[Job Radar](https://jobradar.live/) / [Jobs](https://jobradar.live/ilanlar) / Sr. Mechanical Engineer (Gasification) Active On-site El Segundo, CA Posted · 02.10.2026 Greenhouse (US) # Sr. Mechanical Engineer (Gasification) Arbor Energy 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 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, execute testing, and lead design improvements to ensure safe, reliable, and high-performing systems. 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.  Benefits & Compensation  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!  Base Pay: $150,000 - $175,000 USD/year. The salary is subject to the applicant's skills, qualifications, experience, and geographic location. 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. This job was verified from Greenhouse (US). Applications are completed on the original source. 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