Available for work

I'm a Software Engineer
who builds SaaS products

I help startups, businesses, and individuals transform ideas into reliable digital products. From frontend experiences to backend systems and deployment, I build solutions with clean architecture and modern technologies.

10+

Projects Built

15+

Technologies Used

100+

GitHub Contributions

Projects & Products

A selection of client work and products I've built.

in development

Gradexa

AI-Powered Examination Platform

A SaaS examination platform designed for schools, universities, bootcamps, and training providers. Gradexa combines secure examination workflows, multi-tenant organization management, and AI-assisted essay evaluation in one scalable platform.

Role: Full Stack Engineer & Product Builder

  • Multi-tenant organization and role management
  • AI-assisted essay evaluation
  • Secure and scalable examination workflows
Next.jsTypeScriptGoPostgreSQLSupabaseDockerAI
Gradexa AI-Powered Examination Platform preview

School Management System

A web-based management system for handling student data, transactions, payments, and operational workflows.

LaravelMySQLPHPBootstrap

AI Development Workflow

Experimenting with AI-assisted software development workflows using modern AI tools, automation, and developer productivity techniques.

LLMAI ToolsAutomation

Developer Portfolio

A modern personal website focused on showcasing engineering skills, projects, and product-building capabilities.

Next.jsTypeScriptTailwind CSS

School Payment Management System

A web-based system for managing student payments, billing records, invoices, discounts, and transaction history. The application helps school administrators monitor payment statuses and handle financial workflows more efficiently.

LaravelPHPMySQLTailwind CSS

School Library Management System

Implemented and customized a school library management system using SLiMS to support book cataloging, member management, borrowing, returns, and day-to-day library operations.

SLiMSPHPMySQLLibrary Management

News & Content Portal

A responsive news and content publishing website designed to organize articles by category, simplify editorial workflows, and provide readers with a clear and accessible browsing experience.

LaravelCMSResponsive DesignSEOContent Management

About & Experience

A little about my background and the work I do.

Engineering products end to end

I'm a full-stack software engineer with 3+ years of professional experience building and maintaining web applications. My experience spans responsive frontend development, API integration, backend systems, databases, deployment, and technical support. I enjoy turning business requirements into reliable, maintainable, and user-friendly digital products.

Jun 2020 — Present

Independent

Freelance Software Engineer

Built and maintained custom web applications for clients across education, operations, and business domains. Worked across requirement analysis, frontend and backend development, database integration, deployment, troubleshooting, and ongoing product improvements.

Aug 2022 — Mar 2026

Y Ventures Group

Software Engineer

Developed and maintained web applications using modern frontend technologies, including React, Next.js, and TypeScript. Worked on responsive user interfaces, API integrations, internal systems, bug fixes, and product improvements based on business requirements.

Jun 2021 — Aug 2022

PT. Sarana Baja Perkasa

IT Support Specialist

Supported daily IT operations in a manufacturing environment by troubleshooting hardware, software, and network issues, maintaining computer systems, and assisting employees with technical problems.

Tech Stack

Technologies and tools I use to bring ideas to life. Scroll to speed them up.

React
Next.js
TypeScript
Tailwind CSS
Node.js
Docker
PostgreSQL
Git
AWS
GraphQL
Laravel
Figma
Claude Code
OpenAI Codex
GitHub Copilot
Flutter

How I Build Products

A simple process that keeps projects focused, transparent, and efficient.

01

Discover

Understand your goals, users, and technical requirements before writing any code.

02

Plan

Design the architecture, define milestones, and choose the right technologies for long-term scalability.

03

Build

Develop clean, maintainable, and performant applications with frequent progress updates.

04

Launch & Improve

Deploy confidently, monitor performance, fix issues, and continuously improve the product.

Great products aren't built in one sprint—they're built through collaboration, iteration, and continuous improvement.

Services

Flexible engagement models — from landing pages to full product builds.

Landing Page

Modern landing page for businesses, products, or personal brands.

Custom Quote

Based on scope and requirements

  • Modern responsive design
  • SEO-friendly structure
  • Animation & interactions
  • Deployment setup
Most Popular

Web Application

Custom web applications with frontend, backend, database, and integrations.

Custom Quote

Based on scope and requirements

  • Custom UI implementation
  • Backend API development
  • Database design
  • Authentication system
  • Deployment & optimization

SaaS Product Development

Complete product development from idea validation to production launch.

Custom Quote

Based on scope and requirements

  • System architecture
  • Full-stack development
  • Cloud deployment
  • Third-party integrations
  • AI feature integration
  • Long-term improvement

Let's Work Together

Have a project in mind or want to discuss a collaboration? I'd love to hear from you.

Building digital products with clean code and thoughtful engineering. © 2026 Rachmat Japasima.