For 7 years I've been turning ideas into complete digital products: understanding what people need, designing the interface, writing the code and making sure everything ships safely.
AI brings the speed. Engineering makes sure it doesn't turn into technical debt.
Context, people and the product's goal before any technical decision.
Use cases, contracts, data model and architecture defined before the first line.
AI is my pair programmer: the test fails first, then comes the code.
Infrastructure as code and a pipeline that blocks the release if a test fails.
WhatsApp and Instagram in one place: a serverless webhook that verifies every event, an API on Lambda, a React dashboard and Postgres with row-level security, so each user only sees what they're allowed to.
Conversational AI to practice professional English, with text and voice chat, plus a transcript and translation of every message.
Access rules written in a DSL, in the business's own vocabulary: centralized, consistent and auditable decisions.
A blog in three languages with Notion as its CMS and an ETL pipeline that mirrors the content into its own database.
Application and domain kernels, persistence patterns and pluggable auth, token and storage providers.
I've also built: a platform for nutritionists (React, Node.js, OpenAI) and a poker hand calculator that runs across multiple CPU cores.
Before tech, I was an officer in the Rio de Janeiro Fire Department. There I learned to lead, stay calm under pressure and communicate clearly, and that's how I work with a team.
Portuguese (native) · Spanish (fluent) · English (intermediate)
A TypeScript CRM/ERP, from architecture to AWS deployment, with the WhatsApp and Instagram integration already in production.
A user and authorization system based on a permission-rule DSL, external integrations and Power BI.
Complete products as an independent engineer, from interface design to delivery and maintenance.
Leadership, team and resource management, discipline and performing under pressure.
Let's talk and turn it into a real product.
contato@yagomarinho.com.br