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End-to-end SaaS demo from my project Trezzo.
In this video, I demonstrate a complete e-book publishing workflow:
• login
• social feed
• Canvas e-book editor
• external book download
• full book import
• product publishing
• product detail
• personal digital library
• PDF / EPUB / TXT / JSON / .trezzo exports
• real reading of the exported book
• source code preview of the CanvasEbookEditor
Built with:
• Vue 3
• Vite
• Node.js
• Express API
• MongoDB / Mongoose
• custom Canvas e-book editor
• digital product publishing flow
• personal library system
• PDF / EPUB / TXT / JSON export pipeline
• custom .trezzo export format
• production domain via Cloudflare tunnel
This is not a generated AI template, a pre-made website, or a static mockup.
It is a custom-built SaaS workflow developed through real frontend and backend code, with a working editor, publishing system, product detail, personal library and export pipeline.
I have spent a long time building, testing and connecting these parts into one functional product flow.
https://contra.com/p/AcMP3llW-trezzo-canvas-e-book-editor-end-to-end-saa-s-publishing-flow?referralExperimentNid=DEFAULT_REFERRAL_PROGRAM&referrerUsername=lukas_caletka_f4x45hqu
The network for creativity
Join 1.25M professional creatives like you
Connect with clients, get discovered, and run your business 100% commission-free
Creatives on Contra have earned over $150M and we are just getting started
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Playmaker Xpress – Full-Stack Fitness & Training Platform
I designed and developed Playmaker Xpress, a full-stack website for a personal training and athletic performance business.
I built the frontend using Next.js, React, and TypeScript, with FastAPI powering the backend and PostgreSQL for the database.
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Tech Stack: Next.js • React • TypeScript • FastAPI • PostgreSQL
This project demonstrates my ability to build both the frontend and backend of a real-world web application, connect APIs to a database, and deploy a production-ready application.
I’m available for full-stack, React, Next.js, Python, and FastAPI development project
good work
Built an AI-powered customer support automation workflow that can classify incoming emails, identify support requests, retrieve relevant information from a knowledge base, and assist with generating the right response.
The workflow combines AI agents, RAG, embeddings, Pinecone, Gmail, and automated notifications to reduce repetitive support work while keeping human review in the loop.
The flow includes:
📩 Incoming email detection
🤖 AI-based support request classification
📚 Knowledge base retrieval with Pinecone
🧠 Context-aware customer support agent
✍️ Automated response draft generation
🔔 Reviewer notification through Telegram
⚡ Separate handling for non-support emails
I’ve been exploring more ways to combine AI + automation + real-world business workflows, rather than using AI only as a chatbot.
More automation experiments coming soon. 🚀
#AIAutomation #ArtificialIntelligence #Automation #AIAgents #RAG #n8n #Pinecone #OpenAI #WorkflowAutomation #CustomerSupport #GenerativeAI #MachineLearning #BusinessAutomation #Developer #FullStackDeveloper
1,638 GitHub contributions in the last year.
Not a vanity metric — just a year of designing, coding, debugging, shipping, and learning.
I build SaaS products end to end: architecture, backend, frontend, AI integrations, and production.
Currently available for remote freelance projects.
Have something you want to build? Let’s talk.
#FullStack #SaaS #AI #FreelanceDeveloper #SoftwareEngineering
