Full-Stack Developer / Product Builder · Jakarta, ID

I build digital products from idea to interface.

Bridging product intuition, system architecture, and interface craft. Specialized in high-performance web applications, developer platforms, and thoughtful user experiences.

Based in Jakarta, Indonesia
Full-stack · Product · UI/UX
● Available for selected opportunities
01 // SELECTED WORK

A curation of production systems, developer tools, and workflow platforms designed and engineered end-to-end.

vintar.id // multi-tenant-router
🏆 2nd Place Community Hackathon · Best Website Nominee
ArchitectureSubdomain Multi-Tenant
Checkout Speed< 1.2s Flow
Settlement100% Dynamic QRIS
Award2nd Place Hackathon
● [SYSTEM READY] Multi-tenant router initialized across *.vintar.id
[09:14:02] [DNS] Subdomain matched: merchant-store.vintar.id -> tenant context isolated
[09:14:02] [PAY] Midtrans Dynamic QRIS webhook reconciled · zero-leak transaction payload
01 / VINTAR
Year: 2026
Role: Lead Product Designer & Full-Stack Developer
Stack: Next.js 15 · PostgreSQL · Midtrans

Creator commerce & D2C multi-tenant platform, simplified.

A high-performance multi-tenant D2C commerce platform enabling independent creators & merchants to launch self-managed stores with automated payments.

View case study
hubz.my.id // dynamic-slugs8+ Sites Deployed
Rotating Aesthetic Archetypes:
Warm EditorialClean PrecisionBold DarkSwiss ModernArtisan Craft
DEPLOY API: POST /api/jules/deploy · Atomically registers slug in PostgreSQL
02 / HUBZ

Autonomous web agency engine & instant landing page platform.

An automated platform orchestrating AI business intelligence, automated bespoke web generation, instant deployment API, and WhatsApp CRM pipelines.

Year: 2026
Role: Platform Architect & Full-Stack Automation Engineer
Stack: Next.js · PostgreSQL · Tailwind · WhatsApp Gateway
03 / AutoAffiliate

AI video generation SaaS with hybrid licensing & concurrency locks.

A commercial SaaS ecosystem combining lifetime access, pay-as-you-go video generation credits, task queues, and strict 2-device concurrency protection.

Year: 2026
Role: Lead Full-Stack Engineer & Product Architect
Stack: Next.js 14 · PostgreSQL (Auth & RLS) · Device Fingerprint
autofilliator.vercel.app // session-guard2-Device Lock Active
Session Guard:Active Device 1 (Mobile), Device 2 (Desktop)
Monetization Model:Lifetime Software + Pay-As-You-Go Credits
Credit Ledger Integrity:Zero-Leak ACID Atomic Commits
04 / Joyzone Electronics
Year: 2025
Role: Fullstack Developer & Technical SEO Specialist
Stack: React 19 · Next.js · Geocoding API · JSON-LD · PostgreSQL

High-performance hardware marketplace & 10-module admin control panel.

A high-throughput electronic components marketplace with a 5-step transactional checkout, geocoding address verification, and 10-module inventory control.

View case study
02 // PHILOSOPHY & ETHOSProduct Engineering Standards
01 // Understand The Problem

Problem-First Architecture

Software exists to eliminate real-world friction. Understanding business constraints and user frustrations leads to simpler, more resilient technical implementations.

02 // Keep Complexity Invisible

Invisible Complexity

Behind a zero-friction 3-step checkout lies defensive state machines, atomic balance deduction, and idempotent webhook reconciliation. Simple interfaces require disciplined engineering.

03 // Build → Ship → Learn

Continuous Deployment

A working system in the hands of real users beats months of theoretical planning. Build the highest-leverage version, test in production, and iterate rapidly based on telemetry.

03 // EXPERIENCE2025 - PRESENT
2025 - 2026
Fullstack Developer Intern@ PT. Joyzone Electronics

Directing core product architecture, multi-tenant workspace isolation, and high-performance real-time checkout pipeline with 10-module admin dashboard and geocoding address validation.

2026
Lead Full-Stack Engineer@ Vintar D2C Platform

Architecting multi-tenant subdomain router (*.vintar.id), passwordless WhatsApp OTP authentication microservice, and atomic Midtrans Dynamic QRIS webhook reconciliation.

2026
Full-Stack Developer & CRO@ bantuanordal.id

Engineering a high-converting educational funnel featuring an in-browser real-time ATS resume diagnostic simulator, achieving a perfect 100/100 Google Lighthouse score, and instant WhatsApp lead capture.

04 // SCOPE OF PRACTICE

I work across the stack - from product thinking and interface design to backend systems and automation.

/ PRODUCT/ UI/UX/ FRONTEND/ BACKEND/ DATABASE/ API/ AUTOMATION
Rafa Khaizuran
Rafa KhaizuranJakarta, Indonesia
05 // ABOUT THE BUILDER

Rafa Khaizuran - Full-Stack Developer & Product Builder.

I'm a full-stack developer and product builder focused on the intersection of engineering rigor, design elegance, and real-world business value. From architecting the hackathon-winning VINTAR multi-tenant commerce platform to building the HUBZ autonomous agency engine and enterprise SIMRS ERP modules in Odoo 19.

My approach is grounded in clarity: eliminate unnecessary complexity, prioritize transactional reliability and sub-second checkout speeds, and craft sharp, Swiss-inspired typographic interfaces.

EducationSMA Angkasa 2
Honors2nd Place Hackathon
LocationJakarta, ID
StatusAvailable
06 // CAPABILITIES & TOOLINGSELECTED TECHNOLOGIES
FRONTEND
Next.js · React · TypeScript · Tailwind CSS
BACKEND
Node.js · Go · Distributed Systems
DATABASE
PostgreSQL · Prisma · Redis
DESIGN
Figma · Design Systems · Prototyping
AUTOMATION
Workflow Engines · APIs
CURRENTLY // NOW
JAKARTA, ID · 2026
BUILDING

Multi-tenant commerce & autonomous engines

Scaling isolated subdomain routing in Vintar, sub-1.2s checkouts with Dynamic QRIS, and multi-archetype web deployment automation in HUBZ.

LEARNING

Distributed systems & event-driven architecture

Investigating background worker queues, idempotent webhook reconciliation, and defensive transaction state machines across backend layers.

EXPLORING

Local-first workflows & self-hosted micro-services

Benchmarking lightweight VPS orchestration, defensive database schemas in PostgreSQL, and hybrid software monetization models.

Get in touch

Have an idea worth building?

Let's turn it into a high-performance, working digital product.