Hugh O'Neill | Software Engineer

about me

Full-stack software engineer with a B.S. in Computer Engineering from the University of Pittsburgh and an AWS Certified Cloud Practitioner certification. Experienced in building and scaling production applications across modern web and desktop stacks, with a strong foundation in data structures, algorithms, and software design.

Most recently the first engineering hire at Avalon Tax, an AI-focused tax-preparation startup, where I delivered rapid platform enhancements across Electron/React frontends and Python backend services, leveraging AI-assisted workflows to accelerate development. Previously at M*Modal (3M HIS), I helped build a healthcare web application that transformed NLP-derived clinical data into actionable insights, contributing across the full stack within agile teams. Earlier, four Co-Op rotations at Ansys where I automated testing workflows and improved internal tooling.

Strongest in full-stack web development, scripting & automation, and database design. Currently seeking opportunities where I can contribute quickly and help teams deliver impactful products.

experience

🤖 ▼

Avalon Tax

Full-Stack Engineer · Chatham, NJ · Nov 2025 – Jan 2026

First engineer at an AI-focused startup building software for tax preparation professionals. Worked across the full stack directly alongside the CEO, shipping features end-to-end in a fast-moving environment.

First full-time engineering hire at AI-focused tax-preparation startup
Executed rapid codebase enhancements to stabilize platform ahead of tax-season deadlines
Leveraged AI-assisted development workflows (Claude) for engineering efficiency
Designed full-stack functionality spanning Electron/React UI and Python backend

Python React Electron Node.js PostgreSQL Supabase

🏥 ▼

3M Health Information Systems

Software Engineer T2, HCC Collaborate · Pittsburgh, PA · Jul 2018 – Jan 2023

Built and maintained features across the full stack of a healthcare application. Redesigned the database to eliminate expensive triggers in favor of a live-data model. Created automated E2E testing and reporting systems. Helped interview and train new hires, growing the team to over twice its original size.

Designed and maintained features across Angular frontend, Java/Kotlin services, and PostgreSQL
Created automated E2E testing and reporting using TypeScript and C#
Built self-updating demo environment for sales team
Redesigned database — replaced expensive trigger-based system with live-data model
Helped interview and train new hires, growing team to over 2x original size
Upgraded web client from Angular 4 to Angular 10, integrating internal npm modules

Angular Java Kotlin PostgreSQL TypeScript C#

⚙️ ▼

Ansys Inc.

Co-Op, Mesh Testing Team · Canonsburg, PA · Spring 2015 – Spring 2017

Four alternating semesters on the testing team for 3D mesh creation software. Self-taught Python on the job and used it to automate test-data analysis and build full test-automation scripts, collaborating with the team to identify new automation opportunities.

Four alternating semester-long rotations on the 3D Mesh testing team
Self-taught Python on the job, automated test-data analysis
Created and maintained full test-automation scripts
Collaborated with team to identify new automation opportunities

Python Automation Testing

projects

Unified Theme Engine

System that themes 32 applications from shared JSON color palettes. Generates configs for Waybar, Kitty, Rofi, Neovim, Firefox, and 25+ more via envsubst templating with contrast-aware color generation and per-theme overrides.

Bash Shell JSONC

source

Kitty-Run Redux

Run-and-gun platformer rebuilt from scratch in Godot. Procedurally generated terrain, pixel-art sprites, parallax backgrounds, and a CRT post-processing overlay. Playable in the browser via itch.io.

GDScript Godot 4

source play

lyrics

Terminal lyrics viewer that syncs with any MPRIS media player. Fetches time-synced lyrics from lrclib, displays a real-time scrolling view with gradient progress bar, and pulls song annotations from Genius in a dual-pane curses UI.

Python Curses MPRIS Genius API

source