software engineer / full-stack developer
I'm Marcellinus Aditya, a software engineer from Indonesia focused on full-stack and backend development. I design and build systems that solve real business problems — from e-commerce and inventory portals to microservices and data-driven applications.
frequently working with
$ whoami
marcellinus.aditya — software engineer
$ ls ~/stack
laravel go react next.js docker mysql
$ cat ~/status.txt
open to new opportunities
$
about me
I'm a computer science student and certified junior web developer (BNSP) with hands-on experience building production web applications. During my internship at DB Klik, I contributed to internal portal and omnichannel systems that manage products, distributors, orders, and stock across the business.
My work spans the full stack — Laravel and Go for backend services, React and Next.js on the frontend, and Docker, Jenkins, and Google Cloud for deployment. I approach software as engineering: understand the problem, design around the domain, and ship something maintainable.
areas of focus
selected projects
A mix of internship work, university projects, and personal builds — each one solving a concrete problem.
Project 01
DB Klik Internship · 2025–2026 · Laravel
A portal system that manages sales products, distributors, and distributor ordering. I contributed to the purchase list, receive items, and distribution features of the e-commerce workflow.
Project 02
DB Klik Internship · 2025–2026 · Laravel
An omnichannel platform covering daily staff workflows — order management, stock management, and goods receipt across the business.
Project 03
2026 · Laravel + React
A web storage application with a Laravel backend and React frontend, featuring CRUD operations for products, warehouses, merchants, users with permissions, and transactions.
Project 04
2025 · Laravel + Filament
A mobile-friendly tourist ticket sales website, built with Laravel and Filament used as the content management layer.
Project 05
2025 · Python · Final Project
A diabetes detection web app using a KNN classifier optimized with a Genetic Algorithm. The final project concluded with a 5–8% accuracy improvement.
Project 06
2025 · Go + React · Microservice API
A soccer field rental platform with location- and time-based booking. Microservice backend in Go, React frontend, Midtrans payment integration, deployed on GCS with Jenkins.
Project 07
2023 · Laravel
An e-commerce website for purchasing medicines, built with Laravel and integrated with the Midtrans payment gateway.
experience & education
/ experience
2025 – 2026
DB Klik
2023-2025
Freelance / University
/ education & certifications
Degree
Universitas Pembangunan Nasional 'Veteran' Jawa Timur
Certification
BNSP — National Professional Certification Agency
Program
Independent study and hands-on learning
tech stack
A focused, practical stack — chosen for reliability, maintainability, and getting production software into the hands of users.
Frontend
React
Interactive SPAs & component architecture
Next.js
SSR, static sites & full-stack apps
Tailwind CSS
Utility-first, responsive styling
JavaScript
Core language for the web
Backend
Laravel
Primary framework for APIs & apps
PHP
Server-side language
Go
Microservices & high-concurrency services
Python
Scripting & data-driven tools
Database & API
MySQL
Relational data modeling & queries
REST APIs
Design, build & integrate services
Filament
Admin panels & content management
DevOps & Tools
Docker
Containerized deployments
Jenkins
CI/CD pipelines
Google Cloud
Storage & app hosting
Git / GitHub
Version control & collaboration
contact
I'm open to internship opportunities, freelance work, and interesting technical problems. Let's talk about how I can help.