Hyejin Ahn

Software engineer

Corporate Experience

Senior Software Engineer
Qurate USA Remote | 2023
  • Full Stack Engineer at Qurate Inc., contributing to the development of a B2B SaaS marketing intelligence platform, offering actionable insights for content strategy and business growth.
  • Working on both the frontend and backend, collaborating with the product team to define the scope, breakdown, and sequencing of proposed features.
  • - Vue.js, Ruby on Rails, Cloud66, AWS, PostgreSQL, Redis, Sidekiq, Elasticsearch
Full Stack Software Engineer
BigCommerce, San Francisco, USA | 2021 - 2023
  • Contributed to the development and maintenance of Page Builder, the core product of BigCommerce, which allows users to easily create custom websites using drag-and-drop components.
  • - Ruby on Rails, Scala, PHP, React, Microservices
Senior software engineer
PatientsLikeMe, San Francisco, USA | 2020
  • Web application to allow patients to form communities and share their data, collaborating with product designers, QA, operations, and other developers.
  • Worked closely with the product team to determine the scope, breakdown, and sequencing of proposed features.
  • In charge of the regularly scheduled software release and health monitoring of the site.
  • Daily pair programming and mentorship of junior devs
  • - Ruby on Rails, PostgreSQL, React, Jest, Elasticsearch
Full stack developer
Qurate Inc., Fukuoka, Japan | 2018 - 2019
  • Qurate is a B2B social media SaaS product, with content publishing, analytics and campaign planning features connected to Facebook, LinkedIn, Instagram and Twitter.
  • Worked as a full stack engineer with 2 backend engineers and 1 frontend engineer.
  • Launched a brand new social network management dashboard in collaboration with Toppan, one of the largest print companies in Japan.
  • - Ruby on Rails, PostgreSQL, Sidekiq, Vue.js, Unit testing
Mirror Mirror on the Wall, Seoul, South Korea | 2018
  • Built a smart mirror and entered it into the K Startup accelerator program. Received the first prize and funding to continue the project.
  • Created physical prototypes with a Raspberry Pi running a GUI I wrote, which talked to a Ruby on Rails backend to grab the weather info from the Internet.
  • Wrote iPhone and Android apps to configure the device’s WiFi settings over Bluetooth Low Energy (BLE).
  • - Ruby on Rails, HTML/CSS, Swift, Ruby Shoes
Full stack developer
YsPeople, YsEpicure, Perth, Australia | 2017 - 2018
  • YsEpicure is an online store, selling local snacks and beverages in Western Australia and YsPeople is a news site and online community for local people intended to promote items on the store
  • Worked on the frontend and backend, integrated Facebook’s API for the news site, and PayPal and an Australian payment provider for the online store.
  • - Ruby on Rails, jQuery, HTML/CSS
Full stack developer - remote
Team Milestone, Remote | 2016 - 2017
  • Worked on a web app used by a custom-tailored suit company, to manage their business, including customer lifecycle, measurements and photos.
  • - Ruby on Rails, jQuery, HTML/CSS

Personal Projects

MindCopilot AI | 2023 - Current
  • AI-powered Journal app. Copilot your mind with AI.
  • - Node.js, ReactJS, Next.js, Supabase, Embedding, OpenAI, Vercel
  • An iOS application inspired by the popular Subreddit ELI5 (Explain Like I'm Five), designed to break down complex ideas into easily understandable concepts.
  • - React Native, OpenAI
Medical AI | 2023
  • The Medical AI is a project that was built during the AI Techstars Startup Weekend.
    How it works: Users provide their medical records, which are then interpreted by the GPT-3 API. It translates the data into a user-friendly format, facilitating easier understanding and action.
  • - ReactJS, Vercel
  • Personalized online memorial sites. Actively used by more than 500 Korean users
  • - Ruby on Rails, ReactJS, HTML/CSS, Heroku

Project presentation video

  • Fab Academy 2020 final project
  • Smart miniature house designed in Fusion 360, constructed with laser cutter
  • Elevator, room light control, garage door, Swimming pool with pump and motor
  • All features controllable on web interface via Wifi -- Raspberry Pi
  • - Laser cutting machine, 3D printer, CNC 3-axis milling machine, PCB milling machine
MBTI app | 2019
  • MBTI app for Korean audience
  • Displays information about personality types, celebrities and compatibility in a clean interface
  • Top 30 in iOS App Store Korea
  • - Flutter, Ruby on Rails backend


Fab Academy, Amsterdam, Netherlands | 2020
  • The famous 6-month intensive digital fabrication course based on MIT’s popular rapid-prototyping course How To Make (almost) Anything, both taught by Prof. Neil Gershenfeld. Details and documentation available here.
Dev Bootcamp, San Francisco, USA | 2016
  • Web development course
Sungkyunkwan University, Seoul, South Korea | 2010 - 2015
  • Electrical and electronics engineering - Bachelor's degree
Technische Universität Chemnitz, Chemnitz, Germany | 2014
  • Electrical and electronics engineering - Exchange student program