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Hi, I'm Sean Celli, a Web Developer

I'm proficient in React, Next.js, JavaScript, HTML, CSS, and many other web-related technologies. I leverage these skills to create seamless and dynamic web experiences tailored to any need.
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My Experience
Full Stack Software Developer (Internship)
Intel | May 2022 - August 2024
Frontend Software Developer + UI/UX Tester (Internship)
Intel | August 2021 - May 2022
My Education
B.S. Computer Science
California State University, Sacramento | May 2024
Associates in Computer Science + Associates in Math and Science
Folsom Lake College | May 2021
My Skills
JavaScript logo

JavaScript

The language of the web

TypeScript logo

TypeScript

Type safe JavaScript

React logo

React

JavaScript library

Tailwind logo

Tailwind

CSS framework

Express logo

Express

Node.js framework

Node logo

Node

JavaScript runtime

Next logo

Next

React framework

Supabase logo

Supabase

Lean cloud database

Svelte logo

Svelte

Frontend framework

Git logo

Git

Version control

About Me

Hi there! I'm Sean Celli, a web developer who loves creating dynamic and user-friendly web experiences. My primary expertise lies in React, JavaScript, HTML, and CSS, and I love using these tools to bring ideas to life on the web. Over my career, I've had the chance to work on some amazing industry projects, making changes that have improved the experience of hundreds of thousands of users, and leading development on industry-grade websites from the ground up.


Outside of my nine-to-five, I enjoy getting outdoors as much as possible and spending time with my girlfriend. Health and wellness are top priorities for me, and I am currently working on a website that will share this devotion towards health with many others and hopefully inspire them to make good changes.

My Work
Portfolio Site

My Contributions

Developed the entire project with a focus on clean animations and a modern, responsive design. Utilized Astro's static site generation to ensure fast load times and optimal SEO performance. Achieved 100% score on core web vitals with Google Lighthouse.

Technologies Used

Astro Vercel Tailwind CSS TypeScript

Portfolio Site

My responsive portfolio site built with Astro, showcasing my skills and projects.
Bertoni Handyman Services

My Contributions

Lead developer on a team of 3 and later solo, responsible for around 80% of the codebase. Implemented a robust and secure admin dashboard. Worked directly with the client to turn their ideas into a functional and aesthetically pleasing website.

Technologies Used

React Express.js MongoDB Tailwind CSS TypeScript Vercel

Bertoni Handyman Services

Full-featured website for a handyman service. Includes an admin dashboard for creating and managing quotes, jobs, and clients.
Random Acts of Kindness

My Contributions

Developed the entire project, implementing the daily acts generation system and responsive design. Integrated with external APIs for content management. Utilizes a cron task on Supabase to populate new acts daily.

Technologies Used

Svelte SvelteKit Tailwind CSS TypeScript Supabase Vercel

Random Acts of Kindness

A web app that displays a new act of kindness every day.
Intel Gaming

My Contributions

Added over 20 new features and improvements to the website and app, mostly related to the Overwolf API integration and CMS. This reached over 200,000 users monthly, and helped internal teams better manage the content that was displayed to users.

Technologies Used

React Overwolf API TypeScript

Intel Gaming Website & App

Intel's primary hub for all things gaming.
Let's Make Great Things Together