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I’m Cassius Hill, a web developer based in Orem, UT. I build full-stack web applications using JavaScript, Next.js, and Firebase, focusing on secure authentication, payments, AI integrations, and responsive UI development. I'm passionate about crafting scalable architectures, delivering clean code, and collaborating with teams to turn ideas into polished products.…

Cassius Hill

Web Developer, Full Stack Developer, Data Annotator, +2

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I’m Cassius Hill, a web developer based in Orem, UT. I build full-stack web applications using JavaScript, Next.js, and Firebase, focusing on secure authentication, payments, AI integrations, and responsive UI development. I'm passionate about crafting scalable architectures, delivering clean code, and collaborating with teams to turn ideas into polished products.…

Available to hire

I’m Cassius Hill, a web developer based in Orem, UT. I build full-stack web applications using JavaScript, Next.js, and Firebase, focusing on secure authentication, payments, AI integrations, and responsive UI development.

I’m passionate about crafting scalable architectures, delivering clean code, and collaborating with teams to turn ideas into polished products.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Advanced

Work Experience

Full Stack Web Developer at Pre Neural Launch

April 1, 2025 - Present

Implemented secure user authentication using Firebase and Stripe for payments enabling seamless subscription management. Architected Next.js application with App Router, Server Components and API routes, supporting 50+ users. Designed and built responsive UI with Tailwind CSS and Framer Motion achieving fast load times and smooth interactions across devices. Integrated DeepSeek AI API with custom prompt engineering to generate personalized business ideas and market research insights.

Data Annotator

May 1, 2025 - January 1, 2026

Annotate and label high-quality text data to train and refine machine learning models, enhancing AI language comprehension. Evaluated and annotated code samples across multiple programming languages to improve AI code generation capabilities. Identified and categorized code errors, bugs, and logical inconsistencies in AI-generated programming solutions. Completed 200+ annotation tasks across 25+ projects, maintaining consistent quality standards.

Development Team Member at Stoneworks

March 1, 2022 - April 1, 2024

Designed and created a line of assets for the company's online store, fulfilling over 20 client requests successfully. Tested and evaluated pre-release features, providing detailed reports and recommendations for product improvements, leading to the implementation of 10+ features.