ZELUN HE

ST. LOUIS, MO

SOFTWARE ENGINEER · ARROWS UP

ZELUN HE.

Full-stack software engineer building reliable web platforms.At Arrows Up, I modernize client platforms with SvelteKit. I also build full-stack AI applications and contribute to published machine learning research.

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QUEST LOG

Experience.

Current role

Arrows Up

Software engineer · May 2026 – present · St. Louis, MO

Modernizing client web platforms for service businesses.

Contributions

  • Rebuilt more than 21 client sites with SvelteKit, including routing, CMS integrations, and SEO migrations.
  • Built reusable client-site templates that reduced delivery time by 50%.
  • Configured Sanity CMS, Cloudflare Workers, analytics, and GitHub Actions deployment pipelines.

Results

21+client sites
50%shorter delivery
Visit Holcomb Tree Service ↗
Holcomb Tree Service website designed for a Dallas tree care companyView full image

SELECTED WORK

Featured projects.

Try a sample workflow or explore a client website. No account needed.

Scribsy clinical documentation dashboard with notes and calendar

CLINICAL DOCUMENTATION

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No signup · fictional sample

Software engineering intern · N-of-1 AI
Jun – Aug 2025

I built transcription, SOAP generation, and note management into an audio-to-note review workflow.

Next.js · FastAPI

View code ↗Screenshot
Project details
Challenge
Turn recorded sessions into structured clinical notes.
My contribution
Architected audio transcription, SOAP note generation, and note management.
Delivered
An audio-to-note workflow for preparing and managing practitioner session notes.

NO SIGNUP · FICTIONAL VISIT

Compare the transcript and SOAP draft, edit a section, then export a sample PDF.

Narrator author studio with audiobook library and creation workflow

FULL-STACK AUDIOBOOK APP

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No signup · sample studio. No new audio generated.

Full-stack developer · Personal project

I built the manuscript-to-audiobook workflow with persisted narration jobs, chapter playback, and downloads.

Next.js · TypeScript · SQLite · Piper · FFmpeg

View code ↗Screenshot
Project details
Challenge
Run long narration jobs while preserving chapter progress.
My contribution
Built manuscript upload, persisted narration jobs, progress tracking, playback, and downloads.
Delivered
An author workflow from manuscript upload to chapter audio and downloadable audiobooks.

NO SIGNUP · SAMPLE STUDIO

Browse sample books, play a voice sample, and explore the creation form.

Preview only; no new audio is generated.

Holcomb Tree Service website, an example of my client platform work at Arrows Up

PROFESSIONAL CLIENT PLATFORMS

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Client website · staging preview

Software engineer · Full-time
May 2026 – present

I rebuilt client platforms, created reusable templates, and configured CMS and deployment pipelines.

21+ client sites50% shorter delivery

SvelteKit · TypeScript · Sanity · Cloudflare Workers · GitHub Actions

Screenshot
Project details
Challenge
Modernize client sites across routing, CMS integrations, and SEO migrations.
My contribution
Rebuilt client platforms, created reusable templates, and configured content and deployment pipelines.
Results
21+ client sites rebuilt. Reusable templates reduced delivery time by 50%.

CLIENT WEBSITE · STAGING PREVIEW

Browse a service page and explore the navigation on a real client website.

MORE TO EXPLORE

More projects.

Web applications, research, systems, and games.
7 more projects

CURRENTLY BUILDING

IN PROGRESS

Orbit Image Converter

A drag-and-drop image converter with a radial format picker. Choose PNG, WebP, JPG, BMP, or ICO, adjust quality and size, and download a single image or a batch ZIP. All image processing stays on your device.

  • JavaScript
  • Canvas API
  • File API
Orbit image converter interface preview with a radial format selectorINTERFACE PREVIEW · ENLARGE

About me.

Pixel-art character representing Zelun He
Zelun HeSoftware engineer, Arrows UpSt. Louis, MO

I combine web engineering with experience in applied machine learning research.

I earned a B.S. in Computer Science with a Mathematics minor from Missouri State University in December 2025. My work spans client web platforms, clinical documentation software, and transformer research for time series forecasting.

As president of Missouri State’s ACM chapter, I organized workshops, technical talks, and career events, helping increase engagement by 50%.

Items collected

  • B.S. Computer Science, Mathematics minor, 2025
  • Springer ITNG 2026 publication
  • First place, 2025 CNAS Computer Science symposium

Technical skills

Languages

  • C++
  • C
  • Python
  • JavaScript
  • TypeScript
  • Kotlin

Web & backend

  • SvelteKit
  • React
  • Next.js
  • FastAPI
  • Tailwind CSS

Data & platforms

  • PostgreSQL
  • Prisma
  • Sanity CMS
  • Cloudflare Workers
  • Vercel
  • GitHub Actions

Machine learning

  • PyTorch
  • TensorFlow
  • Pandas

A LITTLE SIDE QUEST

The arcade.

Take a break with Tetris, Galaga, or Snake. Pick a game and use the keyboard or on-screen controls to play.

SCORE 000000
AUTO PLAY • CLICK TO CONTROL

LET’S CONNECT.

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PROJECT SCREENSHOT

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