Killian Colla
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Freelance SaaS Development — Turn Your Idea Into a Product

Have an idea for a SaaS product, automation tool, or web platform? I'm a freelance developer specialized in building SaaS solutions from concept to production.

What I build

I specialize in building complete SaaS products: B2B/B2C platforms, client portals, automation tools, dashboards, and AI-powered applications.

Tech stack

  • Frontend: Next.js, React, TypeScript, Tailwind CSS
  • Backend: Node.js, REST APIs, tRPC
  • Database: PostgreSQL (Neon, Supabase), MongoDB
  • Auth: Clerk, NextAuth
  • Payments: Stripe (subscriptions, one-time, billing)
  • AI: OpenAI API, Anthropic Claude API
  • Infra: Vercel, Railway, Docker

My approach

I work MVP-first: define the minimal scope, build it fast, ship it, then iterate based on user feedback. This reduces risk and accelerates time-to-market.

Previous SaaS projects

YouBotBuster — YouTube bot detection SaaS with Stripe subscriptions and analytics dashboard.

MeetSponsors — AI-powered platform matching sponsors and events.

Qovery AI Copilot — AI assistant for DevOps teams built with TypeScript and React.

Interested in building your SaaS? Let's discuss your idea.

Your project

A web project in Nice?

Freelance web developer based in Nice, France. Let's discuss your project — free quote within 24h.

Let's discuss your project