Penulis Kode

Full Stack Developer

Sebastian Wirajaya — the mind behind Penulis Kode — is a full-stack developer with more than 10 years of experience, focusing on responsive UI/UX, system security, and ease of maintenance.

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Skills & Experience

PHP ReactJS React Native Laravel CodeIgniter WordPress CMS MySQL Bootstrap Tailwind CSS HTML CSS Javascript

NAVIGATION

Social Media

About

Let’s build something great!

I help businesses and individuals build modern, responsive websites and applications. With over 10 years of experience, I focus on clean, responsive UI/UX, system security, and ease of maintenance. More than 100 clients have trusted Penulis Kode as their web/app developer for their business.

Penulis Kode is available for remote opportunities worldwide.

Experience +10 years

Projects 100+ completed

Location Denpasar, Bali, Indonesia

Services

What I can do for you

Website Development

Building websites from scratch all the way to production, end-to-end. Landing pages & company profiles, e-commerce, POS (Point of Sale), admin dashboards & management panels, and even custom web apps. Just tell Penulis Kode what you need.

CMS Website

I create CMS-based websites that are easy for clients to manage — such as WordPress and similar platforms.

Mobile Apps

I build mobile apps for both Android and iOS, designed to work across devices with modern, responsive UI/UX.

REST API Development & Integration

I build and integrate APIs for web and mobile applications — including authentication, third-party API integrations, API documentation, and more.

Maintenance, Optimization & Support

For websites or apps that are already running and need improvement — server & deployment, bug fixing & feature enhancements, refactoring & clean architecture, speed & performance tuning, monitoring & backups. Just get in touch with Penulis Kode.

SMM Panel Business

Penulis Kode is highly experienced in this field and has been a pioneer of Social Media Marketing Panel services in Indonesia through BeliSMM.com

Portfolio

Selected projects (most work is private 😉)

Tuksedo Studio

Tuksedo Studio, a Balinese company specializing in classic car replicas, has trusted Penulis Kode twice to develop their website.

Web Development Slicing UI Admin Panel Company Profile

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Irvan Kede SMM Panel

Irvan Kede and hundreds of other business owners have relied on Penulis Kode to power their social media marketing panels through BeliSMM.com.

SMM Panel Website Development Admin Panel

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Bali For Two

Bali For Two has trusted Penulis Kode to build their website.

WordPress Company Profile

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DapurBox

DapurBox has trusted Penulis Kode to build their website and mobile apps.

Mobile Apps Web Development Admin Panel Company Profile

Seamore Papua

Seamore Papua has trusted Penulis Kode to build their website.

WordPress Company Profile

Bottle O Bali

Bottle O Bali has trusted Penulis Kode to build their website.

WordPress Company Profile

Etno Bali

Etno Bali has entrusted Penulis Kode as their website developer.

Website Development e-Ticketing Admin Panel Company Profile

Contact

Let's talk about your project

Tell Penulis Kode what you need for your website or apps, and I will get back to you soon with the best approach, development timeline, and budget estimate.

hello@penuliskode.com

+62 851-7991-1437

Preferred

Mon - Fri 09:00 - 21:00 WITA