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Senior Design Engineer

LiquidPiston

Suffield, CT

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JOB DETAILS
JOB TYPE
Full-time
SKILLS
Aerospace and Defense, Analysis Skills, Applications Security, Communication Skills, Documentation, Internal Combustion Engine, Leadership, MATLAB, Machining, Manufacturing Design, Mechanical Design, Mechanical Engineering, Mentoring, Performance Management, Problem Solving Skills, Prototyping, Request for Proposals (RFP), Risk, Robotics, Simulation, SolidWorks, Standards Development, Systems Analysis, Team Lead/Manager, Team Player, Technical Drawing, Technical Presentation, Technical/Engineering Design, Testing, Writing Skills
LOCATION
Suffield, CT
POSTED
30+ days ago
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.​​​​​​​
About LiquidPiston
LiquidPiston, Inc. is reinventing the internal combustion engine. Our patented X-engine architecture is a compact, lightweight, and fuel-efficient rotary engine that operates on a novel thermodynamic cycle. With applications in defense, aerospace, robotics, and portable power, we’re developing the next generation of high-performance, compact engines for critical power systems.
We are seeking a Senior Design Engineer to play a key role in the design, simulation, and development of our advanced rotary engines. This is a hands-on, high-impact engineering role ideal for someone with a deep understanding of engine systems, a passion for innovation, and a strong background in mechanical design and simulation.
Key Responsibilities:
  • Generate and evaluate new ideas to improve the performance, durability, and manufacturability of LiquidPiston’s rotary engines.
  • Create detailed part and assembly models using SolidWorks.
  • Lead early-stage engine architecture and layout processes.
  • Perform component and system-level analysis using a combination of hand calculations, simulation tools, and experimental data.
  • Create and release production-ready technical drawings.
  • Select and coordinate with suppliers and machine shops—from RFQ to incoming inspection.
  • Support and oversee engine assembly processes; contribute to hands-on prototyping.
  • Participate in engine testing and interpret results to inform design iterations.
  • Create and maintain standardized procedures for engine design, analysis, and documentation.
  • Lead and mentor technicians, interns, and junior engineers on design and analysis tasks.
  • Present technical ideas and results clearly to both technical and non-technical stakeholders.
  • Maintain a collaborative, proactive, and positive engineering mindset.
Minimum Requirements:
  • BS or higher in Mechanical Engineering
  • 3+ years of experience in engine component/system design and simulation
  • Strong understanding of internal combustion engines and design for manufacturing
  • Proficient in SolidWorks (modeling and assemblies)
  • Experience with mechanical, thermal, and fluid simulation tools (e.g., ANSYS, GT-Suite, MATLAB)
  • Ability to independently lead projects, solve problems, and communicate results effectively
Helpful Skills:
  • Experience with advanced engine concepts (e.g., rotary, Miller cycle, HCCI, etc.)
  • Professional experience designing high-speed machinery: camshafts, bearings, gears
  • Background in hands-on prototyping and working in machine shop environments
  • Strong writing and communication skills (especially for proposals or technical reports)
  • Experience mentoring or leading small engineering teams
Benefits & Perks
  • Flexible PTO: We value work-life balance and encourage time to rest and recharge.
  • Health & Wellness: Comprehensive medical, dental, and vision coverage—you choose what works best for you.
  • Equity Participation: Permanent employees 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%
  • 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.

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