Hi, I’m Angga. I’m a software engineer and entrepreneur, building digital products and solutions at Javapixa.

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Angga Adji Surya • Peerlist

<h3>About PayMux</h3>
PayMux is an open-source payment gateway multiplexer and webhook router designed to allow multiple applications to safely share a single payment gateway account. It provides each application with its own isolated API credentials, webhook destination, and data view, while the merchant maintains a single account and notification URL. This solution is particularly useful for managing payments across different applications without complex integrations or data conflicts.

<h3>Key Features:</h3>
<ul>
<li>Shared Payment Gateway: Enables multiple applications to use one merchant account securely.</li>
<li>Isolated Credentials: Each application receives unique API credentials and webhook destinations.</li>
<li>Centralized Notifications: Manages all gateway notifications in one place, ensuring they are verified and attributed correctly.</li>
<li>Normalized Events: Delivers consistent event data to each application, signed for security.</li>
<li>Transaction Management: Supports payment creation, status synchronization, cancellations, expirations, refunds, and partial refunds.</li>
<li>Disbursement: Facilitates secure outbound payments with configurable limits and approval workflows.</li>
<li>Dashboard: Provides an operations dashboard for managing payments, payouts, events, and gateways, with a responsive design for various devices.</li>
<li>Security: Implements robust security measures including signature verification, encrypted credentials, and secure password hashing.</li>
<li>Gateway Agnostic: Designed with an architecture that supports multiple payment gateways, with Midtrans currently supported.</li>
</ul>

<h3>Technical Details:</h3>
<ul>
<li>Built with Go and utilizes PostgreSQL for data storage.</li>
<li>The dashboard is developed using React, TypeScript, and Vite.</li>
<li>Supports Docker for deployment.</li>
<li>Employs security protocols like HMAC-SHA256, AES-256-GCM, and Argon2id.</li>
<li>Integrates with Prometheus for metrics.</li>
</ul>

<h3>Use Cases:</h3>
<ul>
<li>E-commerce platforms managing multiple storefronts.</li>
<li>SaaS providers offering integrated payment solutions.</li>
<li>Developers needing to consolidate payment processing across different services.</li>
</ul>

PayMux

<h3>This project provides automated daily summaries of WhatsApp group chats.</h3>
It leverages n8n for workflow automation, go-whatsapp-web-multidevice to interact with WhatsApp, and PostgreSQL for data storage. The summaries are generated using Google Gemini, an advanced AI model, ensuring structured and informative daily recaps.
Key features include:
<ul>
<li>One-step Quick Setup: Simplifies the process of setting up the system, allowing users to register groups and configure the database with minimal effort.</li>
<li>Multi-group Support: Capable of summarizing multiple WhatsApp groups simultaneously, with individual summaries sent to designated recipients.</li>
<li>Real-time Ingestion: Captures incoming messages in real-time via webhooks for immediate processing.</li>
<li>Deduplication: Ensures message integrity by preventing duplicate entries through unique message IDs.</li>
<li>Structured LLM Output: Utilizes Gemini's structured output capabilities to consistently extract topics and action items.</li>
<li>Accurate Statistics: Calculates message counts and active members directly from the database for precise reporting.</li>
<li>Fault Isolation and Alerts: Designed to handle individual group failures gracefully and includes an error alerting system to notify administrators of any issues.</li>
</ul>
The entire solution is delivered as exported n8n workflow JSON, meaning there is no custom application code or build process required. Users can import the workflows directly into their n8n instance, configure credentials, and start receiving daily summaries.

Daily WhatsApp group chat summaries

<h3>Innovative Digital Wedding Invitations</h3>
Paperlove offers a unique and engaging digital wedding invitation experience that goes beyond static images. Our website-based invitations feature cinematic animations, including an opening cover, a scrolling story timeline, parallax galleries, RSVP functionality, and a digital guestbook.

<h3>Key Features:</h3>
<ul>
 <li>Animated Elements: Experience a captivating opening envelope animation, a story that unfolds as you scroll, and parallax effects in the gallery.</li>
 <li>Personalized Experience: Invitations can greet guests by name, creating a more personal touch.</li>
 <li>Interactive RSVP: Guests can confirm their attendance, and the system counts the number of attendees per event.</li>
 <li>Digital Guestbook: Allow guests to leave their wishes and blessings.</li>
 <li>Digital Gift Options: Seamlessly integrate bank accounts, e-wallets, and QRIS for gift contributions.</li>
 <li>Responsive Design: Invitations automatically adjust animations for lower-spec devices, ensuring a smooth experience for all guests.</li>
 <li>Customizable Themes: Choose from 7 distinct themes, each with unique opening animations, story progressions, and gallery styles.</li>
 <li>Easy Management: All details can be updated anytime, with changes reflected instantly on the invitation link.</li>
</ul>

<h3>How It Works:</h3>
<ol>
 <li>Choose a Theme: Select from a variety of beautifully designed themes.</li>
 <li>Fill in Details: Input information about the couple, wedding events, story, photos, and gift preferences. A preview updates in real-time.</li>
 <li>Share with Guests: Distribute a single link or personalized links for each guest via WhatsApp. No app installation is required for guests.</li>
</ol>

Paperlove provides a modern, interactive, and memorable way to invite your guests to your special day.

