Process Engineer at Arborenergy

Arborenergy logo
Arborenergy

Process Engineer

us flag
United States

On-site

Full Time

#Engineering

#Mechanical Engineering

#Design

#Project Management

Arborenergy is looking for a Process Engineer

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About Us: 
At Arbor, we are  developing a scalable and low-cost approach to Biomass Carbon Removal and Storage (BiCRS) based on modern rocket engine technology. BiCRS is a carbon dioxide removal (CDR) approach that uses biomass to remove CO₂ from the atmosphere and store it permanently underground, while ensuring food security, rural livelihoods, and biodiversity are not affected. Our team brings together a deep passion for science, technology, community, and strategy required to make low-cost, high-quality carbon removal a reality. Our modular technology leverages compact gasification, oxy-combustion with a supercritical CO₂ cycle, and high-pressure turbo-expansion to convert abundant forestry waste biomass into clean electricity, water, and high-purity CO2, capturing and sequestering all emissions from the process. 
Two years into our journey we: assembled a world-class team of engineers and scientists, raised over $30M from top deeptech investors, pre-sold our first 2000 tons of carbon removal, and are designing our first plant to demonstrate our novel technology capable of generating carbon-negative energy.
Our Values: 
Foster Planetary Partnership, Lead with Love, and Explore the Uncharted. Want to know what these mean to us? Just ask.

What you’ll do:
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. Typical deliverables include:
- Design Basis
- Process Flow Diagrams (PFDs)
- Heat and Material Balances (HMBs)
- Piping and Instrumentation Diagrams (P&IDs)
- Line sizing and line lists
- Equipment sizing and specification of pressure vessels, heat exchangers, pumps, control valves, etc.
- Instrument specifications for common instrumentation like temperature, pressure, flow, and level
- Pressure relief load calculations and relief valve sizing
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, and troubleshooting. Some specific activities that you will support are:
- Process hazard analysis (PHA) and HAZOPs
- Conceptual and feasibility studies and supporting cost estimates
- Control narrative development
- Review of detailed piping and equipment design with multidisciplinary in-house experts
- Development of operating procedures
- Alarms review
As projects move into the detailed engineering and construction phases, you will be responsible for managing EPC process engineering efforts to ensure successful project execution.

Who you are:
  • Bachelor’s degree in chemical or mechanical engineering
  • 5+ years of process engineering experience
  • Excellent understanding of chemical engineering principles, and broad understanding of downstream discipline requirements (mechanical, civil, electrical, etc.)
  • Demonstrated ability to coordinate multidisciplinary engineering teams and deliver successful projects


  • It would also be great if you have:
  • Experience in a startup or agile development environment
  • Hands-on field troubleshooting and/or operations experience
  • Experience in power generation, gasification, supercritical CO2, or other high pressure (100+ bar) system design
  • Professional Engineer (PE) license


  • Arbor is an equal opportunity employer.  Building a global solution to this global problem will require humans of all varieties to contribute diverse ideas and experiences.   That’s why we’ve put recruiting, hiring and retaining individuals from underrepresented groups at the top of our priority list.
    We encourage you to apply if you identify as Black, Native Hawaiian or Pacific Islander, American Indian or Alaskan Native, Hispanic or Latino, LGBTQ+ – or with any other underrepresented group – even if you don’t tick all the boxes in the description above. We never discriminate on the basis of race, religion, national origin, gender identity or expression, sexual orientation, age, or marital, veteran, or disability status. 
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