Software Developer ยท Systems Analysis and Development
Business software, back-end services, and practical web products.
I build applications around real workflows: authenticated APIs, relational data, transaction-safe business rules, responsive interfaces, automation, and tests that make the behavior reviewable.
About
Learning software engineering by building complete systems.
I am completing a degree in Systems Analysis and Development. My portfolio is where I apply subjects such as software architecture, databases, networks, operating systems, requirements, and secure development.
I prefer projects with clear domain rules and visible trade-offs. The documentation separates implemented behavior, local validation, and future production work so that each claim can be checked against the code.
Technical focus
Tools used across the portfolio.
Back-end development
Python, FastAPI, Go, Node.js, REST APIs, authentication, authorization, validation, and background workers.
Data and consistency
PostgreSQL, SQLite, SQLAlchemy, Alembic, schema design, transactions, idempotency, and concurrency control.
Front-end development
React, TypeScript, JavaScript, HTML, CSS, responsive layouts, forms, dashboards, and API integration.
Quality and delivery
Pytest, Go tests, integration tests, GitHub Actions, Docker, Compose, technical writing, and reproducible setup.
Security fundamentals
Least privilege, password hashing, secret management, input validation, encrypted fields, and audit trails.
Additional experience
Automation, Discord integrations, commercial websites, Unreal Engine, Unity, and user-facing product communication.
Selected projects
Work that can be reviewed and discussed.
ZirphasOS repair management
A FastAPI and PostgreSQL system for repair intake, estimates, inventory, payments, customer tracking, and controlled order transitions.
Open repositoryReact business dashboard
A responsive dashboard with derived metrics, category comparisons, stock alerts, and project progress.
View projectDiscord support ticket bot
A Node.js integration with slash commands, private ticket channels, staff permissions, logs, and interactive components.
View projectMarket automation CLI
A Python and SQLite application for product records, inventory changes, sales, reports, and automated tests.
View projectInteractive movement systems
Prototype work for vehicle movement, animation, and interactive simulation in Unreal Engine and Unity.
View projectRental website
A responsive site for a Brazilian apartment rental business, with unit filters, structured information, and a WhatsApp inquiry flow.
View case studyEngineering approach
Clear scope, reproducible setup, honest validation.
Repository documentation explains how to run each project, which checks were completed, and which production concerns remain. Localized applications retain Portuguese interfaces when that matches their intended users.
Contact
Open to software development opportunities.
For roles, internships, or project discussions, contact me through LinkedIn.