Portfolio — Calvin Putra Nirwana

About Me

I’m a Fullstack Developer experienced in designing and building applications from the ground up to production. My preferred tech stack includes Laravel, Livewire, TailwindCSS, and the JavaScript ecosystem.

For presentation websites such as company profiles or landing pages, I also work comfortably with WordPress to simplify content management. My main focus remains on clean structure, performance, security, and a seamless user experience.

⚙️

Backend (Laravel, REST API, MySQL)

🧩

Frontend (Blade, Tailwind, React)

💻

JavaScript, Livewire & jQuery

🔧

Git, Bitbucket & GitHub Workflow

📦

API Integrations (WhatsApp, Midtrans, Xendit)

📊

Admin Dashboard & Data Visualization

🧠

System Analysis & Documentation

🛠️

Error Tracking (Sentry.io)

💳

Payment Gateway Integration

📝

WordPress (Company Profile, Blog)

📣

Landing Pages & SEO On-Page

🔒

Server Setup (Nginx, SSL, Backup)

Tech Stack & Tools

🧩 Backend & Framework

Laravel REST API MySQL

🎨 Frontend & UI

TailwindCSS React JavaScript jQuery

⚙️ DevOps & Infrastructure

Git GitHub Bitbucket Hostinger SSL Deployment Sentry.io GTMetrix LightHouse

💳 Payment Gateway & API

Midtrans Xendit Postman Payment Gateway

🧠 Tools & Design

PhpMyAdmin VSCode Figma WordPress SEO On-Page

Experience

Fullstack Web Developer — Kelas.com

Aug 2022 — Nov 2024 • Jakarta, Indonesia

Led full-cycle development for Bootcamp Platform — feature design, debugging, and optimization.
Improved page speed by 40% through query optimization and Lighthouse audits.
Enhanced SEO and accessibility to maintain 100/100 PageSpeed score consistently.
Collaborated with cross-functional teams under Agile Scrum sprints.

Key Achievements:

Reduced Bootcamp main page load time to under 3 seconds.
Boosted organic traffic by 27% through SEO-driven structure updates.

Tech Stack:

Laravel Blade Bootstrap MySQL Git GitHub Trello Agile ( Sprint Backlog ) Sentry.Io

Highlighted Projects:

Progress User Journey V2.0 (dynamic user tracking & report visualization)
Internal CRUD Dashboard for User Journey Management
Project Page with Like System, Google Slides Embed, and Pagination

Fullstack Web Developer Intern — Kelas.com

Feb 2022 — Aug 2023 • South Jakarta, Indonesia

Developed and maintained web modules using Laravel MVC and MySQL.
Fixed live production bugs via Sentry.io and performed rollback via Git branches.
Implemented new UI components using Tailwind & Alpine.js with reusable Blade directives.
Collaborated with QA and design teams for test-driven deployment.

Tech Stack:

Laravel Blade Bootstrap MySQL Git GitHub Trello Agile ( Sprint Backlog ) Sentry.Io

Highlighted Projects:

New Landing Page Redesign
Job Connector CRUD & Dashboard System
Auto-Generated CV (ATS-Compatible) Module

Projects

Harry Potter — Event Registration, Quiz & Word Game Platform

Oct 2025

Interactive event registration and engagement platform for a Harry Potter–themed experience, featuring participant verification, house selection, admin analytics, and mini-games like quizzes and hidden-word challenges.

Laravel Blade Tailwind MySQL

View Website

J&T Express — Seller & Returns Reporting

Sep 2025 - Okt 2025

Owner-focused reporting sourced from the official J&T portal: upload, parse, and filter data to generate per-seller and returns reports.

Laravel Blade Tailwind MySQL

Private Access

TMJS — E-Commerce & Stock Management

Aug 2025 — Sep 2025

Full online system for sales, purchasing, and inventory management with real-time analytics and cost tracking.

Laravel Blade Tailwind MySQL

Private Access

SSCP — BoQ (RAB) Management for Warehouse Project

Apr 2025 — Jul 2025

Cost estimation (BoQ) and progress monitoring for warehouse construction projects.

Laravel Blade Tailwind MySQL

Private Access

AdminMetroJaya — Sanitary Store Management

Jan 2025 — Mar 2025

Offline web system for managing sales, purchases, and stock of sanitary products — replacing manual Excel workflows.

Laravel Blade Tailwind MySQL

Private Access

Harry Potter — Event Registration, Quiz & Word Game Platform

Oct 2025

Roles & Scope

PM UI/UX Backend Frontend DevOps

Outcomes & Metrics

Average registration completion under 1 minute.
Verified participant data accuracy >98%.
Manual data entry reduced by 95% through automation and exports.

Business Flow

CTA “Register Now” → form submission → email verification → participant ID/QR issued.
Participants complete mini-games (quiz & word challenges)
Admin assigns participants to their respective houses and reviews complete participant data.

