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Paul WéryPW

Paul Wéry

Supermalter

Fullstack SaaS Expert | React / Node.Js

€600/day
63 projects
Paris, FR
8-15 years

Average response time: 4 hours

Freelancer profile translated to English.
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About Paul

đŸ‡«đŸ‡· Version française
# Freelance Fullstack Developer & CTO — SaaS & AI Specialist

15+ SaaS designed and deployed, dozens of projects shipped. I help startups and companies go from idea to production.

What I do
- Full SaaS platform development
- MVPs to validate a market idea fast
- Fractional CTO: strategic and technical support
- AI integration: conversational agents, LLMs, RAG
- Business process automation tools

How I work
1. Discovery call (30 min) to assess feasibility
2. Detailed quote within 24h
3. Step-by-step project plan with clear deadlines
4. Staging environment from day 2: daily progress tracking
5. Regular communication (Jira/Trello, Slack or WhatsApp)

Stack
JavaScript, TypeScript · Next.js, React.js, Node.js · PostgreSQL, MongoDB, MySQL · AWS, Firebase · Stripe · AI/LLM (OpenAI, LangChain, RAG)

Security and GDPR compliance built in from day one.

🇬🇧 English version

# DĂ©veloppeur Fullstack & CTO Freelance — SpĂ©cialiste SaaS & IA

15+ SaaS conçus et déployés, des dizaines de projets livrés. J'accompagne startups et entreprises de l'idée à la mise en production.

Ce que je fais
- Développement de plateformes SaaS complÚtes
- MVP pour valider rapidement une idée de marché
- Assistance CTO : support stratégique et technique
- Intégration IA : agents conversationnels, LLM, RAG
- Outils d'automatisation des processus métier
Ma méthode
1. Appel de découverte (30 min) pour évaluer la faisabilité
2. Devis détaillé sous 24h
3. Plan de projet étape par étape, délais précis
4. Plateforme de test dĂšs le 2e jour : suivi quotidien
5. Communication réguliÚre (Jira/Trello, Slack ou WhatsApp)

Stack
JavaScript, TypeScript · Next.js, React.js, Node.js · PostgreSQL, MongoDB, MySQL · AWS, Firebase · Stripe · IA/LLM (OpenAI, LangChain, RAG)

Sécurité et conformité RGPD prises en compte dÚs la conception.

Paul WERY — Fullstack Developer
  • French

    Native or bilingual

  • English

    Fluent

  • Korean

    Conversational

Remote only
Primarily works remotely

Experience

  • YOMA SAS
    Malt logoOn Malt
    CTO Assistant - AI Product Acceleration
    August 2025 - April 2026 (8 months)
    Assisted the CTO of GetMint to accelerate product development during a strong product iteration phase.

    Developed the frontend and backend.
    Contributed to architecture and optimization strategies.
    Managed LLMs (costs, errors, responses).
    FullStack Development LLMOps Amazon Web Services Software as a Service (SaaS) Startup
  • MALAREN SAS
    Vidcopy
    E-COMMERCE
    May 2024 - June 2024 (1 month)
    Created an AI-powered content generation SaaS.
    Led the development as Fullstack Lead Developer.
    Next.js Langchain MongoDB Firebase Artificial Intelligence
  • Anoe Technology
    Cleevi
    HUMAN RESOURCES
    November 2023 - February 2024 (3 months)
    Developed an AI-powered SaaS application for the human resources sector.
    Served as CTO and Fullstack Developer.
    Next.js Langchain MongoDB Firebase ChatGPT

Reviews

5.0

Out of 38 ratings

E

Emmanuel

Full Stack Dev - YOMA SAS

Reviewed on 4/10/2026

We had an excellent collaboration with Paul for over 6 months. He delivered highly technical projects and is an excellent communicator. I highly recommend him.
S

Sebastien

Ekomia

Reviewed on 7/16/2025

We hired Paul for the development of our MVP at Ekomia. The goal: create a comprehensive platform enabling our advisors (specializing in energy renovation of homes) to obtain all necessary information (open data APIs, consumption analysis, ROI financial models...) to effectively assist individuals with their projects and track them at each stage of the process. Excellent collaboration with Paul throughout the project. He is very professional, responsive, and above all, super flexible despite numerous changes in direction due to the project's still immature nature. He adapted to our budget and time objectives, delivering a result that far exceeded expectations. Great communication, and we truly feel his involvement. A reliable partner with whom we continue to work. I recommend him without hesitation... but don't solicit him too much, we'd like him to keep some time for us!

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Education

  • Master's degree level 1, graduated in 2020
    EPITECH - Expert in Information Technology
    2020
    Enseignement basé sur l'apprentissage par la pratique. Réalisation de nombreux projets aux technologies diverses telles que le C, C++, Java, C#, HTML5, CSS3, Javascript.

Certifications

  • Expert in Information Technology
    EPITECH
    2020
    C/C++ C++ Typescript JavaScript Next.js React.js React NextJs Fullstack Fullstack Development Web Development

Skill set

Categories