I'm Rizwan Ullah, a software architect and hands-on engineer with 20 years in software, and founder of Curiologix (Lahore, 2011).
I’m Rizwan Ullah, a software architect and hands-on engineer with 20 years in software, and founder of Curiologix (Lahore, 2011).
I designed and lead Xeboki, a multi-tenant cloud point of sale for retail and restaurants: Flutter till, back office, kitchen display and ordering apps, a Next.js web shop and a FastAPI API, with each business’s data in its own Firebase project. Six more SaaS products run on the same account and developer API.
I’ve also shipped live TV and on-demand video apps for Awaan (Dubai Media) and ADtv (Abu Dhabi Media) on iOS, Android, Apple TV and Android TV, and marketplaces such as U’GO Pros.
Top Rated on Upwork with 100% Job Success. I take products from architecture and MVP to store release, monitoring and support, working to US, UK and European time zones.
Developed the native iOS and Android StepUp Pedometer apps to the client's requirements and supported them after launch. Daily steps, goals and streaks, history Step challenges with friends on iPhone and Android Live: Google Play](https://www.twine.net/signin
Built the native iOS and Android apps for The Wave Clock: an analog clock face showing wave height and period, tide height and trend for hundreds of coastal spots, from real-time oceanographic data. Live: App Store](https://www.twine.net/signin · Google Play](https://www.twine.net/signin · thewaveclock.com](https://www.twine.net/signin
Lead mobile developer on Shire Rewards, a native iOS (Swift) and Android (Kotlin) loyalty app. Earn, track and redeem points at local businesses QR code scanning and reward redemption Push notifications and secure sign-in Live apps: App Store](https://www.twine.net/signin · Google Play](https://www.twine.net/signin
Lead iOS and Android developer on one streaming codebase behind national broadcasters' apps: Awaan (Dubai Media), Ayn (Oman Ministry of Information), SABC+ (South African Broadcasting Corporation) and 51 Kuwait (Kuwait Ministry of Information). Live TV and video on demand on iOS, Android, Apple TV and Android TV HLS streaming, DRM, in-app subscriptions and analytics Live apps Ayn: App Store](https://www.twine.net/signin · Google Play](https://www.twine.net/signin SABC+: App Store](https://www.twine.net/signin 51 Kuwait: App Store](https://www.twine.net/signin
Lead React Native developer on Minti, a cross-platform recruitment and social networking app that connects job seekers with employers. Job listings, profiles and applications Real-time chat and push notifications Secure sign-in (Firebase, REST API) Live apps: App Store](https://www.twine.net/signin · Google Play](https://www.twine.net/signin
Developer on a live food-ordering platform that runs 15+ UK restaurant brands from one shared codebase. Five apps iOS customer app (Swift) Android customer app (Kotlin) Web ordering site (JavaScript + Firebase Cloud Functions) Android POS for staff to receive, manage and refund orders POS on the Go: a browser POS for orders and menus What it does Stripe card payments with 3D Secure, duplicate-charge protection, refunds and recovery of paid orders when a connection drops Nash delivery: a courier is booked for every delivery order; jobs can be tracked or cancelled from the POS Menu manager with extras and time-based sections, delivery and collection, scheduled pre-orders, fees and tips, kitchen and receipt printing, live order status Loyalty points, stamp cards, promo codes and discounts, calculated the same way on every platform Live apps Gatley Tandoori: App Store](https://www.twine.net/signin · Google Play](https://www.twine.net/signin The Grubfellas: App Store](https://www.twine.net/signin · Google Play](https://www.twine.net/signin Burger & Co: App Store](https://www.twine.net/signin · Google Play](https://www.twine.net/signin Cleo's Nashville Kitchen: App Store](https://www.twine.net/signin · Google Play](https://www.twine.net/signin
Designed and led a multi-tenant cloud POS platform with separate projects per business, including Flutter apps for POS flows, Next.js web shop, and FastAPI APIs with Firebase and per-business data storage for privacy. Built and operated an Xeboki platform family behind one account and one developer API key, including AI support, integration and tooling products, SaaS billing, and analytics. Delivered streaming solutions (live and VOD) for iOS, Android, Apple TV, and Android TV using HLS and DRM, including in-app subscriptions and analytics. Delivered marketplace/e-commerce apps for international clients and managed a remote team across mobile, web, AI, and embedded workflows, including payments, multi-location inventory, purchasing, loyalty, gift cards, scheduling, and payroll.
Built web applications across multiple tiers using ASP.NET, C#, JavaScript, and SQL Server. Integrated salesforce workflows and approval processes, automating parts of the sales and approval lifecycle through web application integration.
Built ASP.NET and Visual Basic applications on SQL Server and improved performance by refactoring legacy code (~25% performance improvement). Led/owned a real-time data analytics application to surface timely insights for users.
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