Subtractive Manufacturing Engineering Co-Op - Fall 2026

Rennscot MFG • Woburn, MA

1d • $19 - $24 • Onsite

About The Position

Candidates must be local the Boston, MA area for consideration.
Are you an engineering student who learns best by doing? We are looking for a Subtractive Manufacturing Engineering Co-Op to join our team. This is a hands-on role where you will work directly alongside experienced engineers — not just observing, but actively contributing to real production work, meaningful process improvements, and documentation that the team will use long after your term ends.
You will gain direct exposure to 3-, 4-, and 5-axis machining, CNC programming, fixture design, and quality system requirements in a precision manufacturing environment. If you are curious, mechanically inclined, and ready to roll up your sleeves and make an impact, this co-op is for you.

Requirements

• Currently enrolled in an accredited bachelor's degree program in Mechanical Engineering, Manufacturing Engineering, Industrial Engineering, or a related discipline.
• Completion of foundational coursework in manufacturing processes, materials, or engineering design is preferred.
• 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.
• 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.

Nice To Haves

• Exposure to CAM software such as hyperMILL, ESPRIT, Fusion 360, or similar platforms is preferred.
• Exposure to CAD software such as Fusion 360, SolidWorks, or similar is preferred.
• Basic understanding of G-code and CNC machine setup fundamentals is a plus.
• Experience operating CNC mills or lathes, with familiarity with Heidenhain, Okuma, or Haas CNC controllers, is a strong plus.
• Exposure to Lean Manufacturing or Six Sigma principles through coursework or prior experience is beneficial.

Responsibilities

• Assist with the creation, simulation, and verification of CNC programs for 3-, 4-, and 5-axis milling and turning centers using hyperMILL, ESPRIT, and Fusion 360.
• Support machine setups, prove-out runs, and first-article validation alongside experienced machinists and engineers.
• Operate CNC machinery as needed to support prototype and production work, including basic setup, inspection, and troubleshooting.
• Support the design and fabrication of workholding and fixturing solutions to improve setup repeatability and minimize cycle time.
• Collaborate with machinists and engineers to evaluate and refine fixturing approaches based on production feedback.
• Assist in documenting machining processes, tooling lists, and setup sheets to ensure repeatability and compliance with quality system requirements.
• Help develop written work instructions that are clear and complete enough for others to independently execute part manufacturing.
• Support updates to existing process documentation to reflect current best practices and any changes implemented during the co-op term.
• Identify at least one continuous improvement opportunity during the co-op term, propose a solution, and support its implementation with guidance from the engineering team.
• Participate in root cause analysis and corrective action activities for production issues.
• Contribute to improvement projects related to machine utilization, process capability, and workplace organization (5S).
• Help refine tool paths, cut strategies, and manufacturing processes for improved quality and efficiency.
• Support other departments such as Quality, Additive Manufacturing, and Assembly as needed based on business demand.
• Attend team meetings and contribute actively to discussions, bringing a fresh perspective and a willingness to learn.
• Complete an end-of-term summary documenting key contributions, lessons learned, and recommended improvements for handoff to the engineering team.
• Support other projects and assignments as needed.

Benefits

• Regularly operates a computer workstation for CAM programming, documentation, and communication tasks.
• Regularly stands, walks, and works on the manufacturing floor during machine setups, process observations, and production support activities.
• Must wear 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.

What This Job Offers

• Career Level: Intern