Key Features

Responsive registration form with house selection and profile setup.
Email verification and unique participant ID/QR pass generation.
Integrated quiz and word-guessing mini-games for participant engagement.
Admin dashboard with filters (house, batch, region)

Tech Stack

Laravel Blade Tailwind MySQL

Infrastructure

GitHub Hostinger Nginx SSL Backup

View Project

J&T Express — Seller & Returns Reporting

Sep 2025 - Okt 2025

Owner-focused reporting sourced from the official J&T portal: upload, parse, and filter data to generate per-seller and returns reports.

Roles & Scope

PM UI/UX Backend Frontend DevOps

Outcomes & Metrics

Report preparation time reduced by 80% (manual to automated).
Improved accuracy in seller settlement & return reconciliation.

Business Flow

Export from J&T portal → upload to system → ETL parsing & normalization.
Review dashboards → apply filters → generate per-seller/returns reports.

Key Features

Upload & parse exports from the official J&T portal (CSV/Excel).
Per-seller breakdown: orders, revenue, shipment status, and fees.
Returns & refund tracking status.
Advanced filters (date range, seller, service type, status).
Custom reports (PDF/Excel) scheduled or on-demand.
Data validation & reconciliation logs to prevent duplication.
Role-based access (Owner, Seller, Admin)

Tech Stack

Laravel Blade Tailwind MySQL

Infrastructure

GitHub Hostinger SSL Backup

TMJS — E-Commerce & Stock Management

Aug 2025 — Sep 2025

Full online system for sales, purchasing, and inventory management with real-time analytics and cost tracking.

Roles & Scope

PM UI/UX Backend Frontend DevOps

Outcomes & Metrics

Input time reduced by 90%.
Stock and profit accuracy improved by 90%.
Integrated online access for admin, warehouse, and finance.

Business Flow

Sales → Invoice → Payment with live stock updates.
Purchasing → Cost & COGS adjustments.
Automatic margin calculation including admin fee per item.
Accounts receivable follow-ups with due reminders.

Key Features

Sales recording with itemized admin fees per product.
Customer invoicing with PDF export and automatic stock reduction.
Supplier purchasing and cost tracking.
Real-time dashboard showing revenue, margin, profit, and expenses.
Comprehensive PDF reports with date range filters.
Online-based architecture for multi-user access and synchronization.

Tech Stack

Laravel Blade Tailwind MySQL

Infrastructure

GitHub Hostinger SSL Backup

SSCP — BoQ (RAB) Management for Warehouse Project

Apr 2025 — Jul 2025

Cost estimation (BoQ) and progress monitoring for warehouse construction projects.

Roles & Scope

PM Backend Frontend DevOps

Outcomes & Metrics

Budgeting process accelerated by 3×.
Reduced manual errors in RAB calculation.
Improved cost transparency and project efficiency.

Business Flow

BoQ draft → review → approval → realization.
Each progress and material usage updates stock and variance report automatically.
Comparison between planned and actual costs for performance tracking.

Key Features

Create and evaluate RAB (BoQ) for warehouse construction.
Automatic classification of budget as cheap, normal, or expensive.
Customizable RAB format with built-in formulas — just input volumes and prices.
Manual BoQ entry and Excel import support.
Material stock tracking for real-time cost control.
Role-based access for PIC Warehouse, Admin, and Owner.

Tech Stack

Laravel Blade Tailwind MySQL

Infrastructure

GitHub Hostinger Nginx SSL

AdminMetroJaya — Sanitary Store Management

Jan 2025 — Mar 2025

Offline web system for managing sales, purchases, and stock of sanitary products — replacing manual Excel workflows.

Roles & Scope

PM UI/UX Backend Frontend DevOps

Outcomes & Metrics

Operational efficiency improved by 50%.
Report compilation reduced from 2 hours to 10 minutes.
Seamless transition from Excel to a web-based system.

Business Flow

Sales → Payment → Stock Update.
Purchasing → Stock In → COGS Adjustment.

Key Features

Sales and purchasing with automatic stock adjustments.
Real-time stock overview with item-based cost tracking.
Receivables reminders based on payment due dates.
PDF reports for revenue, margin, and expense summaries.
Offline deployment for single-store operation (no online sync).

Tech Stack

Laravel Blade Tailwind MySQL

Infrastructure

GitHub Hostinger SSL Backup

About Me

Tech Stack & Tools

Experience

Projects

Harry Potter — Event Registration, Quiz & Word Game Platform

J&T Express — Seller & Returns Reporting

TMJS — E-Commerce & Stock Management

SSCP — BoQ (RAB) Management for Warehouse Project

AdminMetroJaya — Sanitary Store Management

Harry Potter — Event Registration, Quiz & Word Game Platform

J&T Express — Seller & Returns Reporting

TMJS — E-Commerce & Stock Management

SSCP — BoQ (RAB) Management for Warehouse Project

AdminMetroJaya — Sanitary Store Management

Harry Potter — Event Registration, Quiz & Word Game Platform — Gallery

J&T Express — Seller & Returns Reporting — Gallery

TMJS — E-Commerce & Stock Management — Gallery

SSCP — BoQ (RAB) Management for Warehouse Project — Gallery

AdminMetroJaya — Sanitary Store Management — Gallery