Open to opportunities

Sean O'Reilly

@seanoreilly

Message

Fullstack developer building fast, accessible UIs and performant real-time web apps.

United States

Message

What I'm looking for

I’m looking for a team where I can build clean, performant, accessible web products—especially real-time dashboards and AI-powered workflows. I want ownership, clear standards (WCAG/ARIA), and opportunities to grow as a technical lead.

I’m a fullstack developer with 4+ years building fast, accessible UIs and production-ready features across the stack. I focus on clean, performant experiences that help turn complex data into clear, actionable outcomes.

As Technical Co-Founder & Lead Developer at LIFO App, I direct critical technical decisions from DevOps to the React/Next.js frontend. I built a real-time inventory dashboard that integrates the Google Vision API for OCR processing, and I optimize React Query to reduce API calls by 70% and improve real-time dashboard performance.

I also enjoy AI-native development workflows and iterate quickly using tools like Claude Code and Cursor. Previously as a Front-End Developer, I architected high-performance Next.js applications for 10+ enterprise clients with strong accessibility (WCAG 2.1 and ARIA), reducing development time by 25% through reusable, standards-driven components.

Experience

Work history, roles, and key accomplishments

Current

Technical Co-Founder

Current

LIFO App

Jan 2024 - Present (2 years 5 months)

Directed full-stack technical decisions and built a real-time inventory dashboard integrating Google Vision API for OCR. Optimized React Query to reduce API calls by 70% and managed a team of 4 across 3 time zones.

React Next.js TypeScript React Query Google Vision API (OCR)Shadcn Ui DevOps

Current

Wildlife Discovery Developer

Current

VoyageAway

Jan 2023 - Present (3 years 5 months)

Built a wildlife discovery platform integrating the iNaturalist Education API, enabling users to search animals and explore habitat, conservation status, and threats. Designed a responsive, mobile-first, accessibility-focused UI using Tailwind CSS.

React Tailwind Supabase Vercel INaturalist Education API API Integration Responsive UI

Front-End Developer

TrendyMinds Inc.

Jan 2021 - Jan 2023 (2 years)

Architected high-performance web applications using Next.js, TypeScript, and Tailwind CSS for 10+ enterprise clients. Built reusable, WCAG-focused component libraries that reduced development time by 25% and integrated Craft CMS with Next.js/React.

Next.js TypeScript Tailwind Sanity CMS React Query