Haikel Fazzani
Full-Stack Software Engineer & AI Engineering Specialist
Passionate software engineer and technical author with expertise across the modern JavaScript ecosystem, scalable distributed backends, web security, and applied AI systems (LLMs, RAG, agentic workflows). Based in Tunis, Tunisia and collaborating with teams worldwide.
Background & Philosophy
I specialize in full-stack architecture, focusing on building dependable web applications, high-throughput APIs, and AI integrations that solve real customer problems without unnecessary operational overhead.
On the server, I build with Node.js, Deno, Bun, and TypeScript, designing microservices, REST APIs, and background job processing pipelines with PostgreSQL and Redis. On the client, I engineer performant, accessible user interfaces with React, Next.js, and Astro.
As an AI Engineer, I implement applied artificial intelligence solutions including retrieval-augmented generation (RAG), LLM orchestrations, semantic vector searches, and autonomous tool-calling agents.
I write practical engineering articles and tutorials on Haikel.dev to document real-world debugging discoveries, architectural patterns, and security best practices.
Haikel Fazzani
Full-Stack & AI Engineer
- Experience
- 7+ Years
- Location
- Tunis, Tunisia
- Work Mode
- Remote Worldwide
- Availability
- Available for hire
- Primary Stack
- TypeScript, React, Node, AI/LLMs
Core Capabilities
Technical Arsenal
Frontend & UI
React, Next.js, Astro, TypeScript, Tailwind CSS, Web Components, Accessibility (a11y), responsive design.
Backend & APIs
Node.js, Deno, Bun, Fastify, Express, PostgreSQL, Redis, REST APIs, GraphQL, distributed systems.
AI Engineering
LLMs, LangChain, RAG pipelines, Vector Databases (Pinecone/pgvector), fine-tuning, autonomous agents.
DevOps & Security
Linux administration, Docker, CI/CD, Nginx, Cloudflare, Web Application Security, performance profiling.
"Without requirements or design, programming is the art of adding bugs to an empty text file."
Let's Build Something Exceptional Together
Currently open for senior software engineering, AI architecture consulting, and technical contract projects worldwide. Reach out directly to discuss your project.