Senior CNC Machinist

Last Energy

$75K — $95K *
Manufacturing & Automotive
8 - 10 years of experience
Job Overview by Ladders

Qualifications

  • Minimum 8+ years of hands-on mechanical fabrication and precision machining experience, with at least 3 years at a senior level in a high-growth environment.
  • Deep proficiency in CNC programming (G-code and CAM software) and complex blueprint reading, including GD&T.
  • Proven ability to quickly turn concepts into tested prototypes with minimal oversight.
  • Exceptional communication skills for effective collaboration with engineers and cross-functional teams.
  • Strong problem-solving drive with a bias toward action in fast-paced circumstances.
  • Advanced CAD/CAM proficiency is required.
  • Experience in material science and specialized welding (TIG/MIG) is a plus.

Responsibilities

  • Lead the design and execution of complex component fabrication using advanced precision machining equipment.
  • Develop, edit, and optimize CNC programs for efficiency and quality of nuclear-grade components.
  • Oversee high-precision quality control to ensure parts meet engineering requirements and GD&T standards.
  • Collaborate with engineers to provide technical insights on fabrication priorities and improve manufacturability.
  • Design and implement advanced tooling and fixtures to enhance assembly and testing scalability.
  • Establish and enforce best practices for shop operations and equipment maintenance.
  • Troubleshoot and maintain all shop equipment, coordinating external services as needed.

Benefits

  • Opportunity to work in a pioneering technology company focused on next-generation nuclear power.
  • Growth potential in a high-urgency and innovative environment.
  • Collaborative team culture supportive of creativity and technical insights.
  • Engagement in projects that contribute to decarbonizing energy production for a sustainable future.
Full Job Description
We are seeking a highly skilled and results-driven Senior CNC Machinist to serve as a technical expert within our R&D team. This role requires an experienced builder and doer to operate autonomously, taking ownership of complex part fabrication critical to our fleet-wide product. Your work will directly support high-throughput manufacturing and rapid deployment strategies, demanding speed, ingenuity, and accountability.

Key Duties & Responsibilities

  • Precision Machining Leadership: Lead design and execution on complex component fabrication by independently setting up, programming, operating, and maintaining advanced precision machining equipment, including multi-axis CNC mills and lathes, laser cutters, and high-precision welding equipment
  • CNC Programming & Optimization: Drive concept development into reality by developing, editing, and optimizing CNC programs (G-code or CAM software) to maximize efficiency, ensure repeatability, and maintain quality critical for nuclear-grade components
  • Quality Assurance & Inspection: Oversee the fabrication process by performing rigorous, high-precision quality control using advanced metrology tools (CMM, gauges) to verify parts meet specified engineering requirements and tight geometric dimensioning and tolerancing (GD&T) standards
  • DFM Collaboration: Collaborate daily with engineers and leadership on the company's most urgent fabrication priorities, providing technical insights to streamline designs, improve manufacturability, and accelerate deployment timelines
  • Tooling & Fixtures: Design, develop, and implement advanced fixtures, tooling, and manufacturing aids to streamline assembly and test operations for maximum scalability
  • Shop Management: Operate autonomously by establishing and enforcing best practices for all shop operations, advanced tool management, preventive maintenance, and strict adherence to safety protocols
  • Equipment Expertise: Perform advanced troubleshooting and maintenance on all shop equipment, documenting repairs and coordinating external service when necessary to ensure maximum machine uptime


Qualifications

  • Experience & Education: Minimum 8+ years of hands-on mechanical fabrication and precision machining experience, with at least 3 years at a lead or senior level in a high-growth, high-urgency environment. Formal apprenticeship or Machinist Certification highly preferred
  • Technical Expertise: Deep proficiency in CNC programming (G-code and CAM software), advanced shop mathematics, and complex blueprint reading (including GD&T)
  • Prototyping Skill: Proven ability to turn concepts into tested prototypes quickly, managing complex fabrication projects from concept to reality with minimal oversight
  • Communication: Exceptional communication and collaboration skills, especially when interfacing with engineers and cross-functional teams on urgent technical challenges
  • Drive: A bias toward action, creative problem solving, and the drive to own complex fabrication problems end-to-end in a fast-paced environment
  • Advanced CAD/CAM proficiency is required
  • Experience advising on material science, machinability, and tool selection for specialized alloys is a plus
  • Knowledge of specialized welding (TIG/MIG) is a significant asset
  • Previous experience as a Machine Shop Supervisor or Lead CNC Machinist is preferred


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