---
title: 'Senior Full Stack Engineer at Mill'
canonical: 'https://feeny.ai/job/senior-full-stack-engineer-mill-san-bruno-sqtn1rrmfkbk'
type: 'job'
last_seen: '2026-09-11'
---

# Senior Full Stack Engineer at Mill

- **Company:** Mill
- **Location:** San Bruno, CA
- **Posted:** 2026-07-30
- **Last confirmed live:** 2026-09-11
- **Apply:** https://job-boards.greenhouse.io/mill/jobs/4720034005

## 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.

Job Summary

We are seeking a highly skilled Senior Full Stack Engineer to join our engineering team. This is an individual contributor technical leadership role reporting to the Director of Software Engineering. You will drive the technical direction of your project area and write high-quality code across the stack, while mentoring engineers around you.

We've moved away from a frontend/backend split at Mill: every engineer here works full stack, typically leaning toward one side based on strength and interest, and teams are organized around projects rather than layers of the stack. You'll likely anchor on a given project for a sustained stretch — enough to build real depth and avoid constant context-switching — with real opportunities to rotate onto new projects and parts of the codebase over time.

AI-assisted development is core to how we build software, not a peripheral tool. We expect fluency with tools like Claude Code as part of your daily workflow, and as a senior level engineer, a role in raising the bar for how the team uses them.

## Key Responsibilities

Technical Leadership

- Lead the technical design and execution of full-stack web applications, ensuring alignment with business objectives and technical standards
- Design and implement scalable, secure, and efficient full-stack solutions
- Own estimates and technical delivery plans and surface risks early

Development and Implementation

- Craft elegant, documented, and sustainable code spanning our full web stack, remaining ready to provide support for our native mobile environment when required
- Develop and optimize API and user interfaces
- Use AI-assisted development tools fluently as a standard part of how you write, review, and ship code

## Team Collaboration

- Mentor junior engineers, fostering a culture of continuous learning and improvement.
- Conduct code reviews and provide constructive feedback to maintain high coding standards.
- Communicate technical constraints and tradeoffs clearly to your project's product manager.

Quality Assurance

- Champion best practices in testing, CI/CD, and deployment
- Troubleshoot and resolve technical issues, ensuring minimal downtime and disruption
- Monitor and optimize application performance

Required Qualifications

- 5+ years of professional experience in software development with a focus on full-stack development
- Deep experience with modern frontend frameworks (e.g. React, Vue, Angular, or SvelteKit) — we use SvelteKit at Mill but recognize that strong React/Vue/Angular experience is highly transferable, especially with AI-assisted tooling, so prior SvelteKit experience is preferred but not required
- Strong backend experience with TypeScript/Node.js; comfort with serverless architectures (e.g. AWS Lambda)
- Solid understanding of SQL and NoSQL database systems
- Experience with cloud platforms (we run AWS) and modern deployment workflows
- Fluency with AI-assisted development workflows (e.g. Claude Code, Copilot) as a genuine part of your day-to-day practice — not occasional or exploratory use
- Strong software architecture fundamentals (e.g. microservices, serverless)
- Excellent problem-solving and debugging skills

## Preferred Qualifications

- Experience with our specific stack: SvelteKit (web, deployed on Vercel), React Native (mobile), AWS Lambda with CDK (TypeScript) and Middy
- Familiarity with DevOps practices and infrastructure as code (e.g. Terraform, CDK)
- Strong understanding of security best practices in web development
- Prior experience working at a hardware company, particularly collaborating with firmware teams — we build physical devices, not just software, and comfort working alongside hardware/firmware engineers is a plus

## Key Attributes

- Strong communication and interpersonal skills — especially the ability to partner closely with product without owning the roadmap
- Comfortable holding technical ownership of a project over a sustained period, while staying energized by the opportunity to rotate onto new problems periodically
- Proactive, self-driven, and eager to take ownership of projects
- Passion for mentoring and developing engineering talent

The estimated base salary range for this position is $185k to $210k, 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.

## 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)

## Other roles at Mill

- [Marketing Lead, Growth & Acquisition](https://feeny.ai/job/marketing-lead-growth-acquisition-mill-san-bruno-7grwgx8mfy93) — San Bruno, CA
- [Senior Integrated Marketing Manager (Contract)](https://feeny.ai/job/senior-integrated-marketing-manager-contract-mill-san-bruno-8fevjdmp9zyx) — San Bruno, CA
- [Operations Program Manager - Manufacturing](https://feeny.ai/job/operations-program-manager-manufacturing-mill-san-bruno-nm95qw4htt4t) — San Bruno, CA
- [Feed Manufacturing Operator](https://feeny.ai/job/feed-manufacturing-operator-mill-mukilteo-tt9rv27qbgak) — Mukilteo, WA
- [Data Engineer - Data Platform](https://feeny.ai/job/data-engineer-data-platform-mill-san-bruno-bg6gqvw17bt5) — San Bruno, CA
- [Sustaining Program Manager — Consumer](https://feeny.ai/job/sustaining-program-manager-consumer-mill-san-bruno-c2byw478cwfr) — San Bruno, CA
- [Electrical Engineering Intern, Summer 2026](https://feeny.ai/job/electrical-engineering-intern-summer-2026-mill-san-bruno-8kr7tqbpmd4f) — San Bruno, CA
- [Computer Vision Engineer](https://feeny.ai/job/computer-vision-engineer-mill-san-bruno-07pckkhsg0nf) — San Bruno, CA
- [Manufacturing Engineer](https://feeny.ai/job/manufacturing-engineer-mill-juarez-chihuahua-sasw74y3yky9) — Juarez Chihuahua, Mexico
- [Accounting Manager](https://feeny.ai/job/accounting-manager-mill-san-bruno-8nqbec80x2eg) — San Bruno, CA