SaaS

Overview I build custom platforms and SaaS products - end-to-end systems with user management, real-time data processing, and automated reporting. From multi-tenant restaurant menu systems (QR Menu SaaS) to automated investment analysis platforms (Musli) with cron-based data collection and daily reporting, I take your idea from concept to deployed product. What I Can Do For You Full-Stack SaaS Products Multi-tenant architecture: Database-per-tenant or shared schemas with row-level isolation Authentication and authorization: JWT, OAuth 2.0, role-based access control (RBAC), session management Subscription management: Stripe/Paddle integration, plan tiers, usage tracking, invoicing Admin dashboards: Tenant management, usage analytics, billing overview, user administration Custom Platforms Data platforms: Automated data collection, processing, analysis, and reporting pipelines API-first design: RESTful or GraphQL APIs designed for consumption by multiple clients (web, mobile, third-party) Static publishing: Generate and deploy static site versions of dynamic data - ideal for customer-facing content from admin interfaces Automated Systems Scheduled data pipelines: Cron-based or event-driven data collection, processing, and report generation Investment/financial tools: Automated portfolio analysis, risk metrics (Sharpe, Sortino, MaxDD), technical indicators (RSI, MACD, Bollinger) Notification systems: Email, Telegram, or messaging platform delivery for reports and alerts How I Build Architecture and stack selection: Monolith first, microservices when necessary Rapid prototyping: Get a working product in your hands fast Production hardening: CI/CD, monitoring, backups, disaster recovery Iterate: Continuous delivery of features based on real usage Technologies Backend: Go (sqlx), TypeScript (NestJS, Express), Python Frontend: React Native (Expo - iOS, Android, Web), React/Next.js Databases: PostgreSQL, MSSQL, SQLite, DynamoDB Infrastructure: AWS, Docker, CI/CD Automation: Cron-based pipelines, schedulers, event-driven triggers Payments: Stripe, Paddle