Full Stack Web Developer

Architecting Digital
Solutions

Building robust, high-performance web applications with clean code and modern architecture.

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Portfolio

Selected
Masterpieces

Architecting scalable digital ecosystems. From high-performance enterprise platforms to security-critical audits.

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Node.jsNestJSReact

Master Data: Unified registry for Connection Points (CPE) and Market Actors (Suppliers/ORDs).

Process Automation: Regulatory workflows for Switching, Readings, and Billing using state-machine logic.

Financial Cycle: Automatic invoice generation (PDF) with Lei 5/2019 compliance, payment reconciliation, and SEPA (ISO 20022) exports.

Full-Stack Ecosystem

Energy Platform

A comprehensive, "Enterprise-Grade" solution for managing the Portuguese Energy Market (Electricity & Gas), bridging Distribution (ORD), Suppliers, and Consumers.

Node.jsNestJSReactNext.jsTypeScriptDockerAWSPostgreSQL

Live Demo

Security Audit

API Security Scanner

Automated security testing tool for REST APIs detecting OWASP vulnerabilities

Node.jsOWASPTesting

DevOps

Observability Stack

Complete monitoring solution with Prometheus, Grafana, and distributed tracing

TypeScriptPrometheusGrafana

Full-Stack Ecosystem

Food Delivery Platform

An enterprise-grade ecosystem integrating three platforms: a NestJS API, a React customer app, and a comprehensive Admin dashboard. Built for scale with real-time capabilities.

Node.jsNestJSReactNext.js+4

@Injectable() export class RolesGuard implements CanActivate { constructor(private reflector: Reflector) {} canActivate(context: ExecutionContext): boolean { const requiredRoles = this.reflector.getAllAndOverride<Role[]>(ROLES_KEY, [ context.getHandler(), context.getClass(), ]); if (!requiredRoles) return true; const { user } = context.switchToHttp().getRequest(); return requiredRoles.some((role) => user.roles?.includes(role)); } }

Security

RBAC Boilerplate

Role-Based Access Control system with hierarchical permissions and fine-grained authorization

TypeScriptNestJSPostgreSQL

Authentication

NestJS Auth Module

Production-ready authentication with JWT, refresh tokens, and OAuth2 integration

NestJSJWTPassport

"Infrastructure is the foundation of digital trust."

I specialize in building secure backends, robust observability stacks, and high-performance APIs that power the most critical business operations.

Security-First

Implementing RBAC, Zero Trust principles, and OWASP-aligned security patterns from day one.

Full Observability

Designing systems with deep tracing, real-time metrics, and proactive monitoring stacks.

Modern Architecture

Leveraging NestJS, Docker, and TypeScript to architect scalable and maintainable systems.

Backend Architecture

Designing high-performance server-side systems, resilient database schemas, and efficient microservices using Node.js and NestJS.

Security Audits & RBAC

Securing applications through advanced authorization systems, security-focused code reviews, and vulnerability scanning.

Observability & DevOps

Establishing robust CI/CD pipelines and observability stacks with Prometheus, Grafana, and ELK for 100% uptime visibility.

main.tsx

import React from 'react';

export const App = () => {

return <Future />;

}

Expertise & Tools

A curated selection of technologies I use to build robust and scalable digital products.

Backend

Node.js / NestJS
TypeScript
PostgreSQL / MySQL
Redis / RabbitMQ

Frontend

React / Next.js
Vue.js
Tailwind CSS
Framer Motion

DevOps & Security

Docker / Kubernetes
GitHub Actions
Prometheus / Grafana
OWASP Auditing

Standards

REST / GraphQL
Clean Architecture
TDD / BDD
Agile / Scrum

Frequently Asked Questions

Direct answers for technical and business inquiries.

How do you ensure the security of my web application?↓

I implement enterprise-grade authorization systems (RBAC), perform security code reviews following OWASP standards, and integrate automated vulnerability scanning into the CI/CD pipeline.

What is your approach to building scalable backend systems?↓

I use NestJS and TypeScript for typed, maintainable code. My architectures typically involve microservices or modular monoliths with Redis for caching and PostgreSQL for reliable data persistence.

Do you offer real-time features like live tracking?↓

Yes, I have extensive experience implementing real-time features using Socket.io and WebSockets, perfect for delivery platforms, dashboards, and collaborative tools.

Let's create something extraordinary.

Currently accepting new projects for Q3 2026. Available for freelance and consulting.

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