Sr. Mechanical Engineer (Gasification)

Posted 2 Days Ago
Be an Early Applicant
El Segundo, CA, USA
In-Office
150K-175K Annually
Senior level
Energy • Renewable Energy
The Role
Own the development, procurement, assembly, testing, operation, and optimization of biomass gasification, solids handling, and feedstock pretreatment systems. Design high-pressure equipment, create models and engineering documentation, solve electro-mechanical, thermal, and fluid-system challenges, manage assembly BOMs, and support product development from concept through validation. The role requires collaboration across departments in a hands-on experimental R&D environment.
Summary Generated by Built In
About Us

At Arbor Energy & Resources Corporation ("Arbor Energy"), we’re creating technology to power our lives while protecting the planet that sustains them.  Our advanced power systems deliver clean, reliable baseload electricity with zero operating emissions—modular, fuel-flexible, and engineered for the realities of today’s energy demand. At the core is a supercritical CO₂ turbine with integrated carbon capture, designed to bring carbon-neutral power online quickly at meaningful scale. 

Our team includes aerospace engineers, combustion experts, and systems thinkers with a shared goal: to build technology worthy of the world we want to live in. While many of us began our journeys looking to the stars, we’re applying that expertise here at home to deliver dependable, emission-free baseload power and a future of lasting abundance.  

If you share our values and are drawn to rigorous work with lasting impact, we’d love to learn more about you. Come build what the future will run on.

Steward our planet: We build for tomorrow, ensuring every bolt we tighten and every hand we lend leaves our environment stronger than we found it.

Lead with Love: We champion the success of our people, partners, and planet, nurturing excellence through camaraderie and rigor.

Explore the Uncharted: We embrace the unknown with curiosity, using courage and discipline to transform uncertainty into opportunity.

Role Overview

At Arbor Energy & Resources Corporation (Arbor Energy), we’re creating technology to power our
lives while protecting the planet that sustains them. Our advanced power systems deliver clean,
reliable baseload electricity with zero operating emissions—modular, fuel-flexible, and engineered
for the realities of today’s energy demand. At the core is a supercritical CO₂ turbine with integrated
carbon capture, designed to bring carbon-neutral power online quickly at meaningful scale.

Our team includes aerospace engineers, combustion experts, and systems thinkers with a shared
goal: to build technology worthy of the world we want to live in. While many of us began our journeys
looking to the stars, we’re applying that expertise here at home to deliver dependable, emission-free
baseload power and a future of lasting abundance.
If you’re drawn to rigorous work with lasting impact, we’d love to hear from you. Come build what the
future will run on.

We are seeking a Sr. Mechanical Engineer (Gasification) to take ownership of the development, testing, and
optimization of our novel biomass gasification systems, solids feed and removal systems, and
feedstock pretreatment systems to enable reliable, high efficiency conversion as we scale from
demonstration to pilot and beyond. As a core member of a small, hands-on gasification team, you’ll
guide daily operations, exe

Responsibilities
  • Execute design, procurement, assembly, testing and operation of high-pressure solids feed and removal hardware. 
  • Contribute to 3D modeling, structural analysis, fabrication drawings and PFD’s / fluid P&ID’s as well as test plans and procedures. 
  • Find robust, cost-effective solutions to solve Arbor’s electro-mechanical, thermal, and fluid system design problems. 
  • Manage large assembly BOMs and work across departments to deliver project results. 
Requirements
  • Bachelor’s degree in Mechanical, Aerospace, Chemical Engineering, or related field. 
  • 7+ years of experience in combustion system design, analysis, and testing. 
  • Experience with electro-mechanical and/or chemical conversion systems. 
  • Strong understanding of thermodynamics, fluid mechanics, and heat transfer. 
  • Hands-on experience with high-temperature and pressure equipment. 
  • Demonstrated ability to own product lifecycle from conceptual design to validation. 
Preferred Qualifications
  • Master's degree in Mechanical, Aerospace, Chemical Engineering, or related field. 
  • Experience with biomass or solids conveyance and feeding systems. 
  • Knowledge of chemical kinetics and fuel property effects on combustion behavior. 
  • Programming or scripting skills for data reduction and automation (Python, MATLAB, or similar). 
  • Experience working in startup or experimental R&D environments. 
Salary

$150K - $175K a year, subject to applicant’s skills, qualifications, and experience 

Compensation & Benefits
  • Stock options 
  • Medical, dental, and vision insurance (Arbor covers 90% for employees) 
  • Basic life insurance fully covered 
  • Health savings account (HSA) with matching 
  • Flexible savings account (FSA) 
  • Unlimited PTO   
  • 12+ company holidays, including Earth Day!   
  • 401(k) 
  • Commuter benefits 
  • Annual learning and development stipend 
  • And more! 
Our Commitment

Arbor Energy is proud to be an equal opportunity employer. We evaluate qualified applicants without regard to race, religion, national origin, gender identity or expression, sexual orientation, age, marital or veteran status, disability, or any other protected characteristic under applicable law. Solving global energy challenges requires a wide range of perspectives and experiences, and we are committed to building a team that reflects the world we serve.

Our hiring process is designed to be accessible, fair, and focused on the work that matters most for this role. Reasonable accommodations are available throughout the hiring process and employment—please let us know if you need one.

Skills Required

  • Bachelor's degree in Mechanical, Aerospace, Chemical Engineering, or a related field
  • 7+ years of experience in combustion system design, analysis, and testing
  • Experience with electro-mechanical and/or chemical conversion systems
  • Strong understanding of thermodynamics, fluid mechanics, and heat transfer
  • Hands-on experience with high-temperature and high-pressure equipment
  • Ability to own product lifecycle from conceptual design through validation
  • Master's degree in Mechanical, Aerospace, Chemical Engineering, or a related field
  • Experience with biomass or solids conveyance and feeding systems
  • Knowledge of chemical kinetics and fuel property effects on combustion behavior
  • Programming or scripting skills for data reduction and automation using Python, MATLAB, or similar
  • Experience in startup or experimental R&D environments
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The Company
HQ: Los Angeles, CA
Year Founded: 2022

What We Do

At Arbor, we’re sustainably powering the present while erasing emissions of the past. Our innovative system transforms organic waste into clean, reliable electricity while capturing carbon dioxide at scale. Founded by space tech veterans who pivoted from building technology to explore new planets to protecting our own, Arbor leverages cutting-edge aerospace technology to tackle climate change. Our mission is to bring gigawatts of clean, dependable baseload power online while removing gigatons of legacy carbon emissions. Earth is the most important spaceship we’ll ever have, and we’re dedicated to restoring its balance. Drawing on our team’s deep aerospace expertise, we’ve created a power system that meets today’s demands while repairing yesterday’s damage. Arbor’s engine, fueled by organic waste, improves on Bioenergy with Carbon Capture and Storage (BECCS) using advancements in oxy-combustion, supercritical turbomachinery, and additive manufacturing. The system turns waste—like overgrown brush, crop residues, and food waste—into clean power, reducing wildfire risks and landfill emissions. The captured CO2 is permanently stored deep underground, where it mineralizes into rock, ensuring it never returns to the atmosphere. At Arbor, we envision a future where human progress and environmental stewardship work in harmony to power our world and bring the planet into balance. We’re proudly backed by climate-focused investors including Gigascale Capital, Voyager Ventures, Lowercarbon Capital, and Cantos Ventures.

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