<div><span style="font-size:16px;">We’re looking for a Combustion Engineer to take ownership of the development, testing, and optimization of our biomass gasification reactor as we scale from demonstration to pilot and beyond. As a core member of a small, hands-on combustion team, you’ll guide daily operations, execute performance testing, and lead design improvements to ensure safe, reliable, and high-performing systems.</span></div><div><br></div><div><span style="font-size:16px;">Arbor’s team of world-class engineers and scientists are developing a scalable, low-cost approach to Bioenergy with Carbon Capture and Storage (BECCS) based on modern rocket engine technology. BECCS is a carbon dioxide removal (CDR) approach that uses biomass to produce energy and remove CO₂ from the atmosphere and store it permanently underground, while ensuring food security, rural livelihoods, and biodiversity are not affected. Our modular technology leverages the power density of supercritical CO2 to enable compact gasification, oxy-combustion, and high-pressure turbo-expansion to convert abundant waste biomass into clean electricity, water, and high-purity CO2, capturing and sequestering all emissions from the process.  Our team brings together a passion for science, technology, and global stewardship to make low-cost, high-quality carbon removal and baseload power a reality.</span></div><br><br><h3>Responsibilities</h3><ul><li>Serve as technical lead for the biomass gasification reactor, owning design, build, operation, and iteration.</li><li>Conduct and lead test campaigns, including planning, execution, and data analysis.</li><li>Operate and troubleshoot the gasification reactor during daily testing and development.</li><li>Guide system configuration and performance optimization efforts.</li><li>Own and execute feedstock sensitivity studies to assess system flexibility and robustness.</li><li>Drive continuous improvement through design changes and upgrades.</li><li>Collaborate cross-functionally to support system integration and scale-up.</li><li>Ensure safe operation of high-temperature, high-pressure thermochemical equipment.</li></ul><h3>Requirements</h3><ul><li>Bachelor’s degree in Mechanical, Aerospace, Chemical Engineering, or related field.</li><li>5+ years of experience in combustion system design, analysis, and testing.</li><li>Strong understanding of thermodynamics, fluid mechanics, and heat transfer.</li><li>Hands-on experience with high-temperature and pressure equipment.</li><li>Demonstrated ability to own product lifecycle from conceptual design to validation.</li><li>Willing to travel (up to 20%) to the test site in San Bernardino, CA, for operational activities and builds.</li></ul><h3>Preferred Qualifications</h3><ul><li>Advanced degree (M.S. or Ph.D.) with a focus on combustion science or energy systems.</li><li>Experience with supercritical CO₂ or high-pressure combustion systems.</li><li>Familiarity with low-emissions combustion strategies, such as lean premixed combustion or staged combustion.</li><li>Knowledge of chemical kinetics and fuel property effects on combustion behavior.</li><li>Proficiency in combustion modeling tools (e.g., CHEMKIN, Cantera, Fluent, or OpenFOAM).</li><li>Programming or scripting skills for data reduction and automation (Python, MATLAB, etc.).</li><li>Experience working in startup or experimental R&amp;D environments.</li></ul><h3>Benefits</h3><ul><li>Stock options</li><li>Medical, dental, and vision insurance (Arbor covers 90% for employees)</li><li>Basic life insurance fully covered</li><li>Health savings account (HSA) with matching</li><li>Flexible savings account (FSA)</li><li>Unlimited PTO  </li><li>12+ company holidays, including Earth Day!  </li><li>401(k)</li><li>Commuter benefits</li><li>Annual learning and development stipend</li><li>And more!</li></ul><br><div><span style="font-size:16px;">Arbor is an equal-opportunity employer.  We never discriminate on the basis of race, religion, national origin, gender identity or expression, sexual orientation, age, or marital, veteran, or disability status. Building a global solution to this global problem will require humans of all varieties to contribute diverse ideas and experiences, so we have put finding and hiring qualified individuals from underrepresented groups at the top of our priority list. </span></div>

<p>In order for humanity to progress and thrive, we must appreciate Earth as the spaceship it is. Our atmosphere, and the diverse ecosystems it sustains, are our vital life support system against an otherwise inhospitable space. Equipped with an astronaut mindset, we treat our natural resources as precious and human kindness as essential.</p>
<p>Arbor is developing a scalable and low-cost approach to reverse humanity&rsquo;s climate footprint, leveraging advanced rocket engine technology and Earth&rsquo;s own natural rhythms. We are designing, manufacturing, and operating systems that will restore balance to the planet and set the foundation for a global circular economy. Our technology converts waste into clean energy and fresh water, while permanently removing CO2 from the atmosphere. We're using the same technology developed to get humans off the Earth to now help us save it.</p>

