Subscription-based multi-role SaaS backend with authentication, billing, notifications, coupons, savings, support messaging, and admin operations.
Lountandingcam is a production-ready SaaS backend built with FastAPI to manage secure user accounts, role-based access, subscription billing, coupon and savings workflows, push notifications, support communication, content modules, and admin operations from one scalable backend system.
A backend-first summary of the product problem and the solution direction behind the full project delivery.
Lountandingcam is a production-ready SaaS backend built with FastAPI to manage secure user accounts, role-based access, subscription billing, coupon and savings workflows, push notifications, support communication, content modules, and admin operations from one scalable backend system.
The product needed a dependable backend that could support multiple user roles, paid subscription plans, coupon and savings features, notifications, support flows, content management, and admin visibility without becoming difficult to maintain as the platform scaled.
I developed a modular FastAPI backend using PostgreSQL for persistent data, Redis for OTP, cache, session, and throttling workflows, Stripe for subscription billing, Firebase for push notifications, and Docker-based deployment with Nginx and GitHub Actions CI/CD. The system was structured into service-focused modules for auth, users, subscriptions, payments, coupons, savings, messaging, notifications, support, blogs, site settings, logs, and admin operations.
A single system architecture snapshot preserved as proof of the delivery design and implementation flow.
The stack used across the full build, covering service logic, data storage, infrastructure, cloud setup, frontend integration points, and delivery tooling.
The core capabilities were implemented as production-facing modules, shaped for real usage, maintainability, and future scale.
Feature 01
JWT-based login, refresh token flow, protected routes, password hashing, and secure session handling.
Feature 02
Permission-aware APIs for different user, admin, support, and staff-level operations.
Feature 03
Redis-backed OTP workflows with expiration, retry control, cooldowns, and abuse prevention.
Feature 04
Stripe-powered subscription plans, payment handling, billing visibility, and subscription lifecycle tracking.
Feature 05
Backend logic for coupons, savings features, redemption flows, and user-facing benefit management.
Feature 06
Firebase-based device notifications, device token management, offline notifications, and notification history.
Feature 07
Structured support conversations, support messages, chat sessions, and communication tracking.
Feature 08
Admin-managed blog posts, platform settings, privacy policy, terms, and public site content APIs.
Feature 09
Centralized backend endpoints for managing users, subscriptions, coupons, support, content, logs, and settings.
Feature 10
Activity tracking through audit logs and sync logs for better operational visibility and debugging.
Feature 11
Optimized list endpoints for admin tables, large datasets, filtering, searching, and paginated responses.
Feature 12
Automated Docker image build, push, server deployment, migration execution, and health-check validation.
The main engineering tradeoffs handled during delivery instead of being deferred into post-launch cleanup.
Production Tradeoff
Production Tradeoff
Production Tradeoff
Production Tradeoff
Production Tradeoff
Production Tradeoff
Optimized the backend for faster response times, steadier throughput, and more predictable behavior under production traffic.
Applied practical safeguards across authentication, validation, permissions, and transport security to protect the platform in production.
Releases stay repeatable through a clear path from source control to health-checked production deployment.
Representative product surfaces supported by the APIs, workflows, and operational foundations built for the project.
A single delivery review screenshot preserved as proof of the finished work and client satisfaction.
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