Jayesh Jain

I designed and built a complete 3-sided on-demand car wash platform for a sustainability startup, 3 separate Flutter apps all live on the Play Store: a customer app (book a waterless car wash), a franchise app (manage operations, assign washers, track bookings), and a washer app (accept jobs, update job status in real time). I built the entire system from scratch, including real-time booking coordination across roles, role-based access control, and a Django/MongoDB back end. We launched a new engagement feature post-release that increased user engagement by 20%.

I built independently as a college startup: a Flutter app that aggregates live cryptocurrency prices, coin statistics, and global crypto news in a single interface. The core differentiator was NLP-based news filtering that surfaced relevant stories per coin rather than showing a generic news feed. I integrated multiple crypto data APIs for real-time price feeds and coin-level analytics. I built entirely solo from concept to working product, with no client brief and no team. This was the project that proved to me I could own a product end-to-end.

I built a 3-sided Flutter platform for an Ireland-based agricultural client: 3 separate apps for farmers (browse and order livestock products), sellers (list inventory, manage orders), and delivery agents (live GPS tracking, polyline routing, multiple drop locations). Each app has distinct role-based authentication, real-time order sync, and a shared back end.

I architected the full system independently, from database design to Play Store release. The live delivery tracking with multi-stop polyline routing was the most technically complex component, built without any pre-existing template.

I built a Flutter investment app that gives retail investors access to exclusive private-market opportunities; a high-trust, regulated domain that requires strict KYC onboarding, secure API flows, and a clean portfolio management UI. I implemented clean architecture with Bloc state management, integrated KYC verification, and designed investment flows with a focus on security and compliance. I delivered end-to-end, from architecture through Play Store release, for a fintech client operating in the capital markets.

I identified a recurring problem across multiple Flutter projects: mocking REST API responses during development always required modifying production code or adding heavyweight test dependencies. I built and published dummy_api_overlay on pub.dev: a lightweight Flutter developer overlay that intercepts both http and Dio network calls and returns configurable mock responses, with zero changes to production code. It supports both major HTTP clients out of the box. It got published openly for the Flutter developer community to use. This package reflects how I approach problems; when I hit friction repeatedly, I build the fix and share it.