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I designed and developed IronLockBox, a secure digital vault built specifically for music creators to protect their creative work. The platform is designed to store and organize masters, stems, lyrics, sessions, artwork, contracts, and other important career assets. I worked across the product experience, including the Flutter mobile application, backend systems, secure file storage, authentication, vault organization, and creator-focused workflows.
The network for creativity
Join 1.25M professional creatives like you
Connect with clients, get discovered, and run your business 100% commission-free
Creatives on Contra have earned over $150M and we are just getting started
Related posts
I haven’t posted much lately because the work got intense.
Two Webflow builds I’ve just finished: MavBio and Jemba9.
One works with biomaterials for medical and research applications. The other builds mission-critical technology for the space industry.
Very different worlds, and genuinely exciting projects to work on.
I’ve also wrapped up a much larger wellness platform that is now being turned into a full case study, while a few new projects are already underway.
A small preview for now. More soon!
wow, the smoothness is mindblowing here
Activity: City-Based Activity Discovery & Booking Platform
Activity is a Kuwait-based mobile platform built to make discovering and booking local experiences simpler. Instead of searching separately for movies, parties, events, games, workshops, kids’ activities, fitness sessions, food experiences, and other things to do, users can discover activities around them, choose a time slot, complete the booking, and manage everything from one app.
The platform connects users with local vendors who organize activities around the city, turning activity discovery into a complete journey from finding something interesting to showing up for the experience.
The problem
Finding something to do often means checking multiple platforms, social pages, event listings, and individual booking services.
The challenge was to create a single experience where users could discover different types of activities based on their location and interests, understand the available options, select a suitable time, make a payment, and keep track of their bookings without switching between different services.
Activity brings those steps together by combining location-based discovery, search, filtering, time-slot booking, payments, favorites, and booking management in one mobile experience.
My role
Flutter development for iOS and Android
UI/UX implementation for activity discovery and booking
Location-based activity discovery and map integration
Search, filtering, favorites, and activity browsing
Booking and time-slot selection flows
Payment and booking confirmation integration
QR-based booking and attendance experience
Quality assurance and release testing.
Key features
Location-based activity discovery
Activity is built around discovering things to do nearby. Users can browse activities based on their location and use the interactive map to visualize available experiences around them. Activities can be filtered by location, type, and time slot.
Activity discovery and categorization
The app brings different types of experiences into one place, including movie screenings, parties, social events, indoor and outdoor games, kids’ activities, workshops, fitness, yoga, wellness, art, cooking, food experiences, and more.
Search and advanced filters
With a large and varied activity catalogue, simply displaying activities in a list would make discovery harder.
Activity details and time-slot booking
Once users find an activity, they can open its details, review the available information, select a preferred date, choose a suitable time slot, and book their spot.
The supplied booking flow shows this progression directly: activity details → date selection → time selection → Book Now.
Technical approach
Mobile: Flutter, Dart
Platforms: iOS and Android
Core modules: Location services, map-based discovery, search and filters, activity catalogue, favourites, booking management, time-slot selection, payments, QR-based booking confirmation
Integrations: Maps/location services, payment gateways, backend APIs
Product areas: User discovery, activity/vendor listings, scheduling, booking, payment, and attendance
The application was designed as a complete mobile booking experience rather than simply an activity catalogue, with the major product flows connected from discovery through attendance.
Engineering and product decisions
The biggest product challenge was balancing a large variety of activities with a simple discovery experience.
A user looking for a specific activity should be able to search and filter directly, while someone who simply wants to find something interesting should be able to browse suggested, featured, and recently viewed activities.
The booking flow was therefore kept closely connected to the activity itself: users move from the activity card to its details, select a date and available time, complete payment, and then access the reservation through My Bookings.
The project's clearest product distinction is this end-to-end flow: discover something to do → choose when to go → book the spot → manage the reservation → show up with the booking confirmation.
Outcome
Activity shipped as a mobile activity discovery and booking application for the Kuwait market, connecting users with local vendors and experiences across entertainment, activities, workshops, wellness, food, and other categories. The Android application is publicly available on Google Play and was updated on April 5, 2026.
The result is a single mobile experience that brings together local discovery, map exploration, search, scheduling, payments, favourites, booking management, and QR-based attendance.
The product idea is simple:
Find an activity.
Book your spot.
Just show up.
Nice work bringing discovery, time-slot booking, payments, and QR attendance into one flow. The highest-risk checks here are timezone or slot conflicts, payment success versus delayed confirmation, and QR redemption after reconnect. I run focused release QA and can turn around a...
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30-minute launch smoke check by Yi Zang
Read more about 30-minute launch smoke check by Yi Zang on Contra.
𝐄𝐧𝐭𝐞𝐫𝐩𝐫𝐢𝐬𝐞 𝐈𝐝𝐞𝐧𝐭𝐢𝐭𝐲 & 𝐀𝐜𝐜𝐞𝐬𝐬 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭 𝐏𝐨𝐫𝐭𝐚𝐥 | 𝐒𝐒𝐎, 𝐑𝐁𝐀𝐂 & 𝐌𝐅𝐀
𝐌𝐲 𝐫𝐨𝐥𝐞: Backend Engineer / Flask Developer
𝐏𝐫𝐨𝐣𝐞𝐜𝐭 𝐝𝐞𝐬𝐜𝐫𝐢𝐩𝐭𝐢𝐨𝐧:
I integrated Single Sign-On (SSO) using OpenID Connect into an existing Flask application. I implemented a secure authentication flow with a standard identity provider, enabling seamless and centralized login. I handled token validation, session management, and secure user identity processing. This reduced login friction while maintaining strong security standards, and I delivered a stable, production-ready authentication system within a tight deadline.
