---
title: 'Sr. CNC Machinist / Programmer at Arbor Energy'
canonical: 'https://feeny.ai/job/sr-cnc-machinist-programmer-arbor-energy-el-segundo-ax3bd522c4xp'
type: 'job'
last_seen: '2026-11-06'
---

# Sr. CNC Machinist / Programmer at Arbor Energy

- **Company:** Arbor Energy
- **Location:** El Segundo, CA
- **Posted:** 2026-11-05
- **Last confirmed live:** 2026-11-06
- **Apply:** https://job-boards.greenhouse.io/arborenergy/jobs/4480519009

## Job description

## 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 Senoir CNC Machinist with the abilities to manufacture cutting edge designs for our turbomachinery development.  Our 3d printed nickel-based materials allow us to push the boundaries of turbomachinery to its upper limits.  Arbors machine shop in El Segundo consists of a Bridgeport, machine lathe, and a Haas Vf3 with 5 axis capabilities. We will soon be expanding to another full 5 axis machine.  The Ideal candidate is someone with experience in tight tolerance machining and the ability to set up and run 3d printed parts.

This is an onsite opportunity in our El Segundo, CA office.

## Responsibilities

- Perform precision set-ups of various CNC and manual machines on state-of-the-art assets
- Ability to program using Mastercam
- Prioritize daily work to ensure high machine uptime across the shop.
- Experience with a CMM arm
- Manage cutting tools in CNC machines to ensure that machines have the needed cutting tools loaded and measured before they are called in upcoming programs
- Operate clean line equipment, laser part marking, and general part finishing requirements
- Operate and effectively use calibrated devices to ensure hardware leaving the machine shop is conforming and meets print requirements
- Perform CNC machine preventative maintenance on a weekly and monthly basis
- Maintain the shop in terms of chip bins, oils, greases, 5S and general upkeep activities
- Remain flexible in a fast-paced, ever-changing environment and support teammates however possible
- Complete work instructions and test plans to document needed data throughout each process

## Requirements

- 10+ years of experience operating CNC machinery
- Demonstrated ability to interpret drawings, GD&T.
- Experience in shop math, tooling technology, blueprint reading and measurement of parts
- Strong mechanical aptitude
- Strong interpersonal skills including, but not limited to, contributing to a team-oriented environment, balancing team and individual responsibilities
- Demonstrated ability using Mills: 5th axis

## Preferred Qualifications

- This role requires the ability to perform the essential functions listed below, with or without reasonable accommodation:
- Ability to lift up to 25 lbs unassisted
- Ability to stand, kneel, and move for extended periods
- Ability to perform repetitive movements, including bending, twisting, and using hands to handle or control tools and equipment
- Comfortable working in environments with varying noise levels
- Willing to travel for short trips as needed, up to 20% travel

## Benefits & Compensation

- Pre-IPO 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: $47.00 USD/hour. The base pay 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.

## About Arbor Energy

## Company Overview
- **One-liner**: Arbor Energy builds advanced, zero-emission baseload power systems using aerospace-derived oxy-combustion and supercritical CO₂ technology.
- **Entity Type**: Private (Series A, 2025)
- **Headquarters**: El Segundo, California, USA
- **Founded**: 2022
- **Founders**: Brad Hartwig (CEO/Co-Founder), Alicia Harmon O’Meara (COO), Andres Garcia-Clark (CTO/Co-Founder)

## Core Business
- **Primary industry**: Clean baseload power generation / Renewable energy
- **Target customers**: Utilities, industrial facilities, and large-scale energy buyers (B2B / Enterprise)
- **Mission statement**: “Human ambition in harmony with the planet” – delivering dependable, emissions-free baseload power at the scale the world requires.

## Products & Services
- **HALCYON (Product)**: Compact 25 MW turbine system combining oxy-combustion with a supercritical CO₂ power cycle. It provides firm, always-on baseload electricity with zero operating emissions. Fuel‑flexible (natural gas today; carbon‑negative fuels in the future) and designed for rapid deployment (under two years from contract to grid power). Systems can be linked into 100 MW+ plants. *(SaaS/Software? No – it’s a physical power system)*
- **ATLAS (Pilot)**: 1 MW test facility (built 2025) used to validate turbomachinery and system integration.
- **Carbon removal**: The process inherently captures and stores CO₂, enabling permanent carbon removal credits (e.g., agreements with Microsoft and Frontier).

## Market Standing
- **Valuation**: Not publicly available (private company)
- **Key Metric**: Total funding raised – **$109.5 million** (as of 2025)
- **Notable Investors/Partners**: Gigascale Capital, Voyager Ventures, Lowercarbon Capital, Cantos Ventures, U.S. Department of Energy, Microsoft, Frontier
- **Growth Signals**:
  - Named to *Fast Company*’s “Most Innovative Companies” (2026, sustainability category) and “Next Big Things in Tech” (2024)
  - *TIME*’s “Best Inventions of 2024”
  - Won the U.S. Department of Energy’s “Carbon Negative Shot” award (2024)
  - Signed a multi‑year carbon removal agreement with Microsoft and a $41 million offtake agreement with Frontier (2025)
  - Headcount grew 37.5% year‑over‑year to 52 employees; 9,118 LinkedIn followers (+56.8% YoY)

## Competitive Advantages
- **Aerospace DNA**: Founded by engineers from SpaceX, Blue Origin, and other rocket‑building teams – bringing high‑performance turbomachinery and systems engineering to clean energy.
- **Proprietary technology**: Oxy‑combustion + supercritical CO₂ cycle achieves high thermal efficiency in a small footprint, with zero emissions and low water use.
- **Speed & modularity**: Can go from contract to grid power in under two years; 25 MW modules scale to 100 MW+ plants quickly.
- **Integrated carbon removal**: Inherent CO₂ capture gives the company a dual revenue stream (power + carbon credits).

## Strategic Focus
- Accelerate pilot testing and development of HALCYON toward first commercial power in 2028.
- Scale manufacturing and secure additional offtake agreements.
- Expand fuel flexibility to run on carbon‑negative feedstocks (e.g., organic waste).
- Continue hiring across engineering, supply chain, and operations to support rapid growth.

## Why Work Here
- **Culture**: “Serious engineering, real responsibility, and problems worth solving.” Values include “Explore the uncharted,” “Lead with love,” and “Steward our planet.”
- **Work environment**: On‑site roles in El Segundo, CA (HQ) and San Bernardino, CA (test site). Not remote/hybrid based on current job listings.
- **Benefits**:
  - Equity grants and refreshes tied to impact
  - Medical, dental, vision (majority of costs covered for employee and family)
  - Unlimited PTO plus company holidays and year‑end winter break
  - Annual learning stipend ($?)
  - 401(k) and legal assistance
- **Team**: 52 employees (2025); strong technical team with 41% in engineering. Many hires from SpaceX, Blue Origin, Rivian, and other advanced hardware companies.

## Sources
1. [arbor.co – Company page](https://arbor.co/company/)
2. [arbor.co – Main site](https://arbor.co/)
3. [arbor.co – Careers page](https://arbor.co/careers/)
4. [Greenhouse – Arbor Energy jobs](https://job-boards.greenhouse.io/arborenergy/jobs/4236174009)
5. [LinkedIn – Arbor Energy](https://www.linkedin.com/company/arborenergy)

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