Building innovative web solutions with modern technologies. Passionate about creating seamless user experiences and scalable applications.
See My PortfolioAbout Me
I'm Leo De Leon, a Computer Information Systems graduate from Illinois Institute of Technology with hands-on experience in IT support, software development, data analysis, and secure web technologies. Skilled in Java, Python, JavaScript, and modern frameworks, I have a strong foundation in systems, databases, cybersecurity principles, and machine learning. I'm passionate about collaborating across teams, troubleshooting technical issues, and contributing to scalable, data-driven solutions.
Full-Stack Developer
Experienced in building responsive web applications and e-commerce platforms
IT Support Specialist
Hands-on experience supporting enterprise environments, troubleshooting hardware and software issues
Problem Solver
Strong foundation in algorithms, data structures, and system design
Team Collaborator
Proven ability to work across teams and communicate with technical and non-technical users
Projects
A collection of my recent work showcasing various technologies and problem-solving approaches
Featured Projects
March 2025 - Present
•Designed and implemented a secure information system supporting 100+ product listings using HTML, CSS, and JavaScript.
•Integrated Stripe Checkout with SSL encryption, improving transaction security and reducing checkout errors by ~20%.
•Applied access control, data validation, and secure authentication principles to protect user and transaction data.
•Deployed and maintained the system using GoDaddy DNS/SSL configuration and version control best practices.
November 2024 - October 2025
•Developed a data-driven web application using Next.js, JavaScript, and Tailwind CSS to visualize complex datasets.
•Designed components to analyze and present player statistics, projections, and matchup data.
•Applied system design and UI principles inspired by enterprise-grade applications.
•Deployed via Vercel with Git-based workflows and Agile iteration.
Supporting Projects
Nov 2024 – Dec 2024
- • Developed a website using HTML, CSS, and JavaScript to promote professional shoe restoration services
- • Designed a clean, user-friendly layout to highlight craftsmanship and attract potential clients
- • Implemented responsive design for optimal viewing across mobile and desktop devices
Jun 2023 – Aug 2023
- • Designed and developed a travel guide site promoting cultural insights
- • Prioritized accessibility and responsive design for desktop and mobile
Coursework Highlights
- • Student System (Java) - Built a comprehensive student management system with CRUD operations
- • ML Housing Price Predictor (Python) - Developed machine learning model to predict housing prices
- • JavaFX Converter - Created GUI application for unit conversions
- • Bash Automation Scripts - Automated system tasks and file management
- • Data Structures Implementation (Java) - Implemented various data structures from scratch
Skills
Technologies and tools I work with to bring ideas to life
Programming & Scripting
Systems & Development Tools
Web & Application Development
Data & Databases
Systems & Software Practices
Platforms & Services
Education
Illinois Institute of Technology, Chicago, IL
Graduated
December 2025
Minor
Internet Application Development
Relevant Coursework
Certifications
- IBM Z Xplore (Mainframe Fundamentals & Advanced) - Completed, 2025
Get In Touch
I'm always open to discussing new projects, opportunities, or collaborations