Open to remote roles · available immediately

AI-powered software, from idea to production.

I'm David Farina, a full stack developer with 20+ years in tech. I build web platforms with Next.js, TypeScript and Supabase, using AI both in my workflow and inside the product.

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  • Full-time, part-time or contract
  • Any time zone, flexible hours
  • Open to relocation for the right role
  • Strong written English · async-first communication
David Farina at his desk, with monitors showing code in the background
years in tech
20+
years of hands-on coding
15
years building with no-code and AI
5+
people led as engineering director
11

What I do

What I bring to a team

  • Custom web platforms

    SaaS products, admin dashboards and full web apps, from prototype to production, with automated tests and deploys.

  • AI inside the product

    Features powered by models like Claude and GPT: personalized summaries, image analysis, writing assistants and automated narration.

  • Bubble to code

    I rebuild Bubble apps as coded applications, with AI assistance, keeping the business rules while gaining performance and freedom.

  • Automation & integrations

    APIs, n8n, payments, email and WhatsApp wired into the system to remove manual work.

Projects

Real projects

Products in production, used by real people.

Screenshot of Step 1 QBank

Step 1 QBank

Adaptive study platform for Brazilian doctors preparing for USMLE Step 1, the United States medical licensing exam.

  • Personalized study path, practice exams with pass-probability estimates and spaced-repetition flashcards (FSRS).
  • Weekly per-student summary generated with the Anthropic API and video lessons narrated with ElevenLabs.
  • Answer keys protected during exams with Row Level Security, and answers saved optimistically on unstable connections.
  • Next.js
  • TypeScript
  • Supabase
  • Claude API
  • ElevenLabs
  • Vitest
Visit project Step 1 QBank
Screenshot of Dr. Erica Ito · Hair Health

Dr. Erica Ito · Hair Health

A physician's website and blog with a custom admin panel and an AI assistant that writes articles following Brazilian medical advertising rules.

  • Fast static pages with complete SEO: structured data, Open Graph and sitemap.
  • Article assistant built on Claude, with cover images generated by Gemini.
  • Two-factor login, cookieless visit analytics and LGPD (Brazilian GDPR) compliance.
  • Astro
  • React
  • TypeScript
  • Supabase
  • Claude API
  • Gemini
Visit project Dr. Erica Ito · Hair Health
Screenshot of Med You

Med You

Platform connecting patients, doctors and laboratories, with AI features that support physicians.

  • AI-assisted prescriptions and image analysis for diagnosis.
  • Patient referrals between doctors and lab test orders sent straight to laboratories.
  • Newsletter and email delivery on AWS with Python, plus n8n automations.
  • Bubble
  • OpenAI
  • Python
  • AWS
  • Supabase
  • n8n
Visit project Med You

Process

How I work

From the first conversation to the ongoing evolution of the product.

  1. Discovery

    We talk about the idea and the problem it needs to solve.

  2. Study

    I analyze what we discussed and define the best approach.

  3. Proposal

    Scope, timeline, cost and how the project will be built.

  4. Development

    Progress is shared through regular demos.

  5. Delivery

    The system goes live and I support the first weeks of use.

  6. Evolution

    Real use brings new ideas. I stay on as a partner.

Stack

Everyday tools

The code, cloud and AI models I use to ship.

  • Next.js
  • React
  • TypeScript
  • Supabase
  • PostgreSQL
  • Vercel
  • Claude (Anthropic)
  • OpenAI
  • Cursor
  • n8n
  • ElevenLabs
  • Playwright
  • Vitest
  • Python
  • SQL
  • Bubble

Experience

From analyst to director, and back to code with AI

20+ years in tech: 15 years writing software in Delphi, C#, PHP and SQL, and the most recent years building with no-code and artificial intelligence.

  1. 2026 - present

    Full Stack Developer

    Escola Médico Na América

    I build and maintain Step 1 QBank with Next.js, TypeScript and Supabase, using Claude and Codex as development agents.

  2. 2022 - present

    Full Stack Developer (freelance)

    David Farina Informática

    Working directly with companies and founders: custom systems, integrations, AI features and Bubble-to-code migrations.

  3. 2023 - 2026

    Full Stack Developer

    Med You

    Worked side by side with the founder on product and tech: new modules, AI for prescriptions and image analysis, Supabase, AWS and n8n integrations.

  4. 2024 - 2026

    Bubble Instructor & Course Manager

    Comunidade Sem Codar

    Recorded lessons, live Q&A sessions and student support for the community’s no-code and low-code program.

  5. 2014 - 2022

    Director of Development

    Activit Tecnologia

    Ran the company and the technical decisions of a management system for clinics and hospitals, used by 10+ clinics, with a team of up to 11 people.

  6. 2009 - 2014

    Software Developer

    VCOM Tecnologia

    Debt-collection systems in Delphi and C# with SQL Server, integrated with auto-dialers, web services, SMS and email, in a Scrum team.

  7. 2007 - 2009

    Systems Analyst

    LaserTech Sistemas

    ERP and CRM for bars and restaurants on desktop, tablet and web, with fiscal printers, SAT and APIs.

Education

B.Sc. in Information Systems · UNOESTE-FIPP (Brazil)

Certifications

  • Bubble Developer Certification · Bubble
  • Million Labs Certified Bubble Associate (MCBA)
  • Bubble Basics · NoCode Alliance
  • Soft Skills, Databases, Design and API Integrations · Comunidade Sem Codar

Contact

Let's talk

Email works best: I reply quickly and in detail. You can also find me on LinkedIn or leave a message below.

Resume

Experience, projects and stack in a printable PDF.

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