Frontend
Responsive product interfaces focused on usability, performance and maintainability.
TypeScript
React
Next.js
Angular
Yessine Eleuchi
I build software systems that work.
Full-stack engineer focused on product engineering, backend systems and applied AI — from interface and architecture to data, automation and production.
Available
Product · Systems · Intelligence
Selected work ↓02 / Capabilities
How I build.
I work across interfaces, backend systems, applied AI and software delivery to build complete, maintainable products.
Backend & Data
APIs, business logic, asynchronous workflows and reliable data systems.
NestJS
Node.js
FastAPI
Spring Boot
Laravel
PostgreSQL
MongoDB
Redis
Applied AI
AI capabilities integrated into practical product and business workflows.
Python
Ollama
Qdrant
OpenCV
Delivery
Reproducible environments, automation and reliable software delivery.
Docker
Git
GitHub Actions
Jenkins
03 / Selected Work
Featured Projects
Full-Stack & Applied AI PixiEstim An intelligent software project estimation platform that transforms heterogeneous project documents into structured, AI-assisted software estimations through controlled LLM workflows, historical RAG context, deterministic business rules, and human validation. 
Full-Stack Business Automation TejFlow A business automation platform designed for accountants to retrieve, classify, archive, and manage Tunisian TEJ certificates while simplifying reporting and repetitive administrative workflows. 
Backend Engineering & Observability System Monitoring Application A monitoring platform built with FastAPI to track endpoint availability, application performance metrics, and threshold violations through a centralized backend service. 
Computer Vision & Applied AI Automatic License Plate Recognition An AI-powered backend combining automatic license plate recognition, vehicle and violation management, and a RAG-based legal assistant for Tunisian traffic-law queries. 04 / Engineering
Scroll-driven system
01 / Idea
Start with the problem.
Before frameworks and architecture, there is a problem to understand, simplify and turn into a product direction.
02 / Product
Give the idea an interface.
Product engineering connects user experience, interaction and business logic into something people can actually use.
03 / Systems
Build what lives behind the screen.
APIs, databases, queues, workers and asynchronous workflows become the infrastructure behind the product.
04 / Intelligence
Add intelligence where it matters.
LLMs, RAG, document processing and computer vision only belong in the system when they create real product value.
05 / Ship
Turn complexity into a system.
Designed, connected, tested and delivered as software that can run, evolve and be maintained.
Idea
01 / 05
System
Notes
My Writings
Along with coding, I also like to write about life and technology. Here are some of my posts.
Choosing the Right PDF Extraction Tool (And Why Latency Changed Everything)
A practical comparison of the PDF extraction libraries I tested while building my estimation system, and how latency became the deciding factor.
Posted on April 20, 2026
How I Use Zustand in TejFlow to Keep the UI Simple and Clean ?
A small post about how Zustand helps me manage shared state inside TejFlow without overcomplicating the React codebase.
Posted on July 20, 2025
How HCI Improved TejFlow’s UI?
A short personal note about how basic HCI and ergonomics principles ended up shaping the UI of TejFlow more than I expected.
Posted on July 10, 2025
06 / Contact