CKGrounds Pickleball Booking System
A live pickleball court booking and management system with QR status tracking, built freelance with Next.js and PostgreSQL.
Next.jsTypeScriptPostgreSQL
ViewFreelance Software Developer — CKGrounds
Hi, I'm Josephus Kim Sarsonas
Full-stack software engineer and systems analyst.
I work across the whole stack: gathering requirements, designing the database, building the backend and the interface, then deploying it. I led a team of four on OWBAP, an inter-agency case management system for the Department of Migrant Workers, and I'm currently building CKGrounds, a live court booking system, while finishing a BS in Information Systems at Cebu Technological University.
Working with
Laravel & PostgreSQLNext.js & ReactTypeScriptInertia.jsPrisma ORMDocker
A few things I've built
Selected work across public service, education, and client work.
OWBAP — One Window Bayanihan Assistance Program
An inter-agency case management system for distressed OFW cases, led and architected with a four-person team.
Laravel 13ReactInertia.js
View
LETReview
A gamified licensure reviewer that reached 120+ users and 4,000+ visits in its first fourteen days.
Next.jsTypeScriptReact
ViewMore than the stack
The person, volunteer work, and working style behind the projects.
Josephus.jpg
I like turning unclear, repetitive work into something people can actually use.
I'm Josephus Kim L. Sarsonas, a full-stack software engineer and Information Systems student based in Cebu.
Most of my projects start with listening: how people work today, where they lose time, and what would make the next step clearer. I care about the finished experience as much as the work behind it.
CTU student, graduating in 2027 with a 1.45 GWA
Freelance Software Developer at CKGrounds
Building with students at CTU Main
Core Tech Officer
AWS Student Builder Group — Cebu Technological University
Volunteer chapter officer helping run a campus community where students learn, experiment, and build with cloud technology together — supporting member projects and hands-on learning.
Chief Technical Officer
Google Developer Groups — CTU Main
Volunteer technical lead for the group’s web presence and community systems, including the official chapter website — built and maintained with contributions from the technical team.
People first. Useful outcomes. Clear handoffs.
Listen before building
I begin with the people doing the work, because the real problem rarely fits neatly into the first brief.
Keep everyone in the loop
I share progress early, invite feedback, and make decisions understandable to the whole team.
Make it useful and finished
I care about the details people feel: clear steps, dependable behavior, and work someone else can continue.
S
System Analysis & Design
Practice
Turning business processes into a system design. I did this as systems analyst on OWBAP.
MVC Architecture
Practice
Structuring Laravel applications so routing, data and presentation stay separate.
S
SDLC
Practice
Requirements gathering through to deployment and maintenance, which is the shape of my work at Edufied.
R
RESTful APIs
Practice
Designing and consuming REST endpoints across Laravel and Express backends.
A
Authentication & Access Control
Practice
Email OTP, TOTP multi-factor, role-based access control, row-level security, audit logging and rate limiting.
PHP
Language
My first backend language, and what Laravel and the older coursework run on.
TypeScript
Language
The default for anything I build on Next.js or Express.
React
Frontend
Components and hooks. The front end of OWBAP, Normalite EDGE and LETReview.
Next.js
Frontend
App Router, server components and server actions.
Inertia.js
Frontend
Wiring a React front end straight onto Laravel routes without a separate API.
Tailwind CSS
Frontend
Utility-first styling on every project since 2024.
Laravel
Backend
Eloquent, queues, middleware and policies. Version 13 on OWBAP.
Node.js
Backend
Server-side JavaScript for the Express and Next.js work.
Express
Backend
The API layer behind Normalite EDGE.
PostgreSQL
Data
My default database. Schema design, constraints and row-level security.
Prisma ORM
Data
Typed schema and migrations for the Node projects.
Supabase
Data
Managed Postgres with row-level security. Behind OEC Verify.
Git
Tools
Branching and history on every project here.
Docker
Tools
Containers so an environment behaves the same everywhere.
S
System Analysis & Design
Practice
Turning business processes into a system design. I did this as systems analyst on OWBAP.
MVC Architecture
Practice
Structuring Laravel applications so routing, data and presentation stay separate.
S
SDLC
Practice
Requirements gathering through to deployment and maintenance, which is the shape of my work at Edufied.
R
RESTful APIs
Practice
Designing and consuming REST endpoints across Laravel and Express backends.
A
Authentication & Access Control
Practice
Email OTP, TOTP multi-factor, role-based access control, row-level security, audit logging and rate limiting.
PHP
Language
My first backend language, and what Laravel and the older coursework run on.
TypeScript
Language
The default for anything I build on Next.js or Express.
React
Frontend
Components and hooks. The front end of OWBAP, Normalite EDGE and LETReview.
Next.js
Frontend
App Router, server components and server actions.
Inertia.js
Frontend
Wiring a React front end straight onto Laravel routes without a separate API.
Tailwind CSS
Frontend
Utility-first styling on every project since 2024.
Laravel
Backend
Eloquent, queues, middleware and policies. Version 13 on OWBAP.
Node.js
Backend
Server-side JavaScript for the Express and Next.js work.
Express
Backend
The API layer behind Normalite EDGE.
PostgreSQL
Data
My default database. Schema design, constraints and row-level security.
Prisma ORM
Data
Typed schema and migrations for the Node projects.
Supabase
Data
Managed Postgres with row-level security. Behind OEC Verify.
Git
Tools
Branching and history on every project here.
Docker
Tools
Containers so an environment behaves the same everywhere.