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Nicolas BeauvalletNB

Nicolas Beauvallet

Fullstack & AI Web Developer | Websites, Apps, MVPs

€550/day
Paris, FR
0-2 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Nicolas

You have a web project and you want to see it finished, not dragging on.


I design and deliver websites, MVPs, and web applications for founders, agencies, and studios who want a product online quickly, without coordinating 3 different providers.

My Background
After 7 years managing an audiovisual production company (150+ projects delivered for Parisian brands and agencies), I trained in coding and AI tools to deliver complete digital projects, quickly and effectively.

I am not an engineer who executes specs; I am a product partner who thinks about the experience before the technology.

What I Deliver
  • Landing Pages designed, written, and deployed in 5 to 7 days, with solid analytics, performance, and SEO
  • Complete Websites for startups, brands, studios (Next.js, Supabase, Vercel)
  • MVPs and Web Applications from idea to production to test a market quickly
  • Custom Internal Tools to automate without relying on external SaaS

How I Work
First free consultation to frame the need, then a fixed-price quote with committed scope and deadline. Short missions (1 to 4 weeks) or longer engagements. Available for in-person meetings in Paris, but fully remote work is possible.
  • A Single Point of Contact from brief to launch
  • Short Cycles: MVP or first design validation page in a few days, complete app or website in 2 to 3 weeks.
  • Integrated Creativity at every stage: product visual generation, copywriting, UX Design, I think creatively and code simultaneously
  • Fixed Price per Deliverable: fixed price, fixed scope, fixed deadline. Finished product, controlled costs.
  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • BUDG.ai
    Fullstack Developer and Product Designer, B2B SaaS
    SOFTWARE PUBLISHING
    January 2026 - Today (7 months)
    Paris, France
    Design, development, and launch of a B2B SaaS for French audiovisual producers. End-to-end mission, from product design to launch and acquisition.

    Stack: Next.js, TypeScript, Supabase, Tailwind, Vercel, Stripe, Mistral AI API.

    Scope covered:
    Product design and UX (user flows, wireframes, UI)
    Full stack development (frontend, backend, database, auth, payments)
    AI integration to facilitate budget creation
    Marketing: Branding, copy, landing page & acquisition (SEO, outbound, content)
    Next.js Supabase Stripe TypeScript SaaS
  • StayKlin
    Fullstack Developer and Product Designer, B2B SaaS
    SOFTWARE PUBLISHING
    February 2026 - February 2026
    Paris, France
    Two-week run, from ideation to production, to deliver the MVP of a B2B SaaS for short-term rental managers (Airbnb, Booking): cleaning task scheduling, mobile execution by field agents, financial monitoring, and invoicing. Complete mission, from product design to deployment.

    Stack: Next.js 16, React 19, TypeScript, Supabase (Postgres, Auth, Edge Functions, multi-tenant RLS), Tailwind v4, shadcn/ui, Vercel, Stripe, Resend, Twilio.

    Scope covered:

    • Product design and UX (owner + mobile agent flows, wireframes, UI)
    • Full stack development (frontend, backend, database, auth, payments)
    • Secure multi-tenant architecture using Postgres Row Level Security
    • Transactional integrations (Twilio SMS, Resend emails, Stripe subscriptions)
    • Airbnb / Booking iCal synchronization for automatic task creation
    • Mobile-first web app for field agents (checklists, photos, incidents)
    • Marketing: branding, copy, landing page
    Next.js Supabase Stripe Twilio MVP
  • TBWA\PARIS
    Development of an Internal Production Management Tool
    DIGITAL AND IT
    March 2026 - March 2026
    Paris, France
    Design and development of a custom multi-project planning tool for the audiovisual production teams of a major agency, for a high-volume filming advertiser account.

    Approach:leverage existing tools within the organization rather than deploying external SaaS. Complete automation of a planning system built on Google Sheets with Apps Script, manageable by non-technical users.

    Context:production teams were juggling multiple projects simultaneously (campaigns, shorts, short-form content) without a consolidated view of schedules, milestones, and dependencies.
    VBA Automation Google Apps Script Google Sheets JavaScript

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