# Henry (@henryfellerhoff.com)

Profile: https://sifa.id/p/henryfellerhoff.com
Headline: Senior Software Engineer

## About

I’m Henry, a senior software engineer and musician based in New York City.I am passionate about building beautiful and impactful software. I love the process of understanding user pain points, coming up with a great UX, and creating apps that are a joy to use. I thrive with lots of autonomy, and enjoy the process of taking a project from ideation to completion. I can work in both full-stack roles and in more frontend-focused ones, and pride myself on being a “design capable” developer.I’m always working on a project. I’m most known for Open IPA, an IPA transcription tool that helped 76K people this year learn how to pronounce Latin and French text. My favorite project to demo is overtone.fyi, a fast Fourier transform-powered visualizer for singing education. Recently, I’ve started working on Serial, an RSS reader designed to help people bring control back to their media consumption.I’m especially interested in music, sustainably-built software, collaborative or interactive software, and civic tech. If you have any opportunities in those areas and if you’d like to work together, don’t hesitate to reach out!

## Experience

- **Senior Software Engineer at Beacons AI** (2025 – 2025)
- **Software Engineer II at Beacons** (2023 – 2025)
- **Software Engineer I at Beacons** (2022 – 2023)
- **Winter 1 Batch at Recurse Center** (2025 – 2026)
- **Software Engineer Intern at Dendron** (2021 – 2021)
  \- Designed and rebuilt the Dendron Graph View from scratch, handling thousands of notes
  \- Worked in a fast-paced startup and open source environment
  \- Communicated directly with users, completing feature requests and responding to feedback
- **Co-Founder at Modern.fm** (2020 – 2022)
  \- Developed a custom order management and e-commerce solution for selling custom and pre-made piano loops
  \- Created an access portal for customers to view all orders and download products
  \- Created marketing materials and reached out to potential clients
- **MLH Fellow at Major League Hacking** (2020 – 2020)
  \- Built proof-of-concept Learning Management System in collaboration with a small team
  \- Led frontend development, designing and implementing interfaces to view courses, take quizzes, and fulfill other LMS functionality

## Education

- **Loyola University Chicago** — Bachelors (2018 – 2022)
- **St. Xavier High School** (2014 – 2018)

## Skills

- Java
- Microsoft Office
- React Native
- Cascading Style Sheets (CSS)
- Python
- SASS
- Git
- GraphQL
- GatsbyJS
- HTML5
- JavaScript
- Adobe Illustrator
- Python (Programming Language)
- Node.js
- React.js
- Firebase
- Swift (Programming Language)
- TypeScript

## Projects

- **Score Companion** — https://www.scorecompanion.com/
  • Built web app enabling musicians to search for music from over 139k works and 533k scores
• Created a GraphQL API to allow for fast queries across the entire database
- **Open IPA** — https://www.openipa.org/
  • Built web app transcribing foreign language text into the International Phonetic Alphabet in real-time
• Gives informative feedback on each transcription, providing insight into the transcription process
• Supports Latin and French text transcription and PDF export functionality
- **Listen Together** — https://listentogether.app/
  • Built web app enabling groups of friends to listen to songs on Spotify together
• Supports playback control and synchronous listening between multiple people
• Winner of Same Home, Different Hacks Hackathon out of 90+ total submissions
- **Primavote** — https://www.primavote.app/
  • Built web app enabling Cincinnati Children’s Hospital Center for Pediatric Genomics to vote virtually on their pilot grant proposals, invoking confidence to award $1M total to winners
• Implemented robust voting system allowing many voters to vote at once and visualized voting results through graphs

## Honors and awards

- Same Home, Different Hacks Hackathon Winning Entry

## Other profiles

- linkedin: https://www.linkedin.com/in/henryfellerhoff