CNC Machinist - Advanced Rotary Engines

CNC Machinist - Advanced Rotary Engines
This role is fully onsite in Bloomfield, CT, five days per week. The company will be relocating to Suffield, CT later in 2026.

About LiquidPiston: LiquidPiston is pioneering next-generation rotary engine technologies that are transforming power generation and propulsion. Our engineers and technicians build high-performance prototypes that deliver breakthrough efficiency, power density, and compact design. We are looking for a talented CNC Programmer and Prototype Machinist to join our fast-moving R&D team and help bring innovative concepts from design to physical testing.
Position Summary: As a CNC Programmer & Prototype Machinist, you will play a critical hands-on role in machining precision parts for engine prototypes, test rigs, and development hardware. This position demands advanced CNC programming skills, strong machining expertise, and the ability to thrive in a dynamic, high-tempo prototype environment. The ideal candidate is a self-motivated problem-solver who enjoys working directly with engineers to turn ideas into working hardware using both CNC and manual equipment.
Key Responsibilities

• Develop, optimize, and maintain CNC programs for complex multi-axis milling and turning operations.
• Set up and operate CNC mills and lathes (primarily Haas and Fanuc controls) to produce tight-tolerance prototype components.
• Generate efficient toolpaths and programs in MasterCam (preferred) from engineering drawings, 3D models, and verbal instructions.
• Machine high-precision parts while verifying conformance to specifications using precision measurement tools.
• Run manual machines as needed, including Bridgeport mills, manual lathes, and surface grinders.
• Partner with design and engineering teams to provide DFM feedback and refine prototype designs for manufacturability.
• Support process development, including tooling selection, fixture design, and continuous improvement of machining methods.
• Maintain a clean, organized, and safe workspace while following all company safety protocols.

Required Qualifications

• Solid experience programming and operating CNC mills and lathes, with strong preference for multi-axis milling work.
• Working knowledge of Haas and Fanuc controllers.
• Proficiency with MasterCam for programming and toolpath generation (highly preferred; other CAM experience considered).
• Hands-on capability with manual machine tools (Bridgeport mill, engine lathe, surface grinder).
• Ability to interpret detailed mechanical drawings, including GD&T callouts.
• Proven problem-solving skills and comfort working independently on prototype and one-off projects.
• High level of attention to detail and personal accountability for quality.
• Strong communication skills and a collaborative mindset in a fast-paced R&D setting.

Benefits & Perks

• PTO:   We value work–life balance and encourage time to rest and recharge. Our benefits include 3 weeks of PTO (which covers vacation and sick time) plus 10 paid holidays.
• Health & Wellness: Comprehensive medical and voluntary dental, and vision coverage - you choose what works best for you.
• Equity Participation: Employes may receive RSUs (Restricted Stock Units).
• 401(k) Match: We offer a 401k w/100% matching up to 3% of your salary and then 50% of contributions between 3-5% after 1 year of employment. 
• Career Growth: Ongoing training, mentorship, and learning opportunities to accelerate your growth.

Our Culture
At LiquidPiston, we embrace challenges, move fast, and celebrate curiosity. Our team thrives on collaboration, creativity, and perseverance. We understand that innovation involves risk - and we’re not afraid to fail as we move forward.
Equal Opportunity Employer
LiquidPiston, Inc. is proud to be an Equal Opportunity Employer. Qualified applicants will not be discriminated against, and receive consideration for employment without regard to race, color, religion, gender, sexual orientation, gender identity, national origin, or protected veteran status or disability.
All offers of employment at LiquidPiston are contingent upon successful completion of a pre-employment background check and drug screening.