Machinist / CNC Operator

Job Description

Job Description

Machinist / CNC Operator
Company: Mission Critical Solutions (MCS) — Critical Equipment Division
Location: Alum Bank, Pennsylvania
Reports To: Manufacturing Manager / Lead Engineer
Position Summary
Mission Critical Solutions (MCS) is seeking a skilled Machinist / CNC Operator to support
precision manufacturing of custom components for defense, infrastructure, and industrial
applications. The ideal candidate has hands-on experience in setup, operation, and basic
programming of CNC lathes and mills, and is comfortable working from technical drawings
and CAD/CAM files to produce tight-tolerance parts in steel, aluminum, and specialty alloys.
This position plays a key role in producing parts that meet ISO 9001 and CMMC quality
standards for MCS’s Critical Equipment product line, including TL-4 rated road barrier
systems, mobile power platforms, and precision-fabricated assemblies.
Key Responsibilities:
 Set up and operate CNC mills, lathes, and manual machines to produce precision parts
per engineering drawings and specifications.
 Read and interpret blueprints, GD&T drawings, and process sheets to determine
machining requirements.
 Create, edit, and optimize CNC programs using G-code and/or CAM software.
 Verify part dimensions using precision measuring instruments (micrometers, calipers,
height gauges).
 Perform tool setup, offsets, and fixture alignment to ensure part accuracy and
repeatability.
 Maintain machine cleanliness, lubrication, and safety standards.
 Collaborate with engineering and fabrication teams to resolve design or
manufacturability challenges.
 Contribute to continuous improvement efforts in productivity, quality, and safety.
 Document production runs and inspection results in accordance with internal quality
procedures.
Desired Technical Experience:
 CNC Programming:
 Proficiency with G-code, Fanuc, Haas, or Siemens controls.
 Experience using CREO or GIBBSCAM for toolpath creation preferred.
 Ability to make on-machine program edits and optimizations.

 Machining Processes:
 3- and 4-axis milling, turning, drilling, and tapping of steels, aluminum, and specialty
materials.
 Understanding of feeds, speeds, and tooling selection.
 Have some experience with manual mills and lathes.
 CAD/CAM Integration:
 Experience reading and working from 3D CAD models (STEP/IGES/SolidWorks).
 Ability to provide feedback to engineering on model-to-part transition issues.
 Quality & Inspection:
 Familiarity with ISO 9001 documentation and quality control practices.
 Use of CMM or optical inspection systems is a plus.
Qualifications:
 2+ years of CNC machining or equivalent technical experience.
 Trade school diploma or associate degree in Machining Technology, Manufacturing
Engineering, or related field preferred.
 Demonstrated ability to read and interpret complex engineering drawings.
 Strong mechanical aptitude and attention to detail.
 Ability to work independently and as part of a cross-functional team.
 Must meet eligibility requirements for work on defense-related contracts (U.S.
citizenship required).
Compensation & Benefits:
 Competitive hourly wage based on experience.
 Overtime opportunities and performance incentives.
 Health, dental, and vision insurance.
 401(k) plan with company match.
 Paid time off and holidays.
 Opportunities for training and advancement in advanced manufacturing and
engineering support roles.