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Case study · Mobile

Multi-role Flutter app

Release candidate on sandbox (documented)

HomePro SG gives homeowners one place to find, request and book local home-service pros, and gives those pros a workspace for leads, jobs, schedules and repeat customers. Platform staff qualify and route requests. The release candidate covers the full request-to-job-to-appointment journey on a cloud sandbox.

HomeProSG category page for home cleaning: services from different pros with ratings, price models and View providers.
Category services
HomeProSG provider profile: rating and reviews, contact actions, team size, recent projects, Message and Book now.
Provider profile
Actual application render · Flutter web build 78dda9e497 at phone width · demo data
  • 98screenscustomer 38 · provider 38 · admin 8 · platform 1 · shared 13
  • 20feature modulesdata, domain and providers layers
  • 18CDK domain stacks103 Lambda-resolved operations

Overview

A Flutter app for web and mobile with four role domains (consumer, provider, admin, platform) and 98 typed routes. The data layer follows clean architecture: 20 feature modules with DTO, mapper and repository seams, Riverpod providers, and a single typed error seam so no raw wire strings reach the UI.

Authentication uses Cognito; authorisation is account-scoped through custom token claims minted by a pre-token-generation trigger. A runtime data-plane switch, fail-safe and remotely configured, moved the client from the original managed GraphQL API to a dedicated CDK-built one on the same user pool, with no re-login, keeping the original as a rollback plane.

A token-based design system and slotted screen layouts unify 98 screens. Delivery ran as four contract-gated workstreams under a coordinator, ending in a documented release candidate on the sandbox backend.

Visual evidence

HomeProSG customer home: greeting, service search, top categories and featured services with prices and ratings.
Customer home
HomeProSG category page for home cleaning: services from different pros with ratings, price models and View providers.
Category services
HomeProSG provider profile: rating and reviews, contact actions, team size, recent projects, Message and Book now.
Provider profile
HomeProSG booking request, step 6 of 10: choosing a date in the next 21 days and an open time window.
Booking request, date and time
HomeProSG provider dashboard: business stats, a revenue chart and job leads, jobs, schedule and messages navigation.
Provider dashboard
Actual application render · Flutter web build 78dda9e497 at phone width · demo data

Part of

HomePro SG

A multi-role home-services platform.

Other case studies in this project

  • Cloud backend

    HomeProSG — AWS CDK Backend & Infrastructure

    The app's backend outgrew its managed platform: at about 84 operations, deployments hit a hard cloud limit. I rebuilt it as a dedicated AWS CDK GraphQL backend that reuses the same user accounts and database, so nothing had to be migrated, then added CRM, job and scheduling workflows and proved them against sandbox data.

    Implemented · sandbox deploy documented