POSITION SUMMARY
We are seeking an experienced CNC Programmer / Mastercam Programmer with 10+ years of machining experience and 5+ years of Mastercam programming experience to support high-precision manufacturing operations in a fast-paced military production environment. This role requires expertise in multi-axis machining, strong technical problem-solving skills, and the ability to produce mission-critical components with strict quality and compliance standards.
ESSENTIAL FUNCTIONS AND RESPONSIBILITIES
- Program 3-axis, 4-axis, and 5-axis CNC milling machines using Mastercam
- Program CNC lathes and mill-turn machines
- Develop, optimize, and troubleshoot complex toolpaths for tight-tolerance parts
- Interpret and work from complex blueprints, GD&T, and military specifications
- Set up and prove out new programs on the shop floor
- Select appropriate tooling, fixtures, and cutting strategies for high-efficiency machining
- Collaborate with engineers, machinists, and quality control personnel
- Maintain program documentation and revision control
- Improve cycle times while maintaining quality and safety standards
- Support continuous improvement initiatives in a high-mix, low-volume environment
Requirements
QUALIFICATIONS, SKILLS, AND ABILITIES
- 5 years of Mastercam programming experience
- Strong experience with 5-axis simultaneous machining
- Experience with 3-axis mills, CNC lathes, and mill-turn equipment
- Deep understanding of feeds, speeds, tooling, and work holding
- Proficiency in reading blueprints and applying GD&T
- Experience working in a military, aerospace, or defense manufacturing environment preferred
- Ability to obtain or maintain required security clearance (if applicable)
- Due to the nature and importance of GSM’s work, our positions require access to export-controlled information. Therefore, all candidates must qualify as a U.S. Person under applicable export-control/ITAR regulations or otherwise be authorized to access such information under U.S. law.
Technical Skills
- Advanced Mastercam proficiency (multi-axis toolpaths, dynamic milling, multi-surface programming)
- G-code knowledge and editing capability
- Fixture design input and setup strategy development
- Strong knowledge of tight-tolerance machining (±.0005” )
- Experience machining high-strength alloys (titanium, Inconel, hardened steels, aluminum alloys)
Work Environment
- High-paced, deadline-driven military manufacturing environment
- Strict adherence to quality, documentation, and compliance standards
- Team-oriented shop floor with cross-functional collaboration
- Emphasis on precision, repeatability, and mission-critical reliability
Key Competencies
- Strong problem-solving and analytical skills
- Attention to detail and quality-focused mindset
- Ability to prioritize and manage multiple jobs simultaneously
- Effective communication with production and engineering teams
- Commitment to safety and continuous improvement
EEO STATEMENT
Granite State Manufacturing (GSM) is an equal opportunity employer. GSM does not discriminate on the basis of race, color, religion, sex, gender, gender identity or expression, national origin, citizenship, veteran status, age, physical or mental disability, genetic information, marital status, sexual orientation, or any other consideration made unlawful by applicable federal, state, or local laws in its programs, activities, or employment.
Benefits
Granite State Manufacturing offers a comprehensive benefits package to all GSM employees.
- Paid time off
- Floating holidays
- Paid holidays
- 401(k)
- 401(k) company matching
- Dental & Vision insurance (Company paid)
- Disability benefits
- Employee assistance program
- Flexible spending account
- Competitive health insurance
- Health savings account
- Life insurance
- Voluntary benefits
- Referral program
…and much more.
Skills Required
- 5 years of Mastercam programming experience
- Strong experience with 5-axis simultaneous machining
- Experience with 3-axis mills, CNC lathes, and mill-turn equipment
- Proficiency in reading blueprints and applying GD&T
- Experience in a military, aerospace, or defense manufacturing environment
Granite State Manufacturing Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Granite State Manufacturing and has not been reviewed or approved by Granite State Manufacturing.
-
Affordable Benefits — Health coverage is described as having low employee contributions with the employer covering a substantial share in many cases. This reduces out-of-pocket costs alongside options like FSAs and wellness incentives.
-
Healthcare Strength — Medical, dental, and vision plans are offered together with company-paid short- and long-term disability and life/AD&D insurance. Additional programs such as an EAP and voluntary worksite benefits expand the protection set.
-
Retirement Support — A 401(k) with company match is included to support long-term savings. The broader package is complemented by paid time off and holidays.
Granite State Manufacturing Insights
What We Do
Granite State Manufacturing (GSM) is a New Hampshire-based precision manufacturer with more than 85 years of history and a clear purpose: building complex systems that support the U.S. Navy submarine fleet. From our facilities in Manchester and Nashua, NH, our 170+-person team produces precision-machined components, certified weldments, electromechanical assemblies, and integrated systems for U.S. Navy programs, including submarine life support, sonar, & communications systems. We hold AS9100D, ISO 9001:2015, and ITAR registrations — and we take those standards seriously, because the people who use what we build depend on them. GSM is a growing company. We've received Navy Supplier Development Funding across four programs, invested in advanced 5-axis machining, large-scale welding, and high-bay assembly capability, and helped build active training partnerships with Nashua Community College, Manchester Community College, and UMass Lowell — with machining and welding programs funded in full by the U.S. Navy. Machinists, welders, quality professionals, engineers, planners, and program managers are some of the roles we hire for. People who do their best work when the stakes are real. If that sounds like you, we'd like to talk.
Why Work With Us
We machine, weld, and assemble systems for U.S. Navy submarines. Not generic contract work — specific, high-consequence builds that have to be right. Family-owned for 85+ years. Two NH facilities. Work worth being good at.
Gallery
