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CNC Machinist

Rennscotmfg

Woburn

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About the role

About the Opportunity

We're looking for an experienced CNC Machinist to work across our machining platform, including vertical mills, 5-axis mills, turning centers, and mill-turn machines. You'll set up and run production, maintain high quality standards, troubleshoot issues, and help us continuously improve how we work.

What You'll Do

  • Set up and operate CNC equipment across multiple platforms, including fixturing, tooling, datums, work offsets, and first-piece validation.

  • Monitor part quality and machine performance using calipers, micrometers, height gauges, and other hand metrology tools.

  • Troubleshoot machining issues related to tooling, workholding, materials, and machine performance.

  • Support process improvements by identifying opportunities to improve tooling, fixturing, setup, and workflow efficiency.

  • Maintain accurate production records in ProShop ERP, including job time, status updates, and production notes.

  • Maintain shop standards by deburring and cleaning parts, performing routine machine maintenance, following 5S practices, and keeping your workspace safe and organized.

  • Contribute to the team by sharing knowledge, participating in training, and helping reinforce machining best practices.

What We’re Looking For

  • H.S. Diploma & 4+ years of relevant experience; or A.A. in Manufacturing, Machining Technology, or a related field & 2+ years of relevant experience.

  • Relevant experience includes hands-on experience setting up and operating CNC mills, lathes, and/or mill-turn equipment.

  • Experience using hand metrology tools and interpreting technical setup documentation.

  • Familiarity with Haas, Okuma, and/or Heidenhain controls preferred.

  • ProShop ERP or similar manufacturing ERP experience is a plus.

  • Strong CNC setup skills, including tooling, workholding, offsets, and first-piece validation.

  • Ability to read setup sheets, work instructions, technical drawings, and GD&T.

  • Strong attention to detail and commitment to quality.

  • Ability to troubleshoot machining and process issues.

  • Clear communication and ability to work effectively with machinists, programmers, engineers, and other team members.

Physical Requirements

The physical demands described below are representative of those that must be met by an employee to successfully perform the essential functions of this role.

  • Regularly stand, walk, bend, reach, and move throughout an active manufacturing environment.

  • Lift and carry parts, materials, tooling, and fixturing; occasionally up to 50 lbs. Team lifts are required for heavier items.

  • Use hand metrology instruments and precision tooling requiring manual dexterity and repetitive hand or wrist movements.

  • Read technical documentation and visually inspect machined components.

  • Wear required PPE on the shop floor, including safety glasses, hearing protection, and steel-toed footwear.

  • Overtime may be available and is occasionally required. Some non-standard hours, including early mornings or evenings on weekdays and weekends, may be needed.

Job Type: On-Site

Job Location: Woburn, MA

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.