Trezzo — Full-Stack SaaS Platform

Trezzo is a production-oriented full-stack SaaS platform built as a real product over a long development cycle.

Live: https://trezzo.cz

Product scope

Trezzo combines multiple product layers into one ecosystem:

• Social network and creator feed
• Digital product creation and sales
• Marketplace listings
• Auctions / bazaar
• Work platform with dedicated profiles
• CV Builder and work tools
• Messenger, rooms and realtime communication
• Calls / communication layer
• Affiliate system
• Courses
• Funnel builder
• Manual payments and internal wallet logic
• Cyber protection and account security

Full-Stack engineering scope

Frontend

• Vue 3
• Vite
• JavaScript
• TypeScript
• Angular module work
• Responsive UI
• Component-based architecture
• Route-based product modules
• SEO-focused public pages
• Production UI debugging

Backend

• Node.js
• Express-style REST API
• MongoDB / Mongoose
• PostgreSQL / Prisma
• Socket.IO realtime communication
• Auth and protected routes
• 2FA-ready security layer
• Password hashing
• Manual payments
• Wallet/profile balance logic
• Modular controllers, services and routes

Product modules

• Social feed
• Creator profiles
• 4 account/profile types
• Work profiles and separate Work layer
• Marketplace
• Auctions
• Digital products
• Courses
• Affiliate
• Messenger
• Rooms and calls
• Funnel builder
• Cyber protection
• Payments and wallet flows

Security and architecture

Trezzo includes security-focused implementation areas:

• JWT authentication
• Cookie/session handling
• Password hashing
• Two-factor authentication logic
• Protected API routes
• User/account separation
• Role/profile based logic
• Private production secrets excluded from this repository

Screenshots

Social feed

Creator / profile preview

Public share preview

Why this project matters

Trezzo demonstrates the ability to design, build, debug and iterate on a large full-stack SaaS system with many interconnected domains.

This repository is a curated portfolio showcase.
Production secrets, environment files, database dumps and internal backups are intentionally excluded.

Key engineering challenges solved

• Multi-domain architecture separation
• Authentication and protected route flows
• Realtime messaging workflows
• Wallet and manual payment logic
• User/profile role separation
• Public SEO page architecture
• Frontend/backend integration
• Production debugging and diagnostics
• Scalable module organization

Candidate profile

Full-Stack Developer focused on building real products rather than isolated demo projects.

Areas of work:

• SaaS development
• Product engineering
• Frontend + backend architecture
• Realtime systems
• Authentication/security
• UX and user flows
• Platform design