Prototype Machinist

LiquidPiston Inc.; Bloomfield (CT); On-site; USD 34,440 - 48,216; Part time

Benefits offered by this job

3 weeks of PTO

Health and wellness benefits

Equity participation

401(k) match

Career growth opportunities

Job summary

LiquidPiston Inc. is hiring a CNC Programmer/Prototype Machinist based in Bloomfield, CT, dedicated to creating precision components for engine prototypes. This full-time, onsite role emphasizes CNC programming, manual machining, and collaborative design improvement.

The ideal candidate has strong problem-solving skills, attention to detail, and experience with CNC machines and controls. Benefits include 3 weeks of PTO, comprehensive health coverage, and equity participation.

Qualifications

• Strong CNC programming and machining experience.
• Ability to work independently on prototype projects.
• Experience reading and interpreting mechanical drawings.

Responsibilities

• Program and operate CNC milling machines and lathes.
• Create and optimize machining programs with MasterCam.
• Inspect parts for accuracy and quality.

Skills

CNC programming

Attention to detail

Manual machining

Problem-solving skills

Tools

MasterCam

Haas controls

Fanuc controls

Job description

CNC Programmer/Prototype Machinist - LiquidPiston

This role is fully onsite in Bloomfield, CT, five days per week, and the company will be relocating to Suffield, CT later in 2026.

Employment Type: Hourly

About LiquidPiston:

LiquidPiston is developing advanced rotary engine technologies that redefine what is possible in power generation and propulsion. Our team designs and builds cutting‑edge prototypes that push the boundaries of efficiency, performance, and size. We are seeking a highly skilled Prototype Machinist to support our rapid development and testing initiatives.

Position Summary:

The Prototype Machinist will be responsible for machining precision components for engine prototypes and test fixtures. This role requires strong CNC programming and machining experience, exceptional attention to detail, and the ability to work in a fast‑paced R&D environment. The ideal candidate is hands‑on, self‑driven, and comfortable working with both CNC and manual equipment.

Key Responsibilities

• Program, set up, and operate CNC milling machines and lathes, with an emphasis on multi‑axis milling.
• Utilize Haas and Fanuc controls to execute complex machining operations.
• Create and optimize machining programs using MasterCam (preferred).
• Produce high‑precision prototype components from engineering drawings, 3D models, and sketches.
• Inspect parts to ensure dimensional accuracy and quality standards are met.
• Operate manual machine tools, including:
  • Surface grinder
  • Bridgeport mill
  • Manual lathe
• Collaborate closely with engineers, designers, and technicians to refine prototype designs.
• Maintain a safe, clean, and efficient work environment.
• Assist in developing machining processes, tooling selections, and fixture designs for prototype builds.

Required Qualifications

• Proficiency operating and programming CNC mills and lathes; experience with multi‑axis milling strongly preferred.
• Strong working knowledge of Haas and Fanuc controls.
• Experience programming and tool‑pathing using MasterCam (preferred but not required).
• Demonstrated ability to operate manual machine tools (surface grinder, Bridgeport, manual lathe).
• Ability to read and interpret complex mechanical drawings and GD&T.
• Strong problem‑solving skills and the ability to work independently on prototype projects.
• High attention to detail and commitment to quality.

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: Employees may receive RSUs (Restricted Stock Units).
• 401(k) Match: We offer a 401(k) with 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.

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.