Always curious,
constantly tinkering,
always creating.
I'm John Lester, a web developer focused on building thoughtful, full-stack applications. I enjoy taking problems from idea to implementation — designing the backend, shaping the architecture, and bringing everything together into interfaces that feel simple and intuitive.
A developer who reads the whole stack.
I'm a fourth-year Computer Science student at the University of Southeastern Philippines with a genuine enthusiasm for anything tech. My core focus is full-stack web development—building clean, reliable applications across TypeScript, React, Next.js, and C#.
I started studying web dev in my second year out of curiosity and quickly transitioned into shipping production systems for campus operations. I also have hands-on experience in machine and deep learning using Python and TensorFlow. Always curious, constantly tinkering.
The tech stack I work with.
Languages
Frameworks
Databases
ORMs & Modeling
Cloud & DevOps
A few things I've built.
USeP - Integrated Booking System (IBS)
A web-based facility booking system that streamlines reservation management, real-time scheduling, and administrative operations for university facilities.
Trip Ticket System
A university vehicle booking and real-time tracking platform built during my OJT with a four-person team, engineered for campus-wide administrative deployment. Features a reactive booking dashboard, dispatch workflow, and driver telematics.
Prestige Pickleball Booking System (prestige-pbs)
A pickleball court reservation platform allowing players to book courts seamlessly. Developed responsive client booking interfaces and connected administrative frontend UIs with backend services.
Where I've contributed & built.
Full-Stack Web Developer Intern
Assisted in the development and maintenance of full-stack web applications utilizing C#-based frameworks, implementing new features and resolving bugs across the frontend and backend.
- Developed enterprise UI views and reporting components utilizing Blazor and DevExpress.
- Engineered high-performance data access layers and SQL queries utilizing C# and Dapper over MSSQL.
- Diagnosed and resolved bugs across full-stack modules to ensure smooth client operations.
Full-Stack Developer Intern
Spearheaded full-stack engineering for the university vehicle booking and dispatch management system with a four-person development team.
- Designed normalized relational schemas and data access layers using Prisma and MSSQL.
- Built reactive booking workflows and administrative dispatch dashboards in Next.js Turborepo.
- Integrated driver trip logging and real-time status pipelines engineered for campus-wide rollout.