Loading case study...
Loading case study...
Full-stack marketplace connecting real estate agents with contractors for property services, featuring advanced architecture and multi-role authentication.
Implemented sophisticated DDD/CQRS architecture with dual MVC migration strategy
Built comprehensive multi-role authentication system with Firebase integration
Designed scalable Flutter application with 30+ features using Clean Architecture
Created production-ready backend API with advanced error handling and logging
Revux is a niche real estate marketplace platform that connects real estate agents with trusted local contractors for property services.
Similar to freelance marketplaces but specifically designed for the real estate industry, Revux offers enhanced trust and security through its local focus and rigorous vetting process.
The platform enables agents to hire contractors for services including photography, videography, staging, drone photography and videography, and other property-related services.
The platform was designed to leverage Zelio's connections in the Calgary real estate market, with a strategic focus on building a trusted network of local contractors. The business model emphasized quality over quantity, with a thorough vetting system to ensure high standards for all contractors on the platform.
Key Differentiators:
As the sole developer and system architect, I designed and implemented the backend API architecture and core infrastructure, demonstrating expertise in enterprise-level patterns, scalable architecture design, and modern development practices.
The project reached the dashboard implementation stage before development was paused.
Real estate agents frequently need to hire contractors for property services like photography, videography, staging, and drone photography, but struggle to find reliable, vetted professionals.
Existing freelance platforms are too generic and don't cater to the specific needs of the real estate industry, lacking the local trust and security that real estate professionals require. Contractors, on the other hand, lack a specialized platform to showcase their services to real estate professionals.
Market Opportunity:
Key Requirements:
Find vetted professionals
Used by: Agents, Agencies
Schedule appointments
Used by: Agents, Contractors
Create service bundles
Used by: Agencies
Secure transactions
Used by: Agents
Contract management
Used by: Agents
Real-time communication
Used by: Agents, Contractors
Approval workflow
Used by: Admins
Real estate agents
Uses: 5 use cases
Service providers
Uses: 2 use cases
Real estate agencies
Uses: 2 use cases
Platform administrators
Uses: 1 use case
Actors are associated with use cases they interact with (shown in use case descriptions)
I implemented a sophisticated dual architecture pattern to demonstrate both traditional and modern approaches:
src/modules/*//agencies, /contractors, /ordersFeature-based organization: src/modules/*/
src/modules/*/domain/, */application/, */infrastructure//v2/agencies, /v2/contractorsOrganized: domain/, application/, infrastructure/
Project Status: On Hold - Backend architecture complete, frontend in early stages
I implemented Domain-Driven Design (DDD) with CQRS (Command Query Responsibility Segregation) to handle the complex business domain.
Orders, for example, were modeled as aggregate roots with built-in validation to ensure business rules were enforced (like preventing orders with negative totals or no services).
The architecture separated commands (write operations like CreateOrder, ConfirmOrder) from queries (read operations like GetOrder, SearchOrders), allowing independent optimization of read and write paths. I used the Repository pattern to abstract data access, making it easy to swap data sources or add caching layers later.
Flexible Search Architecture:
serviceIds[])Conditional Entity Inclusion:
I implemented flexible API endpoints that allowed clients to request related data conditionally.
For example, fetching a contractor could optionally include their user profile and portfolio by adding query parameters like ?includeUser=true&includePortfolio=true. This reduced unnecessary data transfer and improved performance.
Comprehensive Error Handling:
Status: Frontend development was in early stages using Flutter. The project reached the dashboard implementation stage before development was paused.
Completed Frontend Features:
Planned Frontend Architecture:
The frontend was designed to use Flutter with Clean Architecture and feature-first organization:
lib/features/<feature>/
āāā domain/ # Business logic & entities
āāā data/ # Data layer with repositories
āāā presentation/ # UI layer with BLoC
āāā service_injection.dart # Dependency injection
Planned State Management:
flutter_bloc for predictable state managementKey Features Designed:
Firebase Firestore Structure:
Security Rules:
I configured Firestore security rules to ensure users could only access their own data. Orders were accessible only to the agent and contractor involved in that specific order.
This client-side security layer worked alongside backend validation to provide defense in depth.
Browse vetted contractors by service type, location, and availability
Choose individual service or bundled package from agency
Select specific date and time for contractor service
Process payment via Stripe and share/sign contracts
Agent and contractor communicate via in-app messaging
RESTful Endpoints:
/v2/agencies - Real estate agency management/v2/contractors - Contractor profiles, services, and vetting status/v2/orders - Order processing and tracking/v2/bookings - Booking system for scheduling contractors/v2/packages - Service package management for agencies/v2/services - Service catalog management/v2/messages - Real-time messaging system/v2/documents - Document sharing and signing/v2/payments - Payment processing integrationResponse Format:
All API endpoints returned a consistent response format with success flags, data payloads, error details, and pagination metadata.
This made it easier for frontend developers to handle responses uniformly and provided clear error messages when something went wrong.
Important: This project is currently on hold. Development has been paused, but the core backend architecture and infrastructure are complete.
The project reached the dashboard implementation stage before being put on hold. The backend is production-ready, but the frontend mobile application is incomplete.
Completed Backend Features:
Backend Infrastructure:
Not Completed:
Future Plans (when development resumes):
DDD/CQRS Benefits:
Challenges:
Firebase Trade-offs:
Widget-Driven Development:
Feature-First Organization:
Dual Architecture Strategy:
Revux represents a comprehensive demonstration of modern backend architecture and system design, showcasing advanced architectural patterns, enterprise-level code organization, and scalable design principles.
The project successfully handles a complex business domaināconnecting real estate agents with trusted contractorsāwhile maintaining clean separation of concerns and preparing for future growth.
The dual architecture approach demonstrates both traditional MVC patterns and modern DDD/CQRS implementation, providing valuable insights into architectural evolution and migration strategies.
The backend infrastructure was designed to support a niche marketplace with specific requirements including booking systems, service packages, vetting workflows, and document management.
Key Business Value:
Technical Achievements:
This project serves as an excellent example of how to architect scalable, maintainable applications for niche markets while maintaining code quality and developer productivity.
The comprehensive backend architecture demonstrates professional development practices and architectural maturity, ready for frontend implementation when development resumes.
Note: This project is currently on hold. The backend architecture and core infrastructure are complete, and the project reached the dashboard implementation stage. Development will resume when resources become available.