Senior Manufacturing Engineer - CNC Machining

What You'll Do

• Develop CNC programs and machining strategies for complex components

• Select tooling, fixturing, and workholding for new jobs

• Lead machine prove-outs and solve difficult machining challenges

• Improve cycle times, quality, and process consistency

• Create clear setup documentation that operators can rely on

• Work alongside machinists, programmers, engineers, and customers to bring new parts into production

• Mentor programmers and machinists while helping raise the technical capability of the team

• Drive continuous improvement throughout the shop

What Makes You Successful

You'll fit in well if you:

• Enjoy solving machining problems that others can't

• Take pride in building processes that run right the first time

• Know how to balance quality, efficiency, and production demands

• Lead by example and enjoy sharing your knowledge

• Stay calm under pressure and find practical solutions

• Constantly look for ways to improve the way work gets done

Why You'll Like Working Here

• Machine complex aerospace and defense components—not production widgets

• Modern equipment including 5-axis machining and advanced CAM software

• Freedom to make decisions and improve processes

• Your experience is respected and your ideas are heard

• Work alongside people who care about craftsmanship and quality

• Join a company investing in technology, people, and long-term growth

What We're Looking For

We're more interested in what you've done than where you went to school.

You should have:

• Strong experience programming and machining complex CNC parts

• Experience with multi-axis machining

• Deep understanding of tooling, fixturing, and machining strategy

• Ability to read engineering drawings and GD&T

• Experience taking new parts from prototype into production

• Confidence troubleshooting difficult machining and programming issues

• CAM software experience (Hypermill or ESPRIT is a plus)

Whether your experience came through the shop floor, an apprenticeship, military service, trade school, or engineering, we value people who can do the work.

Physical Requirements

• Ability to work in both office and manufacturing environments.

• Frequently stand, walk, bend, kneel, reach, and move throughout the facility.

• Occasionally lift and carry up to 50 pounds (team lifts when appropriate).

• Ability to use computers, CNC equipment, hand tools, and precision measuring instruments.

• Visual ability to read technical drawings, inspect machined parts, and use precision measurement equipment.

• Ability to wear required PPE and safely work around industrial machinery and equipment.

• Ability to communicate effectively with employees, customers, and suppliers.

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:

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.