Senior Power Electronic Engineer

LiquidPiston, Inc.; Suffield (CT); On-site; USD 120,000 - 180,000; Full time

Benefits offered by this job

PTO

Health & Wellness

Equity Participation (RSUs)

401(k) Match

Career Growth

Job summary

LiquidPiston, Inc. is seeking a Senior Power Electronics Engineer to own hardware from concept through production in a fast-growing startup environment.

The role is onsite in Bloomfield, CT, with relocation to Suffield, CT planned for late 2026. You will design, validate, and integrate power electronics for advanced engines and generator systems, collaborating with multi-disciplinary teams to ship robust solutions.

Qualifications

• BS or MS in Electrical Engineering or related field.
• Hands-on experience designing power electronics hardware.
• Experience with converters, inverters, motor drives, or high-current/high-voltage systems.
• Lab testing, prototype integration, and failure analysis experience.
• Thermal, PCB layout, EMI/EMC, reliability, and manufacturability considerations.
• Experience with external vendors or contract manufacturers.
• Soldering, rework, instrumentation, and troubleshooting in lab.
• Ability to work across disciplines in a fast-paced small-team setting.
• Self-motivated with strong problem-solving and ownership mindset.

Responsibilities

• Design, simulate, prototype, debug, and improve power electronics hardware for engine and generator systems.
• Develop converters, inverters, motor drives, power distribution, and battery interfaces.
• Perform hands-on hardware bring-up, testing, validation, rework, and root-cause analysis.
• Address EMI/EMC, reliability, manufacturability, and component failures.
• Collaborate with electrical, mechanical, embedded controls, and test engineers.
• Oversee external vendors and contractors, reviewing designs and resolving issues.
• Execute rapid prototype development, bench testing, and in-house troubleshooting.
• Contribute to related electrical engineering tasks, including engine controls.
• Support product lifecycle with continuous improvement activities.

Skills

Power electronics

Converters & Inverters

Thermal management

PCB layout

Vendor management

Soldering

Education

BS or MS in Electrical Engineering

Tools

Altium

OrCAD

Job description

Senior Power Electronics Engineer - LiquidPiston

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 revolutionizing combustion engine technology through the development of advanced rotary engines and integrated hybrid power systems. Our innovative designs aim to dramatically improve efficiency, reduce size and weight, and enable cleaner, more compact power solutions across defense, aerospace, and commercial sectors.

Position Overview

This role is ideal for someone who enjoys owning hardware from concept through production. While power electronics is a major part of the job, this is not a narrowly scoped "design one converter for a year" role. The right candidate is excited by the broader challenge of building reliable, high-performance products in a small-company environment where priorities evolve quickly and engineers wear multiple hats.

Key Responsibilities

• Design, simulate, prototype, debug, and improve power electronics hardware for advanced engine and generator systems
• Develop and support converters, inverters, motor drives, power distribution systems, battery interfaces, and related hardware
• Perform hands-on hardware bring-up, troubleshooting, validation, rework, and root-cause analysis of electrical and thermal failures
• Address real-world hardware challenges including EMI/EMC issues, component failures, manufacturability concerns, and reliability improvements
• Work closely with electrical, mechanical, embedded controls, and test engineers to develop fully integrated products
• Oversee external vendors and contractors, including reviewing designs, identifying issues, and resolving integration or quality problems
• Execute rapid prototype development, bench testing, and in-house troubleshooting to support development timelines
• Contribute to related electrical engineering efforts beyond core PE, including engine controls, genset controls, instrumentation, wiring, and general EE tasks
• Support iterative product development and continuous improvement activities throughout the product lifecycle
• Operate effectively in a fast-paced small-company environment where priorities may shift and engineers are expected to take broad ownership

Required Qualifications

• BS or MS in Electrical Engineering or related field
• Strong hands-on experience designing and developing power electronics hardware
• Experience with converters, inverters, motor drives, high-current/high-voltage systems, or related power electronics applications
• Practical experience with hardware debugging, lab testing, prototype integration, and failure analysis
• Strong understanding of real-world electrical engineering tradeoffs including thermal management, PCB layout, EMI/EMC, reliability, and manufacturability
• Experience working with external vendors, contract manufacturers, or third-party design firms
• Comfortable performing hands-on lab work including soldering, rework, instrumentation, and troubleshooting
• Ability to work across disciplines and contribute to broader electrical and system-level engineering challenges
• Adaptable, self-motivated, and comfortable working in a highly collaborative small-team environment
• Strong problem-solving skills and a demonstrated ability to drive hardware issues to resolution quickly and effectively
• Passion for building and improving real-world hardware products

Preferred Qualifications

• Experience with weight- and efficiency-critical designs (e.g., aerospace, defense, UAVs).
• Background in hybrid power systems, gensets, and MIL-STD compliant systems (e.g., AMMPS).
• Knowledge of CANBUS/MODBUS communication protocols.
• Hands-on experience with PCB layout and design tools such as Altium or OrCAD.
• Firmware development experience (C/C++ preferred).
• Project management skills with experience coordinating across teams and with external stakeholders.

Benefits & Perks

• PTO: We value work-life balance and encourage time to rest and recharge.
• 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.