Mill is all about answering a simple question: how can we prevent waste? Less waste can save time, money, energy, maybe even our planet. And there’s no better place to start than food. Food waste is one of the most solvable climate problems facing us today. Plus, our trash really stinks. It’s gross, heavy, and our least favorite chore. At Mill we are striving to build a better environment for all, as we take on climate and kitchen change.

Join us as one of the first mobile app developer at Mill! As a founding member of the team, you will have the unique opportunity to not only design and build technology supporting our flagship product and service, but develop the culture and processes of the mobile app team as it grows.

We are seeking senior engineers with excellent technical judgment, who can make high level architecture decisions and are as comfortable building new features as designing infrastructure. If you are a creative problem solver with a passion for innovation and an entrepreneurial mindset, we want to hear from you.

You will have the opportunity to work on every stage of product development, from initial design to implementation to performance optimization. You will work closely with UX designers, product managers, and testers to devise elegant user experiences and bring Mill’s long term vision to life. An ideal candidate loves proactively seeking out problems and devising creative solutions, regardless of technology.

We also hope you are as excited about working on climate as we are!

Responsibilities:

  • Design, develop, and implement the Mill Mobile App, using React Native.
  • Collaborate with product managers, UX designers, and backend developers to define product requirements that meet customer needs with an elegant technical architecture.
  • Effectively work in a fast-paced start-up environment and distill product requirements into clear technical designs and project roadmap, supporting experiments and incorporating learnings into future iterations.
  • Proactively identify needs for internal automation, tools, and infrastructure and deliver user friendly, reliable solutions
  • Design for scalability, performance, and robustness
  • Engage effectively with third party firms by delivering clear specifications and requirements and managing execution
  • Collaborate with the rest of Mill’s engineering team in a hybrid model (at least 2 days in office/week)\

Minimum Qualifications:

  • B.S. in Computer Science or related field.
  • At least 5 years experience in mobile application software development.
  • At least 2 years experience with React Native.
  • Fluency in frontend state management practices, like Redux, Flux or similar.
  • A solid understanding of authentication patterns, including Cookies, JWT and OAuth amongst others.
  • Fluency in HTTP, Status Codes, Security Standards and other web protocols & patterns.
  • Experience working with a headless CMS like Sanity or Contentful.
  • An understanding of HTML rendering, and all of its variants.
  • Strong cross functional and technical collaboration skills
  • Comfortable communicating technical design choices

Preferred Qualifications:

  • A background in (or eye for) design.
  • Native app experience in either Android or iOS is a huge plus!
  • Experience writing backend code when necessary.
  • Experience specifying forward looking API contracts for backend development teams to implement.
  • Github Actions, Docker and general experience with CI.
  • Experience shipping consumer facing products and scaling while maintaining quality
  • Experience working with IOT devices
  • Broad set of skills with experience jumping into new problems and learning quickly!
  • Love iterating with experiments, throwing out the bad, and productionizing the good!

The estimated base salary range for this position is $138k to $200k, 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. At Mill, it is not typical for an individual to be hired at or near the top of the range for their role.

Apply for this Job

* Required

resume chosen  
(File types: pdf, doc, docx, txt, rtf)
cover_letter chosen  
(File types: pdf, doc, docx, txt, rtf)


Voluntary Self-Identification

For government reporting purposes, we ask candidates to respond to the below self-identification survey. Completion of the form is entirely voluntary. Whatever your decision, it will not be considered in the hiring process or thereafter. Any information that you do provide will be recorded and maintained in a confidential file.

As set forth in Mill’s Equal Employment Opportunity policy, we do not discriminate on the basis of any protected group status under any applicable law.

Race & Ethnicity Definitions

If you believe you belong to any of the categories of protected veterans listed below, please indicate by making the appropriate selection. As a government contractor subject to the Vietnam Era Veterans Readjustment Assistance Act (VEVRAA), we request this information in order to measure the effectiveness of the outreach and positive recruitment efforts we undertake pursuant to VEVRAA. Classification of protected categories is as follows:

A "disabled veteran" is one of the following: a veteran of the U.S. military, ground, naval or air service who is entitled to compensation (or who but for the receipt of military retired pay would be entitled to compensation) under laws administered by the Secretary of Veterans Affairs; or a person who was discharged or released from active duty because of a service-connected disability.

A "recently separated veteran" means any veteran during the three-year period beginning on the date of such veteran's discharge or release from active duty in the U.S. military, ground, naval, or air service.

An "active duty wartime or campaign badge veteran" means a veteran who served on active duty in the U.S. military, ground, naval or air service during a war, or in a campaign or expedition for which a campaign badge has been authorized under the laws administered by the Department of Defense.

An "Armed forces service medal veteran" means a veteran who, while serving on active duty in the U.S. military, ground, naval or air service, participated in a United States military operation for which an Armed Forces service medal was awarded pursuant to Executive Order 12985.


Voluntary Self-Identification of Disability

Form CC-305
Page 1 of 1
OMB Control Number 1250-0005
Expires 04/30/2026

Why are you being asked to complete this form?

We are a federal contractor or subcontractor. The law requires us to provide equal employment opportunity to qualified people with disabilities. We have a goal of having at least 7% of our workers as people with disabilities. The law says we must measure our progress towards this goal. To do this, we must ask applicants and employees if they have a disability or have ever had one. People can become disabled, so we need to ask this question at least every five years.

Completing this form is voluntary, and we hope that you will choose to do so. Your answer is confidential. No one who makes hiring decisions will see it. Your decision to complete the form and your answer will not harm you in any way. If you want to learn more about the law or this form, visit the U.S. Department of Labor’s Office of Federal Contract Compliance Programs (OFCCP) website at www.dol.gov/ofccp.

How do you know if you have a disability?

A disability is a condition that substantially limits one or more of your “major life activities.” If you have or have ever had such a condition, you are a person with a disability. Disabilities include, but are not limited to:

  • Alcohol or other substance use disorder (not currently using drugs illegally)
  • Autoimmune disorder, for example, lupus, fibromyalgia, rheumatoid arthritis, HIV/AIDS
  • Blind or low vision
  • Cancer (past or present)
  • Cardiovascular or heart disease
  • Celiac disease
  • Cerebral palsy
  • Deaf or serious difficulty hearing
  • Diabetes
  • Disfigurement, for example, disfigurement caused by burns, wounds, accidents, or congenital disorders
  • Epilepsy or other seizure disorder
  • Gastrointestinal disorders, for example, Crohn's Disease, irritable bowel syndrome
  • Intellectual or developmental disability
  • Mental health conditions, for example, depression, bipolar disorder, anxiety disorder, schizophrenia, PTSD
  • Missing limbs or partially missing limbs
  • Mobility impairment, benefiting from the use of a wheelchair, scooter, walker, leg brace(s) and/or other supports
  • Nervous system condition, for example, migraine headaches, Parkinson’s disease, multiple sclerosis (MS)
  • Neurodivergence, for example, attention-deficit/hyperactivity disorder (ADHD), autism spectrum disorder, dyslexia, dyspraxia, other learning disabilities
  • Partial or complete paralysis (any cause)
  • Pulmonary or respiratory conditions, for example, tuberculosis, asthma, emphysema
  • Short stature (dwarfism)
  • Traumatic brain injury

PUBLIC BURDEN STATEMENT: According to the Paperwork Reduction Act of 1995 no persons are required to respond to a collection of information unless such collection displays a valid OMB control number. This survey should take about 5 minutes to complete.


Please reach out to our support team via our help center.
Please complete the reCAPTCHA above.