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Rennscot MFG

Metal additive manufacturing and CNC machining

Industrial Engineer Co-op

InternshipUpdated on 10/23/2026
$0.01 - $0.01/hr
Bachelor's
Woburn, MA, USA
In PersonOn-site in Woburn, Massachusetts.
Manufacturing & Process EngineeringManufacturing Engineering

About the job

Requirements
  • Currently pursuing a bachelor's degree in Industrial Engineering, Manufacturing Engineering, Mechanical Engineering, Systems Engineering, Operations Engineering, or a related engineering discipline.
  • Previous internship, co-op, manufacturing, laboratory, or hands-on technical experience is beneficial but not required.
  • Enjoy analyzing problems and data to identify patterns and opportunities for improvement.
  • Be interested in manufacturing, operations, process improvement, and continuous improvement.
  • Be comfortable working with numbers and organizing, analyzing, and interpreting data to support decisions.
  • Pay attention to detail while considering the bigger picture.
  • Be willing to work hands-on and spend time on the manufacturing floor learning from people and processes.
  • Communicate effectively, ask questions, and collaborate with people across teams and disciplines.
  • Take ownership of work, manage multiple priorities, and make progress independently while working as part of a team.
  • Be comfortable using Microsoft Excel and interested in learning tools such as data analytics, process mapping, CAD, ERP/MRP systems, or data visualization.
  • Have exposure to or interest in learning Lean Manufacturing, Six Sigma, 5S, value-stream mapping, and other continuous improvement approaches.
  • Regularly work at a computer and stand, walk, and move throughout an active manufacturing facility.
  • Occasionally bend, reach, access manufacturing work areas, and lift or carry materials, equipment, or documentation weighing up to 25 pounds.
  • Work near active manufacturing operations, follow applicable safety requirements, and wear required personal protective equipment on the manufacturing floor.
  • Meet ITAR eligibility requirements as a U.S. citizen, lawful permanent resident, protected individual under 8 U.S.C. 1324b(a)(3), or person eligible to obtain required authorizations from the U.S. Department of State.
Responsibilities
  • Improve manufacturing processes by evaluating workflows, production systems, and material flow to identify opportunities to increase efficiency, quality, and throughput.
  • Conduct time studies, cycle-time analyses, process observations, and workflow assessments on the manufacturing floor.
  • Collect and analyze manufacturing data to identify trends, bottlenecks, and improvement opportunities.
  • Support capacity planning for equipment, labor, manufacturing processes, and other operational resources.
  • Help develop and monitor key performance indicators such as throughput, cycle time, utilization, downtime, work-in-process, and labor efficiency.
  • Evaluate equipment, work-cell, and facility layouts to improve material flow, ergonomics, productivity, and use of space.
  • Create process maps, value-stream maps, workflow diagrams, and current- and future-state models.
  • Apply Lean principles through projects involving 5S, standard work, visual management, root cause analysis, and waste reduction.
  • Develop and maintain standard work, operating procedures, and manufacturing documentation.
  • Use manufacturing systems and data to support production analysis, scheduling, capacity planning, and continuous improvement.
  • Collaborate with Manufacturing Engineering, Production, Quality, Supply Chain, and other teams.
  • Develop recommendations, present findings, support implementation, and evaluate whether improvements deliver intended results.
Desired Qualifications
  • Coursework in manufacturing systems, operations research, statistics, process improvement, engineering economics, manufacturing processes, materials, or engineering design.
  • Exposure to Lean Manufacturing or Six Sigma principles through coursework, projects, or previous experience.

About the company

Rennscot MFG provides end-to-end advanced manufacturing services focused on metal additive manufacturing and precision CNC machining for mission-critical components. It uses direct metal laser sintering and 5-axis CNC machining, along with polymer 3D printing and automated processes, to take parts from design and prototyping to full production. The company differentiates itself by acting as a single-source shop that combines additive and subtractive manufacturing under one roof, backed by structured quality programs and a nimble, hands-on team. Its goal is to reliably deliver high-performance, tightly toleranced parts from prototype to production for aerospace, defense, automotive, and emerging technologies, while expanding capacity and maintaining fast turnaround.

Company Size

11-50

Company Stage

N/A

Total Funding

N/A

Headquarters

Woburn, Massachusetts

Founded

2017

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Simplify Jobs

Simplify's Take

What believers are saying

  • May 2026 JAQS Group 1 selection strengthens credibility with America Makes and OSD ManTech.
  • 2026 hiring across additive, CNC, and HR signals active production scaling.
  • 2025 facility expansion to 80,000 square feet creates room for more programs.

What critics are saying

  • Defense qualification takes years; JAQS standards can stall revenue if adoption slips in 2027.
  • Heavy dependence on regulated aerospace and defense customers exposes contracts to export-control shocks.
  • Automation and capital intensity demand constant utilization; underfilled 80,000 square feet crushes margins.

What makes Rennscot MFG unique

  • Rennscot combines LPBF, 5-axis CNC, inspection, and assembly in Woburn.
  • Its 2026 JAQS selection validates defense-grade additive qualification expertise.
  • In-house automation and software extend machine runtime beyond 120 weekly hours.

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Benefits

  • Training Programs