Available for remote work

Back-end systems built for real business needs.

I am Nicholas de Oliveira Eugênio, a Back-end Developer focused on REST APIs, clean architecture, and scalable applications with Node.js, Express, and PostgreSQL.

View projects GitHub
Node.jsExpressPostgreSQLJWTJestGit RenderCloudflareNeon DatabaseTypeScriptRedisPrismaJavaScriptDocker

Selected work

Featured projects

Projects currently pinned on my GitHub profile, automatically synchronized during deployment.

Open source

More from GitHub

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Technical foundation

A practical stack for structured systems.

I use a focused set of tools to build APIs, model data, validate behavior, and ship maintainable applications.

Back-end

Node.js · Express.js · REST APIs · JWT · Zod · Bcrypt

Data & cache

PostgreSQL · SQL · Knex.js · Prisma ORM · Redis · Neon Database

Quality

Jest · Supertest · SOLID · Clean Code · Layered Architecture

Delivery

Git · GitHub · Docker · Render · Vercel · Cloudflare

Front-end

React · Vite · HTML · CSS · SEO · Responsiveness · UX/UI

Languages

JavaScript · TypeScript

Working approach

How I build

  1. 01

    Understand the problem

    Start with the business need and the expected outcome.

  2. 02

    Structure the solution

    Model data and define clear application responsibilities.

  3. 03

    Build and test

    Implement maintainable features and validate behavior.

  4. 04

    Deploy and evolve

    Publish reliably and improve through iteration.

Professional journey

Learning by building and solving.

  1. Administrative Assistant

    EMEG - Empresa de Mecânica Pesada. Administrative, financial, and operational processes.

  2. Web Design Express

    Danki Code.

  3. Back-end studies with Node

    Beginning of the back-end development journey.

  4. Analysis and Systems Development

    FACAM - completed in 2025.

  5. Front-end Training

    Hora de Codar.

  6. Cash Flow and Financial Management

    SEBRAE.

Get in touch

Let's build something useful?

I am available for remote work and conversations about back-end development.

Send an email