---
title: 'Product Design Engineering Intern, Summer 2026 at Mill'
canonical: 'https://feeny.ai/job/product-design-engineering-intern-summer-2026-mill-san-bruno-ez8hxfp33pr8'
type: 'job'
last_seen: '2026-09-11'
---

# Product Design Engineering Intern, Summer 2026 at Mill

- **Company:** Mill
- **Location:** San Bruno, CA
- **Posted:** 2026-03-17
- **Last confirmed live:** 2026-09-11
- **Apply:** https://job-boards.greenhouse.io/mill/jobs/4674154005

## Job description

Mill is a waste prevention technology company reimagining what it means to eliminate waste, starting with food. We build smart systems and infrastructure for homes, businesses, and municipalities that transform food scraps from landfill-bound waste into valuable resources, including chicken feed. Tens of thousands of Mill’s residential food recyclers are already helping households divert millions of pounds of food scraps every year, paving the way for our upcoming launch of Mill Commercial—the industry’s first end-to-end solution for managing, understanding, and preventing food waste in commercial environments (e.g. grocery, restaurants, food services). At Mill, we are passionate about building easy-to-use, beautifully designed technologies that keep food in the food system and out of landfills.

As a Product Design Engineering intern at Mill, you’ll be working with a tight-knit, fast-paced team on a novel consumer product. Your day-to-day will include hands-on work with hardware components and lab equipment as well as CAD design tools like NX. Since we’re a small team, your work and learning will span design, tooling, and testing as we push towards launch. This internship is for someone who wants to learn and be creatively challenged.

## Responsibilities

- Work closely with the Mill cross functional team on the design and validation of new products.
- Develop prototypes and execute tests in order to drive design towards mass production maturity.
- Support 3D CAD design and 2D documentation.
- Support engineering build activities, partnering with suppliers and CMs to troubleshoot and resolve manufacturing quality issues.

## Minimum Qualifications

- BS, MS or PhD in Mechanical Engineering (obtained or in progress)
- Working knowledge of manufacturing processes and material selection for the design and development of electro-mechanical systems.
- Proficient in 3D CAD (prefer Nx).
- Proficient in a variety of rapid prototyping methods.
- Strong analytical and communication skills.

## Preferred Qualifications

- Experience with simulation tools (FEA and thermal) and statistical analysis methods.
- Experience with designing for high volume manufacturing (DFM/DFA).

The estimated base hourly range for this position is $35 to $45, which does not include the value of benefits or a potential equity grant. A wide range of factors are considered in making compensation decisions, including but not limited to skill sets, market conditions, experience and training, licensure and certifications, and business and organizational needs. Applicants must be authorized to work for any employer in the U.S. We are unable to sponsor an employment visa for this role

## About Mill

## Company Overview
- **One-liner**: Mill makes it easy to keep food out of landfills with innovative, odorless food recycling solutions for homes, workplaces, and cities.
- **Entity Type**: Private (Series C)
- **Headquarters**: San Bruno, California, USA
- **Founded**: 2020
- **Founders**: Not publicly available (founded by a team from Nest Labs / Google, though specific names are not widely publicized)

## Core Business
- Primary industry: Environmental Services / Consumer Hardware & Software
- Target customers: B2C (homeowners), B2B (grocery and food service partners via Mill Commercial)
- Mission: To eliminate waste for good, starting with the food that ends up in landfills. The goal is to turn kitchen scraps into food for chickens, keeping food in the food system and out of landfills.

## Products & Services
- **Mill Food Recycler (Home)**: An odorless, effortless food recycling bin for the home. It uses intelligent tech to dehydrate and reduce food volume by 80% overnight. Users do not need to press a button; the device senses how much is added. The resulting grounds are shipped to Mill's small-farm partners for use as chicken feed. Type: Consumer Hardware + Service (subscription).
- **Mill Commercial**: A new solution for grocery stores and food service businesses to manage food waste at scale, leveraging the same core technology. Type: B2B Hardware + Service.

## Market Standing
- **Valuation/Market Cap**: Not disclosed
- **Total Funding**: $170.8M across 6 rounds [linkedin.com](https://www.linkedin.com/company/mill)
- **Key Metric**: 21,000,000+ pounds of food kept out of landfills [mill.com](https://www.mill.com/)
- **Notable Investors/Partners**: Prelude Ventures (led Series C), Climate Pledge Fund (Amazon), and others [linkedin.com](https://www.linkedin.com/company/mill)
- **Growth Signals**: 110 total employees [builtin.com](https://builtin.com/company/mill) (LinkedIn reports 548, likely including contractors/partners) [linkedin.com](https://www.linkedin.com/company/mill); 14 active job postings as of mid-2026; launch of Mill Commercial; headcount growth of +0.4% monthly [linkedin.com](https://www.linkedin.com/company/mill)

## Competitive Advantages
- **Hardware + Software Moat**: The combination of a custom hardware appliance, embedded firmware, and a computer vision AI engine creates a difficult-to-replicate system.
- **Network Effect**: The more users Mill has, the more food waste is diverted, strengthening their supply chain of grounds for chicken feed and their partnerships with farms.
- **Brand & Design**: A strong focus on industrial design and user experience (odorless, effortless, beautiful) differentiates it from compost pails and garbage disposals.
- **Climate Impact**: Directly addresses methane emissions from landfills (methane is 80x more potent than CO2), giving it a strong mission-driven narrative.

## Strategic Focus
- **Scaling the Home Business**: Expanding the subscriber base for the home food recycler.
- **Launching Mill Commercial**: Entering the B2B market with grocery and food service partners to capture waste upstream.
- **International Expansion**: Likely future focus, given the global scale of food waste.

## Why Work Here
- **Mission-Driven**: Employees are directly working on climate change, keeping food out of landfills.
- **Hybrid Work**: Hybrid work environment (typical time on-site: 2 days a week) [builtin.com](https://builtin.com/company/mill).
- **Culture**: Described as a mix of hardware, software, and AI engineering with a startup feel. Offers company equity, 401(K), generous parental leave, free snacks, and company-sponsored family events [builtin.com](https://builtin.com/company/mill).
- **Engineering Focus**: Heavy investment in hardware engineering (San Bruno) and software/AI (Computer Vision). Roles include Hardware Test Engineer, Senior Firmware Engineer, AI Engineer (Computer Vision), and Product Design Engineer [greenhouse.io](https://job-boards.greenhouse.io/Mill).
- **Employee Rating**: 3.4/5.0 on LinkedIn (23 reviews), with Culture rated 3.7 and Compensation rated 3.6 [linkedin.com](https://www.linkedin.com/company/mill).

## Sources
1. [mill.com](https://www.mill.com/)
2. [greenhouse.io](https://job-boards.greenhouse.io/Mill)
3. [builtin.com](https://builtin.com/company/mill)
4. [linkedin.com](https://www.linkedin.com/company/mill)

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