I DESIGN SYSTEMS & BUILD SCALABLE APPLICATIONS.
I specialise in PHP, Laravel, React, and Next.js, and help businesses build and maintain web applications from the initial idea through production. I've worked on everything from MVPs and multi-tenant SaaS platforms to AI integrations and legacy backend modernisation.
I use LLM tools to speed up repetitive tasks and explore unfamiliar code. I keep the important engineering decisions—architecture, database performance, security, and business logic—under my own review.
System Flow Diagram
Interactive map of the application architecture and workflow. Click any block to explore the details.
Frontend Interaction Layer
Stack: Next.js, React.js, Tailwind CSS
Sends validated user queries and triggers state dispatches to the secure API Gateway.
WHAT I BUILD
Built projects from the initial idea through production, covering backend architecture, third-party integrations, and responsive frontend development.
SaaS App Development
Multi-tenant, highly scalable software-as-a-service platforms designed for reliable business operations.
API Development & Documentation
Clean, robust RESTful APIs built following strict spec-driven design principles.
Website & Web App Development
Tailored web applications focusing on fast load times, accessibility, and high conversion.
Database Architecture & Optimization
Structured, performant schemas designed to handle complex relationships and high traffic loads.
NPS & Survey Systems
Custom survey and customer loyalty metric systems with deep analytics and reporting.
Learning & Training Systems
Intuitive LMS platforms tailored for corporate onboarding and educational systems.
Landing Pages & Company Profiles
High-impact, high-converting digital storefronts built with impeccable speed and responsive layout.
E-commerce Development
Custom checkout systems, multi-currency features, and seamless gateway integrations.
Integrations & System Migrations
Legacy modernizations, syncing systems securely with ERPs, webhooks, and third-party APIs.
AI & Automation Tools
Injecting LLMs, automations, and intelligent agents into workflows via Zapier, n8n, and custom API layers.
TECHNOLOGY STACK
Tools and technologies I've used across real-world production systems.
Core Codebases
Application Structures
Storage Engines
User Interfaces
Payment & Comms
AI Technologies
Cloud & Orchestration
Workflow Tools
Web Management
WHY WORK WITH ME
My engineering approach focuses on reliability, clear requirements, and keeping systems easy to maintain as they grow.
PRODUCTION EXPERIENCE
I've built and shipped 40+ production applications, ranging from internal business systems to multi-tenant SaaS platforms.
CLEAR COMMUNICATION
Regular updates, clear feedback, and realistic timelines. You'll always know where the project stands and what comes next.
MAINTAINABLE CODE
Clean, modular, spec-driven engineering with clear boundaries. Easy for other developers to understand, modify, and extend as the product grows.
PROJECT PORTFOLIO
SaaSSightmill Multitenant SaaS NPS satisfaction
A secure, multi-tenant enterprise SaaS managing millions of real-time CX data points and complex integrations. Link: https://sightmill.com
SaaSMulti-Role SaaS Investment Platform
Built a multi-role investment platform connecting the idea owners with investors and partners using Laravel Inertia, React, TypeScript, MySQL, Bootstrap 5, Websocket, Reverb, Stripe, PeerJS and Postfix. Link: https://meetsidea.my.id
AI / AutomationAutomated Product Damage Validation & Hybrid AI Chatbot
I built an LLM-powered CS platform (cs.sinergivisi.my.id) that uses the Gemini API to automatically validate product damage claims. The core innovation is a fraud-prevention engine that compares user uploads against original photos to ensure authenticity. Link: https://cs.sinergivisi.my.id
SaaSScalable Customer Feedback Hub & Product Roadmap SaaS
Engineered a multi-tenant SaaS platform from MVP into a production system serving enterprise clients like Legal & General. The hub centralizes feature requests and product roadmaps.
E-CommerceFull-Stack E-Commerce Platform
Building an e-commerce platform (https://sinergivisi.my.id) for household tools. Users can make purchases and payments online, and the platform provides a REST API for use by MCP Toolbox. Claims for damaged or defective items are processed through AI agents or human agents, and recorded in claim reports. The platform consists of admin and buyer users, each with their own interface.
SaaSMulti-Tenant BI & Drag-and-Drop Reporting SaaS
Built Visorum, a multi-tenant BI & reporting SaaS as a lightweight alternative to Power BI. The platform connects to external data via REST APIs, enabling users to create visual dashboards with a drag-and-drop builder (GrapesJS). Link: https://visorum.debipraharadika.web.id/auth
Web ApplicationEnterprise Healthcare Training & Education Management System
Engineered a scalable web application to oversee the professional development of 800+ healthcare staff at a local hospital. This project required a complex modular architecture to build custom training, education, and reporting engines. I successfully integrated the new HTMIS with an existing Document Processing System and developed real-time analytics dashboards utilized by 20+ departments for budget planning. Link: https://sidik.debipraharadika.web.id/auth
Web ApplicationEnterprise SaaS EDMS & Document Workflow Automation
Developed an Electronic Document Management System (EDMS) used across multiple departments to replace paper-based workflows. I built the backend infrastructure for document routing, approvals, and secure file management. Link: https://unggahberkas.debipraharadika.web.id/
LET'S DESIGN A SYSTEM.
Whether you're building an MVP, a multi-tenant SaaS, a payment workflow, or an AI-powered feature, I can help take it from development through production.