Mechanical Design Engineer (Combustion)

Reposted 18 Days Ago
Be an Early Applicant
El Segundo, CA
In-Office
130K-150K Annually
Mid level
Energy • Renewable Energy
The Role
The Mechanical Design Engineer will lead the 3D design and development of high-temperature hardware, collaborating with various engineers and applying additive manufacturing techniques.
Summary Generated by Built In
At Arbor, 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 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. 

Responsibilities

  • Lead detailed 3D modeling of complex components and assemblies. 
  • Apply Design for Additive Manufacturing (DfAM) principles to optimize performance, cost, and manufacturability. 
  • Create complete drawing packages with GD&T, assembly documentation, and bill of materials (BOMs). 
  • Translate engineering requirements into practical, buildable designs. 
  • Generate work instructions and collaborate with technicians during builds and test campaigns. 
  • Continuously iterate based on feedback from analysis, testing, and fabrication. 

Requirements

  • Bachelor’s degree in Mechanical, Aerospace, or a related Engineering discipline. 
  • 3+ years of experience in mechanical design of high-performance systems. 
  • Proficiency in CAD software (Siemens NX preferred; others such as SolidWorks or Creo also acceptable). 
  • Experience producing fully detailed drawing packages including GD&T and manufacturing specs. 
  • Experience with additive manufacturing and DfAM principles. 
  • Understanding of additive constraints: overhang angles, support strategy, build orientation, powder removal, etc. 

Preferred Qualifications

  • Exposure to material behavior and surface finish considerations in high-temperature AM alloys (e.g., Inconel 625/718, Hastelloy, Haynes). 
  • Familiarity with FEA or fluid/thermal analysis workflows. 
  • Prior experience in a fast-paced, hands-on R&D or startup environment. 
  • Exposure to combustion systems, high-temperature materials, or pressure vessels. 

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! 

Arbor 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.

Top Skills

3D Cad Software
Creo
Siemens Nx
Solidworks
Am I A Good Fit?
beta
Get Personalized Job Insights.
Our AI-powered fit analysis compares your resume with a job listing so you know if your skills & experience align.

The Company
HQ: Los Angeles, CA
0 Employees
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.

Similar Jobs

Capital One Logo Capital One

Relationship Manager, Business Cards & Payments - Acquisitions (Greater Sacramento)

Fintech • Machine Learning • Payments • Software • Financial Services
Hybrid
Sacramento, CA, USA
55000 Employees
100K-135K Annually

Capital One Logo Capital One

Senior Platform Engineer

Fintech • Machine Learning • Payments • Software • Financial Services
Hybrid
8 Locations
55000 Employees
116K-159K Annually

Capital One Logo Capital One

Applied Researcher I

Fintech • Machine Learning • Payments • Software • Financial Services
Hybrid
5 Locations
55000 Employees
215K-267K Annually

Capital One Logo Capital One

Sr Director, Product Management - Customer Experience Foundations

Fintech • Machine Learning • Payments • Software • Financial Services
Hybrid
5 Locations
55000 Employees
240K-329K Annually

Similar Companies Hiring

Ekotrope Thumbnail
Software • Information Technology • Greentech • Energy • Cloud
Boston, MA
29 Employees
UL Solutions Thumbnail
Software • Renewable Energy • Professional Services • Energy • Consulting • Chemical • Automotive
Chicago, IL
15000 Employees
Energy CX Thumbnail
Utilities • Professional Services • Greentech • Financial Services • Energy • Consulting • Business Intelligence
Chicago, IL
108 Employees

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account