AEROSPACE CNC Programmers

Repligen is seeking a highly skilled and detail-oriented CNC Programmer/Machinist with a minimum of five (5) years of hands-on experience in programming, setting up, and operating 3-, 4-, and 5-axis CNC machines within a fast-paced production environment. This role is responsible for overseeing the full machining lifecycle-from initial programming and setup through final production and quality validation.
Responsibilities include machine and fixture setup, tool selection, prove-outs, and executing production runs that consistently meet tight tolerance and quality requirements.
In addition to core machining responsibilities, this role involves working with 3D models, supporting fixture design and process improvements, conducting in-process inspections, and performing secondary finishing operations such as polishing and metal finishing. The successful candidate will collaborate closely with Engineering and the Shop Supervisor to identify opportunities for continuous improvement, streamline workflows, and enhance overall production performance.
"This role is expected to model our Leadership Behaviors-Integrity & Compliance, Customer Focus, Collaboration, Courage, Team Empowerment, and Accountability & Results-in all aspects of work."
Program, set up, and operate 3-, 4-, and 5-axis CNC machines in a production environment
Develop, refine, and optimize tool paths to improve cycle times, quality, and repeatability
Run production parts while ensuring compliance with tight tolerances and customer specifications
Conduct in-process inspections using appropriate measuring tools and make necessary adjustments to maintain quality standards
Perform secondary operations such as polishing, sanding, and finishing as required
Interpret technical drawings, blueprints, and 3D models to support accurate machining
Education and/or Work Experience Requirements:

• 5-6 years of CNC programming experience in a precision environment
• Proven expertise in CNC machining and programming in a high-volume setting
• Minimum 5 years of Mastercam programming experience (required)
• Proficiency in CAM software (Mastercam) and CAD software (SolidWorks required, Esprit a plus)
• Strong experience with 3-, 4-, and 5-axis CNC machines
• Experience supporting aerospace OEMs (e.g., Ability to read and interpret engineering drawings, blueprints, CAD models, and GD&T
• High school diploma or equivalent; technical training preferred
• Willingness to work overtime and weekends as needed

Regularly exposed to work near moving mechanical parts and vibration
Occasionally exposed to fumes, toxic or caustic chemicals or airborne particles
Occasional work outside of the cleanroom

This position is generally indoors, in a well-lighted, heated, fan-cooled production environment. All work is primarily standing (90 + % of the shift) with the exception of breaks, lunch periods, and the occasional meeting. The incumbent is required to regularly lift, carry, bend, move, and manage materials weighing up to 45 pounds each on a regular basis.

Our mission is to inspire advances in bioprocessing as a trusted partner in the production of biologic drugs that improve human health worldwide. Focused on cost and process efficiencies, we deliver innovative technologies and solutions that help set new standards in bioprocessing. The estimated hourly rate/salary range for this role, based in the United States of America is $33.00-$45.00. Compensation decisions are dependent on several factors including, but not limited to an individual's qualifications, location, internal equity, and alignment with market data. Additionally, employees are eligible to participate in one of our variable cash programs (bonus or commission) and eligible roles may receive equity as part of the compensation package. We offer a wide range of benefits such as paid time off, health/dental/vision, retirement benefits and flexible spending accounts.