Loïc Boutet

I build your web app in 2 weeks for 5000€.

If you're here. Read this. ⤵︎

For 17 years, I've explored every aspect of web development.

◉ I started with Ruby in 2006, when Rails was just emerging.
↓ I founded and led a 50-person agency.
↓ I delivered +80 projects for major companies.
(Doctolib, SNCF, Thales, Accor...)
↓ I managed €400K+ projects in healthcare and industry.
↓ I've watched 100-page specs balloon into 200 pages.
↓ I've experienced every pitfall in large tech projects.

◉ In the last two years, I revolutionized my coding approach.
↓ I developed AI tools that cut development time by 75%.
↓ I created systems that generate maintainable code.
↓ I guided companies through their AI transition.
↓ I built applications that generate €80K in annual savings.

With this experience, I've achieved game-changing results.

◉ I've transformed ideas into products in 14 days.
↓ I've developed an approach that avoids 90% of common pitfalls.
↓ I've created a system that makes development predictable.
↓ I've helped dozens of entrepreneurs validate their market.

That's why I created 5000.dev

A simple promise: your application in 2 weeks for €5000.

Here's what my latest client achieved:

Charles-Eliott Debourdeau
CEO of GlobalExam
- €80K annual savings
- 6x faster course creation while maintaining quality

◉ What you get with 5000.dev:
✔︎ A real application, not promises
✔︎ A dedicated senior expert who understands your business
✔︎ Professional development in 2 weeks
✔︎ Guaranteed fixed price of €5000
✔︎ Complete source code
✔︎ Detailed documentation
✔︎ Production deployment

This service has one goal. ⤵︎
Transform your idea into a product in 14 days.

That's it.
Now you know everything.

Growth B2B & B2C and entrepreneurship / building something new

Hey viewer 👋

What’s holding your business back—struggling to attract leads, retain loyal clients, or optimize your processes?

Hi, I’m Sergio Castellanos, and I help entrepreneurs and businesses turn these obstacles into stepping stones for growth.

✔️ Lead Generation: Develop strategies that bring the right customers directly to you.
✔️ Client Retention: Build loyalty and engagement with CRM solutions tailored on HubSpot and Klaviyo.
✔️ Process Optimization: Streamline operations to scale efficiently without losing focus on what matters.

With a deep passion for technology, I’m always learning and creating innovative solutions to drive real results. My goal? To help your business grow smarter, faster, and stronger.

📩 Let’s chat! Check out my profile and let’s explore how we can solve your challenges together.

Sergio Castellanos ✌️

Je recherche officiellement mon/ma futur(e) collègue préféré(e) ! 🚨


Vous êtes-vous déjà demandé ce qu'il advenait des chambres d'hôtel vides pendant la journée ?

Chez Dayuse, on a décidé de bousculer les codes de l'hôtellerie en transformant ces établissements en lieux de vie diurnes. 🏨✨

Aujourd'hui, nous sommes leaders mondiaux du secteur, présents dans 30 pays, et nous passons à la vitesse supérieure.

Le poste (en bref) : Nous recherchons un(e) Business Analyst pour rejoindre notre équipe RevOps à Paris.

Votre profil :

- 3 à 4 ans d'expérience.
- Vous parlez couramment le SQL et le Tableau.
- Vous adorez transformer des données complexes en décisions stratégiques simples.

Les avantages : Un environnement de travail ultra dynamique, jusqu'à 2 jours de télétravail par semaine, de super avantages sociaux et surtout... le privilège immense de travailler avec une équipe agréable !

👇 Envie de nous rejoindre ? J'ai glissé le lien de l'offre directement dans le premier commentaire.

taplio

The Battle

Loïc Boutet

Sergio Castellanos ✌️

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taplio

The Battle

Loïc Boutet

Sergio Castellanos ✌️

Followers

Posts

Engagements

Likes

Performance Score.css-goub6s{font-size:var(--chakra-fontSizes-md);font-weight:500;color:var(--chakra-colors-gray-600);display:block;margin-top:var(--chakra-space-1);}Sergio Castellanos ✌️'s LinkedIn Performance

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Performance ScoreSergio Castellanos ✌️'s LinkedIn Performance