Combustion Engineer

<div><span>We’re looking for a Combustion Engineer to take ownership of the development, testing, and optimization of our biomass gasification reactor as we scale from demonstration to pilot and beyond. As a core member of a small, hands-on combustion team, you’ll guide daily operations, execute performance testing, and lead design improvements to ensure safe, reliable, and high-performing systems.</span></div><div><br></div><div><span>Arbor’s team of world-class engineers and scientists are&nbsp;developing a scalable, low-cost approach to Bioenergy with Carbon Capture and Storage (BECCS) based on modern rocket engine technology. BECCS is a carbon dioxide removal (CDR) approach that uses biomass to produce energy and remove CO₂ from the atmosphere and store it permanently underground, while ensuring food security, rural livelihoods, and biodiversity are not affected. Our modular technology leverages the power density of supercritical CO2 to enable compact gasification, oxy-combustion, and high-pressure turbo-expansion to convert abundant waste biomass into clean electricity, water, and high-purity CO2, capturing and sequestering all emissions from the process.&nbsp;&nbsp;Our team brings together a passion for science, technology, and global stewardship to make low-cost, high-quality carbon removal and baseload power a reality.</span></div><br><br><h3>Responsibilities</h3><ul><li>Serve as technical lead for the biomass gasification reactor, owning design, build, operation, and iteration.</li><li>Conduct and lead test campaigns, including planning, execution, and data analysis.</li><li>Operate and troubleshoot the gasification reactor during daily testing and development.</li><li>Guide system configuration and performance optimization efforts.</li><li>Own and execute feedstock sensitivity studies to assess system flexibility and robustness.</li><li>Drive continuous improvement through design changes and upgrades.</li><li>Collaborate cross-functionally to support system integration and scale-up.</li><li>Ensure safe operation of high-temperature, high-pressure thermochemical equipment.</li></ul><h3>Requirements</h3><ul><li>Bachelor’s degree in Mechanical, Aerospace, Chemical Engineering, or related field.</li><li>5+ years of experience in combustion system design, analysis, and testing.</li><li>Strong understanding of thermodynamics, fluid mechanics, and heat transfer.</li><li>Hands-on experience with high-temperature and pressure equipment.</li><li>Demonstrated ability to own product lifecycle from conceptual design to validation.</li><li>Willing to travel (up to 20%) to the test site in San Bernardino, CA, for operational activities and builds.</li></ul><h3>Preferred Qualifications</h3><ul><li>Advanced degree (M.S. or Ph.D.) with a focus on combustion science or energy systems.</li><li>Experience with supercritical CO₂ or high-pressure combustion systems.</li><li>Familiarity with low-emissions combustion strategies, such as lean premixed combustion or staged combustion.</li><li>Knowledge of chemical kinetics and fuel property effects on combustion behavior.</li><li>Proficiency in combustion modeling tools (e.g., CHEMKIN, Cantera, Fluent, or OpenFOAM).</li><li>Programming or scripting skills for data reduction and automation (Python, MATLAB, etc.).</li><li>Experience working in startup or experimental R&amp;D environments.</li></ul><h3>Benefits</h3><ul><li>Stock options</li><li>Medical, dental, and vision insurance (Arbor covers 90% for employees)</li><li>Basic life insurance fully covered</li><li>Health savings account (HSA) with matching</li><li>Flexible savings account (FSA)</li><li>Unlimited PTO &nbsp;</li><li>12+ company holidays, including Earth Day! &nbsp;</li><li>401(k)</li><li>Commuter benefits</li><li>Annual learning and development stipend</li><li>And more!</li></ul><br><div><span>Arbor is an equal-opportunity employer.&nbsp; We never discriminate on the basis of race, religion, national origin, gender identity or expression, sexual orientation, age, or marital, veteran, or disability status. Building a global solution to this global problem will require humans of all varieties to contribute diverse ideas and experiences, so we have put finding and hiring qualified individuals from underrepresented groups at the top of our priority list.&nbsp;</span></div>

Combustion Engineer

About the Job

About the Company

Arbor Energy

Similar Jobs

Gasification Engineer

Gasification Engineer

Senior Mechanical Design Engineer - Fuel Systems

Senior Mechanical Design Engineer - Fuel Systems

Pyrometallurgical Process Engineer

Pyrometallurgical Process Engineer

Combustion Turbine Engineering Leader

Combustion Turbine Engineering Leader

Mechanical Design Engineer (Electrochemical Systems)

Mechanical Design Engineer (Electrochemical Systems)

Senior Process Modeling Engineer

Senior Process Modeling Engineer

Engineer, Thermal Systems

Engineer, Thermal Systems

Process Engineer - Furnace

Process Engineer - Furnace

Process Engineer - Carbon

Process Engineer - Carbon

Senior Mechanical Engineer

Senior Mechanical Engineer