluids, and industrial equipment.
• Required to wear personal protective equipment (PPE) at all times on the shop floor, including safety glasses, hearing protection, and steel-toed footwear.
• Occasionally lifts and carries tooling, fixturing, or materials weighing up to 25 lbs.
• Visual acuity required to read engineering drawings, inspect parts, and verify setup and process documentation.

Nice to have

• Completion of foundational coursework in manufacturing processes, materials, or engineering design
• Exposure to CAM software such as hyperMILL, ESPRIT, Fusion 360, or similar platforms
• Exposure to CAD software such as Fusion 360, SolidWorks, or similar
• Basic understanding of G-code and CNC machine setup fundamentals
• Experience operating CNC mills or lathes, with familiarity with Heidenhain, Okuma, or Haas CNC controllers
• Exposure to Lean Manufacturing or Six Sigma principles through coursework or prior experience

Before you apply

• Candidates must be local the Boston, MA area for consideration.
• To conform to US Government export regulations, 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 requir

About the company

Rennscot MFG is a provider of advanced manufacturing services located in Woburn, MA. They offer services including reverse engineering, metal & polymer additive manufacturing, and precision machining.