Paperlove -  Undangan pernikahan digital

<h3>Event Photobooth &amp; Memory Collection</h3>
PhotoBum is a mobile-first platform designed to capture memories at any event. It allows users to create a dedicated event site in minutes, generate a unique QR code, and effortlessly collect photos, voice notes, and messages from guests directly through their mobile browsers, eliminating the need for any app downloads.
<ul>
<li>Instant QR Codes: A single QR code connects guests to the event, allowing them to start capturing memories immediately without any hassle.</li>
<li>Digital Photobooth: Guests can use their own smartphones as a photobooth, taking photos, recording voice messages, and leaving written notes.</li>
<li>Live Slideshow: All guest photos are displayed in a dynamic, Polaroid-style gallery and can be shown on a large screen at the venue as a live photo wall.</li>
<li>Voice Notes: Capture more than just photos by recording guests' voice messages, adding a personal touch to the memories.</li>
<li>Memory Downloads: Download all collected memories as framed Polaroid-style photos or as a video compilation with guest voice notes.</li>
<li>Analytics: Track page views, uploads, QR scans, and device types to understand guest engagement.</li>
<li>Customizable Themes: Choose from 5 different themes (Studio, Midnight, Canvas, Signal, Dusk) to match the ambiance of your event.</li>
</ul>
The setup is designed to be quick and easy, taking only two minutes to prepare an event space. Guests simply scan the QR code to contribute their photos and messages, which are then collected in a central digital gallery.

PhotoBum · Event Photobooth

<h3>Capture Every Precious Moment</h3>PhotoBum is a mobile-first wedding photobooth platform designed to help you capture every precious moment of your special day. With PhotoBum, you can create a dedicated event site in minutes, generate a unique QR code, and effortlessly collect photos, voice notes, and messages from your guests, all without requiring them to download an app.<ul><li>Instant QR Codes: Generate a single QR code that leads to a world of memories. Guests can scan and start capturing instantly, ensuring no one misses out.</li><li>Digital Photobooth: A full-featured photobooth experience directly in the browser. Guests can take photos, record voice messages, and leave heartfelt messages using their own phones.</li><li>Memory Gallery: All guest photos are collected in a beautiful, Polaroid-style gallery. Moments are saved, names are recorded, and stories are preserved for a lifetime.</li><li>Live Slideshow at Venue: Display all guest photos on a large screen, creating a dynamic photo wall that encourages more guests to participate.</li><li>Record Guest Voice Notes: Go beyond photos by capturing the authentic voices of your guests. 60-second messages that you'll cherish for years to come.</li><li>Downloadable Keepsakes: Save your memories as beautifully framed Polaroid-style photos or as video compilations featuring guest voice recordings.</li><li>Analytics: Track page views, uploads, QR scans, and device types to understand how your guests are interacting with the platform.</li><li>Customizable Themes: Choose from 6 elegant themes (Classic, Modern, Luxury, Boho, Pastel, Rustic) to perfectly match the ambiance of your wedding day.</li></ul><h3>How It Works</h3>Setting up is incredibly simple and takes just 2 minutes:<ol><li>Prepare Your Moment: Enter the couple's names, select a theme, and set the date. Your digital memory space is ready in no time.</li><li>Distribute the QR Code: Print and place QR codes around your venue. Each scan opens up a new story to be captured.</li><li>Capture Together: Guests take photos, record voice messages, and write greetings. All memories are collected in one place, forever.</li></ol>PhotoBum ensures that every laugh, blessing, and tear of joy from your guests is gathered into one everlasting memory.

PhotoBum

<h3>Masjidku App: Platform Manajemen Masjid Gratis</h3>
Masjidku App adalah solusi komprehensif yang dirancang untuk memberdayakan pengurus masjid di seluruh Indonesia dengan teknologi modern. Platform ini bertujuan untuk menyederhanakan berbagai aspek pengelolaan masjid, mulai dari kemudahan infaq digital, transparansi keuangan yang akuntabel, penjadwalan kegiatan keagamaan, hingga pengelolaan zakat yang efisien.
Dengan Masjidku App, pengurus masjid dapat dengan mudah:
<ul>
<li>Mengelola Profil Masjid: Hadirkan wajah digital masjid Anda dengan informasi lengkap mengenai profil, kepengurusan, dan kegiatan.</li>
<li>Fasilitasi Infaq Digital: Mudahkan jamaah dalam menunaikan infaq kapan saja dan di mana saja melalui berbagai kanal pembayaran digital yang terintegrasi.</li>
<li>Transparansi Keuangan: Sajikan laporan keuangan yang terbuka dan dapat diakses oleh seluruh jamaah, membangun kepercayaan dan akuntabilitas.</li>
<li>Manajemen Zakat: Kelola data muzaki dan mustahik secara sistematis, serta catat penyaluran zakat sesuai dengan prinsip syariat.</li>
<li>Jadwal Kegiatan: Informasikan jadwal shalat, kajian rutin, pengajian, dan acara keagamaan lainnya agar jamaah selalu terinformasi.</li>
<li>Dokumentasi &amp; Galeri: Abadikan momen-momen berharga masjid dan tampilkan dalam galeri yang menarik.</li>
<li>Layar TV Masjid: Tampilkan jadwal shalat, pengumuman, dan informasi penting lainnya secara otomatis di layar besar masjid.</li>
<li>Laporan Otomatis: Dapatkan ringkasan infaq, keuangan, dan aktivitas masjid untuk pengambilan keputusan yang lebih baik.</li>
</ul>
Masjidku App hadir sebagai ikhtiar digital untuk memakmurkan rumah Allah, menghubungkan masjid dengan jamaahnya, dan membangun ekosistem digital yang amanah, tertata, dan bermanfaat bagi seluruh umat.