We are seeking a Senior Process Engineer to develop and own process engineering deliverables for modular process units such as biomass gasification, oxy-combustion, supercritical CO2 power generation, CO2 purification and liquefaction, and wastewater treatment. As a process engineer at a fast-paced company developing novel technology, you’ll participate in a wide range of activities from conceptual studies through plant commissioning, startup, an...
We are seeking a Sr. Turbomachinery Aerodynamics Engineer to define operating characteristics and design high-performance flowpaths, airfoils, and inlet/outlet geometries for a supercritical CO₂-based power cycle. This role involves CFD modeling, aerodynamic optimization, and experimental validation to enhance turbomachinery efficiency and operability. The ideal candidate has expertise in compressible flow, turbomachinery aerodynamics, and cycle ...
We are looking for a proactive, detail-oriented Sr. Accountant to make a tangible impact in a dynamic, high-growth environment. You’ll play a critical role in driving process improvements, enhancing financial accuracy, and supporting Arbor’s operational efficiency. This is an onsite role in El Segundo. Arbor’s team of world-class engineers and scientists are developing a scalable, low-cost approach to Bioenergy with Carbon Capture and Storage (BE...
We’re looking for a Sr. 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. Arbor’s team of world-class engineers and scientists ar...
We are seeking a Sr. Mechanical Design Engineer to lead the design and analysis of rotors and casings for turbomachinery in a supercritical CO₂-based power cycle. This role involves conceptual design, assembly architecture selection, material selection, and structural analysis, ensuring high-performance, reliable operation under demanding conditions. The ideal candidate has expertise in bolted joint and seal design, finite element analysis (FEA),...
We are seeking a seasoned Program Manager/Systems Integration Architect to lead the development and integration of its first commercial demonstration plant. This role is ideal for a turbomachinery engineer with 10 years of experience in power generation or aerospace, including at least one clean-sheet product development program from concept to launch. You will own system-level requirements, architecture integration, cost/schedule oversight, and ...
We are seeking a Mechanical Design Engineer for our Combustion team to own the 3D design of high-temperature, high-pressure hardware from concept through fabrication. You’ll collaborate closely with combustion engineers, analysts, and test engineers to develop practical, test-ready systems. Your work will leverage metal additive manufacturing, precision machining, and algorithmic design techniques to push the boundaries of modern fabrication. Arb...
We are seeking a Mechanical Design Engineer to design and analysis of rotors and casings for turbomachinery in a supercritical CO₂-based power cycle. This role involves conceptual design, assembly architecture selection, material selection, and structural analysis, ensuring high-performance, reliable operation under demanding conditions. The ideal candidate has expertise in bolted joint and seal design, finite element analysis (FEA), and thermome...
We are seeking an Instrumentation Engineer to design, develop, and maintain instrumentation and control systems. Responsibilities include creating wiring and instrumentation drawings, maintaining instrumentation lists, managing instrumentation selection, configuring data and control systems, and supporting instrumentation/controls commissioning and troubleshooting. Ideal candidates have experience with industrial controls such as PLCs and high pe...
We are seeking a Senior Instrumentation Engineer to design, develop, and maintain instrumentation and control systems. Responsibilities include creating wiring and instrumentation drawings, maintaining instrumentation lists, managing instrumentation selection, configuring data and control systems, and supporting instrumentation/controls commissioning and troubleshooting. Ideal candidates have experience with industrial controls such as PLCs and h...
We are seeking a Mechanical Design Engineer to design, develop, and oversee mechanical and electro-mechanical systems. In this role, you will use FEM software, CAD tools, and hand calculations to create and refine designs, generate technical drawings, and lead skilled technicians in building and testing systems. The ideal candidate has experience with hazardous systems, control systems, and industry standards like ASME and AISC. Arbor’s team of w...
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 tec...
