System Integration Engineer Jobs in Connecticut (NOW HIRING)

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

LiquidPiston is reinventing the internal combustion engine. Their 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’re seeking a Mechanical Integration Engineer as a part of the genset application development team to play a key role in the design, integration, and development of innovative gensets based on our advanced rotary engines. This is a hands‑on, high‑impact engineering role ideal for someone with a deep understanding of engine systems and packaging, a passion for innovation, and a strong background in mechanical design and simulation.

• Generate and evaluate new ideas to improve packaging, durability, and manufacturability and reduce the weight of LiquidPiston’s rotary engine‑based gensets.
• Create detailed part and assembly models using SolidWorks.
• Lead early‑stage genset 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.
• Work from requirements document to find appropriate components for assembly.
• Aid senior engineers in developing requirements for new projects.
• Work with electrical engineering team to package electrical systems into modules.
• Select and coordinate with suppliers, contractors and machine shops—from RFQ to incoming inspection.
• Support and oversee the genset’s assembly processes; contribute to hands‑on prototyping.
• Participate in genset testing and interpret results to inform design iterations.
• Create and maintain standardized procedures for system design, analysis, and documentation.
• Develop and implement subsystem test plans in conjunction with technicians.
• Present technical ideas and results clearly to both technical and non‑technical stakeholders.
• Maintain a collaborative, proactive, and positive engineering mindset.

• BS or higher in Mechanical Engineering.
• 2+ years of experience in engine component/system design and simulation.
• Experience in integrating multiple subsystems into a full package.
• Strong understanding of internal combustion engine packaging and design for manufacturing.
• Proficient in SolidWorks (modeling and assemblies).
• Experience with mechanical simulation tools (e.g., ANSYS).
• Ability to work independently, solve problems, and communicate results effectively.

• Demonstrated previous experience in tight space packaging (engine bays, gensets, etc.).
• Familiarity with packaging and integration of electrical components and design of electronic enclosures.
• Previous experience with design for MIL‑STD‑810 and MIL‑STD‑1472 conformity.

• 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 to share in our success.
• 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.

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 forward.

Equal Opportunity Employer: LiquidPiston, Inc. is proud to be an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, sexual orientation, gender identity, national origin or protected veteran status and will not be discriminated against on the basis of disability.