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Victor LenainVL

Victor Lenain

Full-stack Developer · AI Integration

€495/day
Paris, FR
3-7 years
LLM
Generative AI
AI Agent
Web Integration
RAG

Average response time: 1 hour

Freelancer profile translated to English.
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About Victor

Hello, I'm Victor, a freelance developer based in Paris, specializing in integrating AI into web products.

I spent two years at an agency working on fintech projects (Ruby on Rails, React) before going freelance in 2024. Since then, I've been working with startups, SMEs, and agencies on two types of projects:

- Custom web applications (front-end, back-end, API, deployment, post-delivery monitoring)
- AI integration into these applications: agents, RAG, LLM automations, chatbots when useful

In my personal time, I'm working on three projects to deepen my mastery of applied AI:

- My freelance agent, which runs 24/7 on my Ubuntu server and automates my prospecting (Gmail sorting, draft generation, weekly report). Stack: Claude Code + Claude Agent SDK + Python.
- TomIA (tomia.fr), an AI school tutor based on the Socratic method, aligned with Éduscol curricula. In development, public landing page.
- AubeSonore (aubesonore.fr), an independent web radio with automated music programming. Live streaming 24/7, deployed and functional.

Regarding client projects, I notably delivered Jerikho IM (jerikho-im.com), a front-end redesign for a Private Equity management company, respecting AMF constraints, and about ten other projects for startups and SMEs since April 2024.

Daily stack: LLMs (Anthropic Claude, OpenAI), RAG with pgvector, agents (Claude Agent SDK, LangChain), Next.js and TypeScript for the front-end, Node.js and PostgreSQL for the back-end, deployed on Vercel or Docker.

My approach: I write clean code, I test, I document, and I don't disappear after the invoice. I don't recommend AI when a 50-line script does the job.

Available for projects, remotely from Paris. Daily rate €500 (negotiable depending on the context). I respond within 4 hours during business hours.

If you have a project in mind, please write to me.
Digital Business Models
E-commerce
Software Publishing
Digital and IT Services
Banking and Financial Services

  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • Freelance
    Full-Stack Developer · AI Integration
    January 2024 - Today (2 years and 7 months)
    Freelance developer specializing in React, Next.js, Node.js, and TypeScript. Since January 2024, I have been assisting startups, SMEs, and agencies on various web projects: business applications, showcase websites, AI integrations, and automations.

    Notable projects:
    - Jerikho IM (jerikho-im.com): Front-end integration and optimization of a Private Equity management company's WordPress site. Adaptation of the design to the standards of the regulated financial sector (AMF).
    - TomIA (tomia.fr): Design and development of an AI-powered school tutor, with a React Native mobile app.
    - AubeSonore (aubesonore.fr): Fully automated web radio, operating 24/7 without human intervention.

    Stack: React, Next.js, Node.js, TypeScript, PostgreSQL, Docker, Vercel, WordPress. Integration of generative AI (OpenAI, Claude, LangChain) where relevant.
  • CapSens
    Web Developer
    DIGITAL AND IT
    January 2022 - March 2024 (2 years and 3 months)
    Paris, France
    At Capsens, I held the role of full-stack web developer, with a strong focus on Ruby on Rails.

    Back-end design and development: I designed modular RESTful APIs and secured business logic using the Rails suite (Active Record, Hotwire / Turbo, Sidekiq).

    Front-end integration: I transformed Figma mockups into responsive interfaces (HTML5, SCSS, StimulusJS), ensuring performance, accessibility, and cross-browser compatibility.

    Product collaboration: within multidisciplinary teams, I worked using agile methodologies with project managers to clarify user stories, estimate tasks (Planning Poker), and ensure iterative delivery.

    Design & UX: daily discussions with designers to refine micro-interactions, define design tokens, and maintain a coherent UI charter via Storybook.

    Quality culture: implementation of Rspec / Capybara tests, collaborative code reviews, CI/CD (GitLab CI), and monitoring (Sentry, New Relic) to ensure reliability and continuous deployments.
    REST APIs Ruby on Rails Developer HTML5 CSS3 CI/CD Management
  • Le Wagon
    Full-Stack Developer (Bootcamp)
    LEGAL
    July 2021 - September 2021 (2 months)
    Intensive full-stack web development bootcamp. Comprehensive training covering Ruby, Ruby on Rails, JavaScript, HTML/CSS, SQL, and PostgreSQL. Development of web applications from scratch, agile methodologies, and code best practices. Final project: design and deployment of a functional web application as a team.
    PostgreSQL JavaScript CSS3 Ruby on Rails Web Integration

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Education

  • Full-stack web developer
    Wagon
    2021
  • Software design developer
    Openclassrooms
    2023

Certifications

  • Full-Stack Web Developer
    Le Wagon
    2021
  • Software Design Developer
    OpenClassrooms
    2023

Skill set

Docker
PostgreSQL
REST APIs
TypeScript Development
Automation

Categories