You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
David CastellàDC

David Castellà

Full-stack Developer with AI · Vibe Coder

€400/day
Barcelona, ES
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
Back to original language

About David

I'm David, founder of Freedolia and vibe code builder. I build custom software with AI: web applications, internal dashboards, conversational agents, and integrations.

I work differently: with Claude as a copilot, I deliver in 6-8 weeks what a traditional team takes 6-8 months. Production code from day one, 100% yours on your GitHub, no vendor lock-in.

To demonstrate what I can do, I've built 3 of my own SaaS products that you can try before hiring me: Flux (industrial ERP for SMEs), Freedoliapp (supply chain for Amazon FBA), and Freehubia (all-in-one dashboard for agencies and SMEs).

What I build:
- Custom web applications and internal dashboards
- Conversational AI agents and process automation
- Integrations (Holded, Stripe, WhatsApp, Slack)
- Migrations from legacy/Excel to modern stacks
- MVPs to validate ideas before investing months

Stack: Next.js 15, TypeScript, Supabase, Anthropic Claude, Stripe, Vercel, and EU hosting.

As a bonus, I bring over 15 years of product design and UX, so I deliver software that's also easy to use.

Do you have an idea or a process that's wasting your time? Let's talk. We'll start with a clear scope, fixed price, and a closed date.
  • Catalan

    Native or bilingual

  • Spanish

    Native or bilingual

  • English

    Conversational

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

Experience

  • Freedolia
    Founder & Software Engineer
    SOFTWARE PUBLISHING
    August 2024 - Today (1 year and 10 months)
    Custom software studio with AI for companies that want to move fast. Full-stack development with Claude as a copilot: from brief to production in 6-8 weeks.

    I've built 3 of my own SaaS products as a functional portfolio: Flux (industrial ERP for SMEs), Freedoliapp (supply chain for Amazon FBA), and Freehubia (all-in-one dashboard for agencies and SMEs).

    I also develop conversational agents, automations, and integrations with client systems.

    Method: closed price and date, weekly demos, and 100% client code on their GitHub, no vendor lock-in.

    Stack: Next.js 15, TypeScript, Supabase, Anthropic Claude, Stripe, and Vercel.
    Next.js Typescript React Supabase artificial intelligence
  • Upazon
    Amazon Account Manager & Consultant
    January 2020 - Today (6 years and 5 months)
    Comprehensive management of brand accounts on Amazon: listing optimization (SEO), PPC/DSP campaigns, and international expansion (EU & US). Business context that fuels the Freedoliapp product.
  • Lappsus Software
    Creative Director / UX
    January 2013 - January 2015 (2 years)
    UX design for mobile solutions: flows, wireframes, prototypes, and interface specifications. First contact with the end-to-end digital product cycle.

Recommendations

Be the first to recommend David

Help this freelancer shine by sharing your experience working together.

These freelancer profiles also match your criteria

AgathaA

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

BaptisteB

Baptiste Duhen

Fullstack developer

4.6

(4)

5

AmedA

Amed Hamou

Senior Lead Developer

4

(2)

7

AudreyA

Audrey Champion

Web developer

4.3

(3)

4

Education

  • Amazon Seller Specialist
    UCAM Infoarquitectura CIFO
    2019
    Amazon Seller Specialist
  • Master in
    ITES Graphic Arts and Sequential Art Escola Joso
    Máster en

Categories