Let's build your Web, SaaS, Data & AI solutions together

The agility of a freelancer, the expertise of an agency, and the vision of a startup studio

Tech Entrepreneur & Fullstack Developer (Python/Django, React).
I imagine, design, and develop digital platforms, SaaS solutions, and AI applications tailored to your business challenges.

Let's discuss your project

About

I am Nicolas PELLIER, a tech entrepreneur and full-stack developer with over 15 years of experience in web development and digital product design. I founded Vivanoda, a multimodal travel search platform (plane, train, bus, ferry), which was recognized by the European Commission for its innovative nature.

My career path has given me dual expertise:

Technical

Backend development (Python, Django, DRF, etc.) and frontend development (ReactJS), complex data integration, implementation of data, SaaS, and AI architectures.

Product & Business

Strategic framing, user experience design, launch and growth of an international platform.

Today, I apply this expertise to web, data, SaaS, and artificial intelligence projects..

Expertise

Backend & API

Python, Django, RestFramework, PostgreSQL, MySQL, FastAPI,...

Frontend

ReactJs, Typescript, Javascript, CSS/SCSS, Bootstrap,...

Data & AI

Pandas, Numpy, Matplotlib, PostGis, OpenAI API & LLM, NLP, BDD vectorielles, RAG, Prompt Engineering...

Product & Strategy

Product management, UX design, Growth

Portfolio

Vivanoda

Multimodal journey search platform (airplane, train, bus, ferry) developed from scratch.

  • • Design of a unique search engine integrating APIs, GTFS files, and scraping
  • • Available in 17 languages and awarded by the European Commission

Travel AI Assistant

Chatbot based on the OpenAI API, connected to Vivanoda services.

  • • Route planning with AI
  • • Connection to real-time price APIs
  • • Demonstration of the potential of intelligent agents applied to the travel sector

Data Project

Study and analysis of the price index for ferry crossings in Europe / Press relations campaign in Europe

  • • Over 150,000 fares collected and analyzed (Pandas)
  • • Localization → 27 adapted versions (languages, currencies, local units)
  • • DataViz → 2,600 localized graphs (Matplotlib)
  • • Automated distribution to journalists → Over 200 mentions in the European press.

Offers

I support companies, startups, and project leaders in various ways:

Tailor-made development

Web platforms, SaaS, Data, AI

MVP & Rapid Prototyping

Turning an idea into a functional product

Tech & Product Consulting

Strategic framing, technical architecture, product support

Startup Studio / Hybrid Partnerships

Several collaboration formats possible: services, equity, or hybrid

Contact

Interested in working together?

nicolas@nativexpand.com

Based in France & open to international opportunities

Let's discuss your project today