Software Engineer focused on Backend Development, Data Systems and reliable application infrastructure.

I build structured, maintainable and practical backend software using Node.js, TypeScript, Express, PostgreSQL, Prisma and Docker. I completed the Common Core at 42 Luanda, a campus of the Global 42 Network, an international peer-to-peer and project-based software engineering ecosystem. I currently work as a Backend Developer at Jonsero, contributing to the development of I’m Here, a platform that connects clients with professionals and companies according to their service needs.

• Software Engineer and Backend Developer focused on REST APIs, relational databases, backend systems and containerised applications.
• Currently working as a Backend Developer at Jonsero, contributing to backend development for the I’m Here platform.
• Main stack: Node.js, TypeScript, Express, PostgreSQL, Prisma, Docker, Git and Linux-based development tools.
• Practical experience with relational database modelling, migrations, authentication, access control, validation, error handling, API documentation and production-oriented backend development.
• Since 2021, I have provided freelance software development and technical support for students, individual clients and small projects.
• Joined 42 Luanda in November 2023 and completed the Common Core in 2026 as part of the Global 42 Network.
• Through 42, I developed practical foundations in C, C++, algorithms, Unix/Linux, networking, memory management, debugging, Docker and collaborative software development.
• Completed the fifth academic year of Computer Engineering; final thesis in progress, with defence expected in 2027.
• Building practical open-source contribution experience in the Fastify ecosystem through documentation-focused pull requests, contribution workflow study and technical notes.
• Open to remote and international Software Engineering, Backend Development and Database Support opportunities.

Node.js · TypeScript · JavaScript · Express · REST APIs · JWT · RBAC · Validation · Error Handling

PostgreSQL · MySQL · SQLite · Prisma ORM · Supabase · SQL · Relational Modelling · Migrations · Seeds · Data Validation

Docker · Docker Compose · Linux/Ubuntu · Git · GitHub · VS Code · Postman · Swagger · Makefile · Technical Documentation

Luanda, Angola · Remote | August 2026 – Present

Contribute to the backend development of I’m Here, a platform that connects clients with professionals and companies according to their service needs. My work includes API development, database integration, backend business logic, data validation, debugging, reliability improvements and integration with frontend functionality. I also contribute to the evolution of production-oriented backend features and the technical structure required to support the platform as it grows. Product: I’m Here — Live Platform

Luanda, Angola · Remote / Hybrid | 2021 – Present

Since 2021, I have provided freelance software development and technical support for students, individual clients and small projects. My work has included debugging, project structure, database modelling, feature implementation, code organisation, technical explanations, documentation and deployment preparation. Over time, my freelance work evolved from projects involving C, C++ and Java towards backend development, databases, REST APIs, Node.js and TypeScript. I am currently focused on international freelance work in backend development, database support, data systems, technical support and backend-oriented automation.

The projects below are selected examples of private, academic, collaborative and independently developed technical work. Public demos and releases are included where available.

Software Engineer / Backend Developer | Node.js, TypeScript, Express, Prisma, PostgreSQL, Docker, JWT

Designed and developed backend modules for a private institutional personnel management system, including relational database modelling, REST APIs, JWT authentication, role-based access control, database migrations and features for personnel management, organisational units, attendance, leave management and auditing. Project status: Private institutional software.

Software Engineer / Backend Developer | Node.js, TypeScript, Express, Prisma, PostgreSQL, Docker, Nginx, SSE, WebSocket

Contributed to backend and infrastructure work for a collaborative social platform built for the 42 community. Worked on PostgreSQL integration and administrative backend features involving users, posts, reports, support tickets, permissions and account bans. Designed and implemented the local containerised development environment with five services: backend, PostgreSQL database, user frontend, admin frontend and Nginx reverse proxy. The team project received a score of 125/100 at 42 Luanda.

Live Demo: https://42-devs-ft-transcender.vercel.app/

Admin Dashboard Demo: https://42-devs-ft-transcender.vercel.app/admin/login

Backend Developer | Node.js, TypeScript, Express, Prisma, PostgreSQL, Docker, Swagger

Designed and developed a REST API for managing professional courses, learning modules, job opportunities and job applications. Implemented routes, controllers, services, data access layers, JWT authentication, per-user resource ownership, filtering, pagination, transactions, validation and centralised error handling. Added automated integration testing, Docker-based local infrastructure and interactive OpenAPI documentation. The API is deployed publicly and can be explored and tested directly through Swagger.

Live Swagger Documentation: https://career-tracker-api.vercel.app/api-docs

Repository: github.com/MauricioMoraisZage/career-tracker-api

Software Developer | Windows Desktop Application

Designed and developed a desktop application focused on healthier computer usage and screen-time habits. Implemented configurable visual and physical break reminders, usage monitoring, statistics, application settings and automatic startup support. Prepared and published a portable Windows x64 release that can be executed without requiring a development environment. The public release also includes a SHA-256 checksum for file verification.

Windows Release v1.0.2: https://github.com/MauricioMoraisZage/vision-guard-pc/releases/tag/v1.0.2

I am actively building practical open-source contribution experience with a focus on backend development, Node.js, Fastify, TypeScript, documentation, testing practices and collaborative software engineering workflows.

I am studying and contributing to the Fastify ecosystem to improve my understanding of backend framework architecture, API design, request lifecycle, application hooks, plugin-based systems, TypeScript patterns, automated testing and open-source review workflows. My current open-source work includes reading contribution guidelines, running projects locally, studying existing issues and documentation, submitting focused pull requests and documenting the lessons learned throughout the process.

• fastify/fastify — docs: clarify application hooks instance context
• fastify/fastify-plugin — docs: clarify async and callback plugin styles

I document my preparation, study notes, contribution workflow, submitted pull requests and lessons learned in: Open Source Journey