Ethan Millstein, Developer in Scottsdale, AZ, United States
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Ethan Millstein

Verified Expert  in Engineering

Software Developer

Scottsdale, AZ, United States

Toptal member since November 1, 2024

Expertise
Full-stackAPINode.jsMongoDBJavaScriptHerokuExpress.jsTypeScriptData VisualizationVue.jsPostgreSQLREST APIData AnalysisReact.js
Bio

Ethan is a lead software developer with over seven years of experience building startups and new products. Specializing in React Native, Vue, and Node.js, he has successfully launched mobile apps and full-stack solutions for industries ranging from fintech to real estate. Ethan combines strong technical expertise with a deep understanding of product strategy and has a proven track record of delivering impactful solutions for clients and businesses.

Portfolio

alook
React Native, AdonisJS, PostgreSQL, Heroku
Tribal
React Native, TypeScript, React
ABI Multifamily
Vue, Express.js, MongoDB, Heroku, AWS IoT

Experience

  • Full-stack Development - 9 years
  • MongoDB - 7 years
  • Vue - 7 years
  • Node.js - 7 years
  • React Native - 7 years
  • Mobile App Development - 7 years
  • TypeScript - 6 years
  • PostgreSQL - 4 years

Availability

Part-time

Preferred Environment

Expo, React Native, PostgreSQL, AdonisJS, Vue, Node.js, MongoDB, React, JavaScript, TypeScript

The most amazing...

...thing I've developed from scratch is a dating app that includes user authentication, filtering, and real-time features.

Work Experience

Co-founder and Lead Engineer

2024 - 2024
alook
  • Developed and launched a mobile dating app for iOS and Android within nine months using React Native backed by AdonisJS and PostgreSQL.
  • Served as the sole engineer on the project. Designed the app's UI/UX and managed the back-end infrastructure.
  • Collaborated with a business partner to shape product strategy while ensuring technical stability.
Technologies: React Native, AdonisJS, PostgreSQL, Heroku

Lead Mobile Engineer

2020 - 2023
Tribal
  • Developed the MVP for Tribal Credit's mobile app, facilitating the series A funding round.
  • Hired and managed a mobile team of seven engineers, providing mentorship and setting sustainable coding practices.
  • Headed mobile development, coordinating with design, product, and business teams to ensure smooth feature releases and product scalability.
Technologies: React Native, TypeScript, React

Full-stack Engineer and Financial Analyst

2015 - 2023
ABI Multifamily
  • Built a web-based financial valuation platform using an Excel model, leveraging Vue and Express.js for seamless back-end-to-front-end integration.
  • Created a REST API and implemented real-time data with SockJS to enhance financial data workflows.
  • Trained a 50-person team on the platform's use and features while continually enhancing operational workflows.
Technologies: Vue, Express.js, MongoDB, Heroku, AWS IoT

Senior Mobile and Product Engineer

2016 - 2022
Henri
  • Launched the Henri Resident Portal app, managing customer onboarding and support.
  • Rebuilt the mobile app from Ionic to React Native, integrating it with a Ruby on Rails back end for a more optimized user experience.
  • Played a crucial role in product development, aligning business strategies with technical execution and defining the scope of key features.
Technologies: React Native, Ruby on Rails 5

Experience

alook | A Modern Dating App

https://www.alookdating.com
A full-featured dating application designed for mobile platforms. Built using React Native and AdonisJS, the app enables users to send 'looks' to each other, manage profiles, and explore connections. The app includes key features like real-time notifications, role-based access, and user authentication. It also supports advanced features like user interests, filtering, and mobile performance optimizations.

I spearheaded the full-stack development from MVP to launch, managing the entire back-end API integration, user authentication, and client-side state management.

Valuzz | Real Estate Market Analysis and Valuation Platform

https://www.valuzz.com
A comprehensive real estate market analysis and valuation platform designed for ABI Multifamily. Valuzz enables users to generate property valuations, track market trends, and access data-driven insights to inform decision-making.

As the platform's sole developer and ongoing maintainer, I built the entire system from scratch, focusing on delivering a scalable and user-friendly solution for real estate professionals. I headed the full-stack development, including the front end using Vue, the back end using Node.js, database integration, and ongoing updates based on user feedback and market needs.

Education

2010 - 2014

Bachelor's Degree in Business Law and Real Estate

Arizona State University - Tempe, AZ, USA

Skills

Libraries/APIs

Node.js, React Query, REST APIs, Vue, React

Tools

Expo

Languages

JavaScript, TypeScript

Frameworks

React Native, Express.js, AdonisJS, Ruby on Rails 5

Platforms

Heroku, AWS IoT

Storage

MongoDB, PostgreSQL

Paradigms

UI Design, UX Design

Industry Expertise

Project Management

Other

Analytical Thinking, Real Estate Analysis, Mobile App Development, API Design, Full-stack Development, Financial Analysis, Business Development, Contract Law, Data Analysis, Data Visualization

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