Senior CNC Machinist / Programmer

Column Technical Services•Alsip, IL

5d•Onsite

About The Position

Column Technical is seeking an experienced Senior CNC Machinist / Programmer for an onsite role in Alsip, Illinois. The position is with a well-established precision manufacturer producing and restoring components for the power generation, oil and gas, OEM, and industrial repair industries. The company is ISO 9001:2015 and ISO 14001:2015 certified. This hands-on role involves independently managing complex projects from blueprint interpretation through programming, setup, machining, inspection, and final production. The successful candidate will bring extensive CNC programming and machining expertise, take ownership of challenging work, and serve as a technical resource and mentor to the team. The schedule is Monday through Friday, 7:00 AM to 3:30 PM, with overtime available; the posting notes overtime of approximately 45 hours per week.

Requirements

7–10+ years of CNC machining experience in precision manufacturing or industrial machining environments.
Extensive experience with CNC mills and/or lathes, including advanced setups.
Ability to independently program, set up, and machine components from engineering drawings.
Strong knowledge of CNC programming, machining processes, G-code, and M-code.
Advanced understanding of GD&T, tolerancing, and precision measurement techniques.
Experience selecting tooling, designing fixtures, and optimizing machining processes.
Demonstrated troubleshooting and problem-solving capabilities.
Proficiency using calipers, micrometers, bore gauges, indicators, and related measuring tools.
Strong understanding of metals, cutting applications, machining speeds, and feeds.
Ability to perform machining calculations and shop math accurately.
Commitment to quality, safety, accountability, and productivity.
Strong communication and teamwork skills.
High school diploma or GED.

Nice To Haves

Technical or vocational training.
Journeyman-level or expert CNC machining background.
Experience with CAD/CAM software such as Mastercam or comparable platforms.
Multi-axis machining experience, including 4-axis and 5-axis equipment.
Familiarity with Fanuc, Haas, Mazak, or similar CNC controls.
Experience producing custom, complex, high-precision components.
Manual machining experience with mills, lathes, and grinders.
Background in industrial equipment, rotating equipment, pumps, or OEM manufacturing.
Proven success improving machining efficiency and production processes.
Experience training, mentoring, or leading other machinists.

Responsibilities

Program, set up, operate, and troubleshoot CNC mills and lathes independently.
Create, modify, and optimize CNC programs using G-code and M-code.
Interpret engineering drawings, blueprints, GD&T requirements, and machining specifications.
Perform advanced machine setups, select tooling, develop fixtures, and adjust work holding.
Manufacture precision components to customer and engineering specifications.
Select machining methods, feeds, speeds, and tooling to improve efficiency and quality.
Diagnose and resolve machining, programming, and dimensional issues with minimal supervision.
Conduct first-article, in-process, and final inspections using precision measuring equipment.
Collaborate with Engineering, Quality, and Production teams to address manufacturing challenges.
Support manual machining operations, including mills, lathes, and grinding equipment, as needed.
Identify opportunities to improve cycle times, reduce setup times, and minimize scrap.
Maintain accurate production and inspection documentation.
Mentor and support less experienced machinists.
Follow safety, quality, and maintenance standards.