Freelance Full-Stack Developer & AI Engineer

Building Intelligent Digital Experiences

I help companies ship AI-powered products, scalable APIs, and high-quality web applications — from rapid prototypes to production-ready solutions.

Selected Work

A curated selection of recent projects showcasing AI integrations, full-stack development, and scalable solutions.

Space Is The Place
Vue.js TypeScript Tailwind CSS Axios Express OAuth

Space Is The Place

An elegant way to explore your Discogs vinyl collection, featuring advanced filters and integrated Apple Music previews.

View project

Preview coming soon

Python FastAPI SQLite OpenAI API

Unmet.io

Scan the web for unmet needs and emerging trends. To be published.

View project

Preview coming soon

Side Project #3

To be published.

What I Do

Comprehensive development services focused on modern technologies and AI-driven solutions.

AI Development

Building intelligent agents, RAG pipelines, and LLM integrations with OpenAI, Anthropic, LangChain, and vector databases for production-ready AI applications.

Full-Stack Development

End-to-end web applications with React, Next.js, Node.js, TypeScript, and modern frameworks. Scalable architectures, clean code, and robust testing.

API & Backend

RESTful and GraphQL APIs with NestJS, FastAPI, Express. Database design, optimization, microservices architecture, and cloud deployment (AWS, Hostinger, Netlify).

Core Stack

TypeScript Python React Next.js Vue.js Node.js NestJS Express FastAPI LangChain OpenAI PostgreSQL Docker AWS
Joris Neblai

About Me

I'm a Freelance Full-Stack Developer & AI Engineer helping companies build fast, reliable, and intelligent digital products. I specialize in turning ideas into production-ready solutions using JavaScript/TypeScript, Python, and modern AI-driven development workflows.

My work spans AI agents, RAG pipelines, automated workflows, and full-stack web applications. I integrate tools like OpenAI, Anthropic, LangChain, Ollama, vector databases, and modern cloud deployments to accelerate development without compromising quality.

I also build performant websites and e-commerce experiences using WordPress (custom themes & plugins) and Shopify with advanced Liquid customization.

Outside of engineering, I'm passionate about music and vinyl collection, always digging for new sounds. I stay active through running and strength training, and I'm constantly experimenting with emerging AI technologies.

Work Experience

  • Built custom websites using Next.js, React, Wordpress, Shopify, and Webflow.
  • Developed internal micro-tools to automate operational workflows.
  • Created API and webhook integrations connecting services and platforms.
  • Designed AI-powered automations for analysis, generation, and decision workflows.
  • Optimized processes to reduce manual workload and improve reliability.

Recent Work

  • Built an AI-driven system scanning public platforms (X, Reddit, Product Hunt…) to detect emerging user needs and early market signals.
  • Implemented an automated e-commerce workflow connecting Shopify ↔ PayGreen via API/webhooks.
  • Designed and shipped a modern SEO-optimized website for a local business.
  • Created AI scripts to accelerate content creation and data processing.

Builder Mindset

I build clean, robust, well-crafted solutions at the intersection of web development, automation, and AI.

  • Developed and optimized NestJS REST APIs for performance and scalability.
  • Built a PDF generation service (Puppeteer, pdf-lib, Handlebars) processing 1,000+ documents per month.
  • Jest unit and Playwright end-to-end tests reaching ~90% coverage; improved CI quality gates.
  • Implemented Datadog for error tracking, reducing average resolution time.
  • Shipped new React features and reusable components; authored custom hooks to improve maintainability.
  • Enhanced UI with TailwindCSS; improved mobile experience and reduced bundle size via lazy loading.
  • Set up Storybook documentation to streamline onboarding; active in code reviews.
  • Diagnosed and repaired complex hardware/software issues at scale; trained new technicians.
  • Delivered 500+ advanced diagnostics and repairs per year; maintained high service quality.

Education

  • 700+ hours bootcamp covering HTML, CSS, JavaScript, React, accessibility, SEO, Agile, TDD.
  • Built a full-stack final project from design to deployment.

Let's Create Together

Need help building an AI-powered product, automating a workflow, or developing a scalable web application? I'm available for freelance projects.