Simulation Engineer

First Search Inc.; Bloomfield (CT); On-site; USD 120,000 - 190,000; Full time

Job summary

LiquidPiston is seeking a Senior Engine Sealing Engineer to lead the sealing design for rotary engines, including Apex and Face Seals. You will apply tribology, materials science, and dynamic simulation to improve durability and performance under demanding conditions.

The role requires hands-on testing, collaboration with manufacturing and engineering teams, and strong communication of complex results to stakeholders. A strong background in high-temperature engine components is essential.

Qualifications

• Bachelor's degree in Mechanical Engineering or related field; Master’s preferred.
• 5+ years in the design, development, and validation of ICE power cylinder components.
• Proficiency with advanced simulation tools such as FEA/CFD and ring dynamics software.
• Deep understanding of high-temperature materials science and coatings.

Responsibilities

• Lead rotary engine sealing system design, including Apex and Face Seals.
• Contribute to journal bearing design, material selection, and optimization.
• Apply tribology to minimize friction, optimize lubrication, and mitigate wear.
• Develop 1D/3D dynamic models to analyze seal motion and leakage.
• Specify and qualify materials for high-temperature, high-pressure contact.
• Utilize FEA to assess thermal distortion and structural integrity of seals.
• Design and analyze engine test plans focusing on seal performance and durability.
• Troubleshoot sealing-related engine performance issues from dyno tests.
• Communicate findings clearly to stakeholders.

Skills

Tribology

Dynamic simulation

Mechanical design

Materials science

Problem solving

Education

Bachelor's degree + Master’s preferred

Tools

FEA/CFD software

Ring Dynamics software

Job description

Location: Bloomfield, CT. Onsite 5 days.

Our client, LiquidPiston, is looking for a Simulation Engineer- (Bearings & Seals),

About Client:

At LiquidPiston, we're redefining what's possible in internal combustion. Our patented X-Engine architecture delivers a lighter, smaller, and more efficient solution compared to traditional engines - enabling new capabilities across aerospace, defense, and clean power generation. We're not just building engines - we're pushing the boundaries of innovation in power and propulsion. As part of our team, you'll work alongside passionate engineers, designers, and researchers committed to solving hard problems and bringing cutting‑edge technology to life. If you're excited about clean‑sheet engine design, real R&D challenges, and the opportunity to make a direct impact in a small, agile team - this is your chance to help build something truly revolutionary.

Position Overview:

The Senior Engine Sealing Engineer will lead the design, development, and validation of rotary engine sealing systems and related components. This role involves applying advanced principles of tribology, materials science, and dynamic simulation to optimize seal performance, durability, and reliability under demanding operating conditions. The position requires close collaboration with manufacturing and engineering teams, hands‑on problem solving during testing, and the ability to communicate technical findings effectively. The ideal candidate will have deep expertise in high‑temperature engine components, strong analytical skills, and a proven track record in independent and collaborative R&D projects.

Responsibilities:

• Rotary Seal Development: Lead the design and refinement of the rotary engine sealing system, including Apex Seals and Face Seals.
• Journal Bearing Design: Contribute to the design, material selection, and optimization of journal bearings. Analyze bearing loads, clearances, oil flow, and housing deflection to ensure hydrodynamic stability and durability.
• Tribology and Wear: Apply advanced principles of tribology to minimize friction, optimize lubrication, and predict/mitigate wear on seals and housing surfaces.
• Dynamic Simulation: Develop and utilize 1D/3D dynamic models to analyze seal motion, contact pressure, leakage, and flutter under various operating conditions (speed, temperature, load).
• Materials and Manufacturing: Specify and qualify materials appropriate for high‑temperature, high‑pressure sliding contact, and collaborate with manufacturing partners on component specifications.
• Thermal and Structural Analysis (FEA/CFD): Utilize Finite Element Analysis (FEA) to assess thermal distortion, structural integrity, and mechanical stress on sealing components and their supporting structures (rotor, housing).
• Validation and Testing: Design, execute, and analyze engine test plans focused on seal performance, durability and friction.
• Troubleshooting: Diagnose and resolve complex sealing‑related engine performance issues identified during dyno testing and field trials.
• Communicate findings clearly and effectively to stakeholders.

Requirements:

• Bachelor's degree in Mechanical Engineering, Materials Science, or a related field (Master's preferred).
• 5+ years of experience in the design, development, and validation of ICE power cylinder ring packs and cylinder bores.
• Proficiency with advanced engineering simulation tools (e.g., FEA/CFD, and specialized Ring Dynamics software).
• Deep understanding of high‑temperature materials science and their application in severe engine environments.
• Experience with advanced surface treatments or coatings for friction reduction and wear resistance.
• Proven ability to work independently and collaboratively in a fast‑paced R&D environment.