Projects — Jihad Hasan Joy
Featured Projects
A selection of products I've helped build and ship
DBforKids
Children's digital banking — SGKB, GKB
An educational pocket-money app teaching children aged 6-13 responsible financial habits, with savings goals, quizzes, and parental monitoring through an Eltern-Cockpit. One codebase serving both banks.
- Led the frontend and mobile teams across the shared product
- Architected per-bank theming and configuration so both institutions ship from a single codebase
- Built savings goals, quizzes, and offers alongside the parental monitoring cockpit
- Worked with the backend developers on the Spring Boot APIs — shaping request and response contracts and debugging integration issues end to end
GKB Gioia 3a
Pension app — Graubundner Kantonalbank
A secure pension management app for Graubundner Kantonalbank allowing users to open, monitor, and manage 3a investment accounts digitally with optimized performance and seamless UX.
- Led the frontend team and built the React Native client and its account-opening flow
- Integrated Onfido remote identity verification and Matomo funnel analytics
- Tuned onboarding drop-off and app performance on lower-end devices
- Worked with the backend developers on the Spring Boot APIs — shaping request and response contracts and debugging integration issues end to end
X4T
Cryptocurrency exchange — Paraguay
Paraguay's leading crypto exchange — a fully on-chain, zero-fee trading platform supporting 8,000+ assets across seven blockchain networks (Bitcoin, Ethereum, Solana, BSC, Arbitrum, Polygon, Tron), with cross-chain bridging, Guaraní/USD fiat rails, and institutional-grade custody.
- Led the project end to end — web, mobile, and Node.js backend architecture
- Built multi-chain trading, bridging, and wallet interfaces against live market data
- Integrated custody, compliance screening, and biometric app login for regulated operation
Convenience Pay (Unipet)
Fuel payment network, Unipet — Trinidad & Tobago
A payment platform for Trinidad and Tobago's petroleum sector — enabling sales tracking and smart card–based payments for fleet and merchant customers nationwide.
- Led frontend architecture for the Angular platform and its admin tooling
- Built the reporting suite serving fleet, merchant, and internal user types
- Optimized content delivery and runtime performance for large transaction datasets
- Worked with the backend developers on the Spring Boot APIs — shaping request and response contracts and debugging integration issues end to end
Finsy
Pension & personal finance platform — Switzerland
A holistic finance app that consolidates income, expenses, insurance, and pension planning into one intuitive platform — helping users monitor, simulate, and optimize their financial life.
- Led the frontend team and designed the shared web and mobile architecture
- Built the Angular web client and React Native app against one API surface
- Delivered in-app video calls and chat connecting users to consulting experts
- Worked with the backend developers on the .NET Core APIs — shaping request and response contracts and debugging integration issues end to end
ShopperOn
Live shopping marketplace — UAE
A live shopping marketplace connecting users with trusted brands through real-time video commerce. Features live hosts, in-stream purchases, cashback rewards, and authentic deal discovery.
- Led the frontend team and designed the web and mobile architecture
- Built live streaming and in-stream purchase flows on Agora
- Shipped the buyer app to the App Store and Play Store
- Worked with the backend developers on the .NET Core APIs — shaping request and response contracts and debugging integration issues end to end
Samurai Screen
Digital signage network
A wireless, real-time digital signage network delivering scalable advertising content to millions of screens globally — offering dynamic reach for advertisers across any location.
- Built the Angular application for content scheduling and delivery
- Implemented drag-and-drop campaign composition against a live screen network
- Built the ASP.NET Core REST APIs backing content scheduling and screen management