Engineer, Mechanical

• Own hardware components and sub-systems end-to-end—from concept through durability, manufacturability, serviceability, cost, weight, and validation—taking designs from CAD to hardware running on a test stand
• Design components and sub-systems that must survive extreme thermal environments, perform across a wide range of fuels (20+), and push the boundaries of metal additive manufacturing
• Create 3D models in NX and generate 2D prints with full GD&T per ASME Y14.5
• Perform design checking and print review to ensure tolerances, processes, and material specifications align with Hyliion's GD&T standards (ASME Y14.5)
• Conduct fluid and thermal systems design and optimization
• Perform structural and thermal FEA (ANSYS or equivalent)
• Install, calibrate, and read instrumentation for pressure, temperature, flow, strain, and acceleration in lab environments
• Execute prototype build, test, and validation cycles early and often to identify and resolve issues in the lab rather than the field
• Collaborate cross-functionally with design, electrical, software, and performance teams throughout the development process
• Lead and participate in technical reviews—presenting findings, driving trade-off discussions, and owning engineering decisions
• Support supplier identification, selection, and procurement for prototype and production hardware needs

• Bachelor's degree in Mechanical Engineering, Aerospace Engineering, or Electrical Engineering
• Master's preferred
• 0–5 years of engineering experience with a track record of designing and troubleshooting complex systems
• Background in automotive, aerospace, or medical device engineering is a strong plus
• Expert-level NX 3D CAD proficiency, including 2D print generation with full GD&T per ASME Y14.5
• Experience in fluid and thermal systems design and optimization
• Structural and thermal FEA experience (ANSYS or equivalent)
• Comfort in lab environments: installing, calibrating, and reading instrumentation for pressure, temperature, flow, strain, and acceleration
• Exposure to electrical systems (motors, inverters, batteries) is a bonus
• Self-starter who identifies what to test next and makes it happen
• Highly collaborative across mechanical, electrical, software, and test disciplines
• Clear communicator who can articulate complex trade-offs to diverse stakeholders and follow through on commitments
• Treats failed test results as data, not setbacks

Exposure to electrical systems (motors, inverters, batteries) is a bonus

• Medical Plans, with PPO or HDHP options
• Dental Plans, with buy-up option
• Vision Plan
• Life Insurance and Accidental Death & Dismemberment Plans, with buy-up options
• Short Term Disability, paid for by the company
• Long Term Disability, paid for by the company
• Flexible Spending Accounts (FSA)
• Health Savings Account (HSA)
• 401k/Roth 401k
• Voluntary Accident Plans
• Voluntary Critical Illness Plans
• Hospital Indemnity Plan