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Laurent JulienneLJ

Laurent Julienne

Full-Stack AI Developer · SaaS & Automation

€400/day
1 project
Bordeaux, FR
3-7 years
OpenAI
RAG
LLM
Automation
React.js

Average response time: 1 hour

Freelancer profile translated to English.
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About Laurent

Do your teams spend hours manually processing content, answering the same questions, or navigating tools that don't communicate with each other?

I integrate AI directly into your existing products and processes: no disposable POCs, just production code.

My typical interventions:
– Adding an AI assistant to a SaaS dashboard (support, data entry assistance, intelligent search).
– Automatic summarization of long content (job offers, product sheets, internal documents) directly within the interface.
– Automatic text generation (emails, marketing content, product descriptions) from business data.
– Custom internal tools: mini-analytics, reporting, back-office task automation.

Stack:
– Frontend: React.js, Next.js, React Native
– Backend: Node.js, Express, GraphQL
– AI: OpenAI (GPT, RAG), internal assistants, text processing & summarization
– DB/API: PostgreSQL, MongoDB, Supabase, Prisma
– CI/CD & Hosting: GitHub Actions, Vercel, AWS, DigitalOcean

Based in Bordeaux.

📩 I offer a free AI audit (30 min video call + Notion summary) to quickly identify what can be automated or boosted by AI in your existing application.
Software Publishing

  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Bordeaux (up to 50km)

Experience

  • Little Worker
    FullStack Developer NestJS/NextJS
    DIGITAL AND IT
    March 2026 - Today (5 months)
    Bordeaux, France
    Development of a complex end-to-end business application, with a
    Back → BFF → Front architecture.

    Missions:

    Design and development of complete features: business modeling,
    SQL database, NestJS API, BFF layer, and Next.js interfaces.
    Implementation of complex business rules with a domain-oriented
    architecture: separation of concerns, application services, repositories, DTOs, validation, and use case management.

    Development of front-end interfaces in Next.js with attention to
    UX, user flow clarity, and component consistency.

    Evolutionary and corrective maintenance: bug analysis, investigation via logs/
    monitoring, correction, and securing of regressions.

    Writing unit, integration, and E2E tests with Jest to ensure the reliability of critical features.

    Collaboration with the product/tech team to clarify requirements, break down features, and ensure the application's technical consistency.
    NodeJS React.js NestJs Docker Typescript
  • Freelance indépendant
    Fullstack Web Developer
    DIGITAL AND IT
    March 2025 - March 2026 (1 year)
    Bordeaux, France
    Design and development of web and mobile applications, technical architecture, deployment, evolutionary maintenance, and optimization.

    Missions

    • Design and development of an AI-enhanced podcast mobile application (React
    Native + Node.js backend), including an audio ingestion pipeline and asynchronous AI processing.

    • Deployment with CI/CD, Datadog monitoring, and AWS cost optimization.

    • Development of a real-time video conferencing web application integrated with AWS Chime.

    • Technical audit and SEO optimization of a website for a law firm.

    • Design and deployment of automated AI agents (SEO content generation, email automation, RAG chatbot).

    Tools: TypeScript, React, React Native, Node.js, NX, Jest, Playwright, GitHub Actions,
    Datadog, Docker, AWS (ECS, S3, ALB), REST API.
    Typescript React.js React Native Node.js AWS
  • Tellent (formerly Recruitee)
    React Developer
    HUMAN RESOURCES
    September 2022 - March 2025 (2 years and 6 months)
    Paris, France
    Context: Refactoring and evolution of the company's HR SaaS solution.

    Missions:

    - Automated PDF creation with AI-generated content.
    - Migration of the translation library (Locize → Phrase).
    - Application of clean code patterns, such as Atomic Design.
    - Unit/integration/E2E tests using Jest and Playwright.
    - Datadog monitoring and bug fixing.
    SAAS AI Chatbot API React.js Generative AI
Check out Laurent's experience

Reviews

5.0

Out of 1 rating

C

Cécile

Cécile Martin Avocate EI

Reviewed on 5/8/2025

Laurent created my law firm's website. He took the time to understand my expectations. The communication was very smooth and responsive. And above all, I am very happy with the result, I have a beautiful website, to my taste, and I have already received positive feedback from people who consult it. I will definitely use Laurent's services again if I need other IT services. Thank you :)

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Education

  • Master 2 (M2), Web Development
    Bordeaux YNOV Campus
    2019
    Master 2 (M2), Développement web
  • Master 1, Web Development
    Ingésup
    2018
    Master's degree, Programmation informatique
Check out Laurent's education

Skill set

NodeJS
Supabase
React Native
Langchain
Prompt engineering
Generative AI
Artificial Intelligence (AI)
AI Chatbot
API
SAAS
Typescript
Claude
SaaS Developer
n8n
Notion
AI Agent
AI Agents

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