Senior Backend Developer | Systems Architecture | Legacy Systems & Refactoring Expert
🇧🇷 Brazilian developer, open to learning and new opportunities.
🇺🇸 This profile is written in English to reach a broader audience.
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Master's Degree in Computer Science (2018 – 2021)
Federal University of Technology – Paraná (UTFPR)
Thesis: A Refactoring Agent for Java Projects Using Design Patterns -
Bachelor's Degree in Systems Analysis and Development (2009 – 2012)
Federal University of Technology – Paraná (UTFPR)
Repository: ms-payment-gateway
Tech Stack: PHP/Laravel, REST APIs, Banking Integration
Status: Production-Ready
What it does:
- Multi-bank payment gateway integration (Itaú, Bradesco, Banco do Brasil, Santander)
- Robust error handling and transaction reconciliation
- Secure payment data handling following compliance standards
- Extensible architecture for adding new banks
Why it matters for senior roles:
- ✅ Real-world financial system complexity
- ✅ Bank integration patterns and best practices
- ✅ Production-grade error handling and edge cases
- ✅ Security considerations for financial data
- ✅ Scalable architecture design
Repository: gestao-condominio
Tech Stack: TypeScript, Full-stack System
Status: Active Development
What it does:
- Complete online condominium management system
- Resident and maintenance management
- Multi-tenant architecture with role-based access
- Real-time updates and notifications
Senior aspects:
- ✅ Complex business logic handling
- ✅ Multi-tenant SaaS architecture
- ✅ User permission and access control systems
- ✅ Scalable data modeling
Repository: github-dev-ranker
Tech Stack: TypeScript, GitHub API Integration
Status: Active
What it does:
- Analytics and ranking system for GitHub developers
- Integrates with GitHub API for real-time data
- Performance metrics and developer insights
Senior aspects:
- ✅ API integration and data processing at scale
- ✅ Analytics engine design
- ✅ Efficient data aggregation patterns
- Backend Development & System Design - Building scalable, maintainable systems
- Microservices Architecture - Service separation and integration patterns
- Legacy System Refactoring - Modernizing existing codebases with minimal risk
- API Design & Integration - REST APIs, payment gateways, third-party systems
- Real-time Communication - Messaging queues, event-driven architecture
- Code Quality & Maintainability - Testing, documentation, design patterns
I value stability, readability, and solutions that scale with team understanding.
- PHP (Expert - 10+ years)
- Java (Advanced - Architecture & Patterns)
- JavaScript/TypeScript (Advanced - Backend & Frontend)
- Go (Intermediate - Concurrent systems)
- Python (Intermediate - Data & Scripts)
- Laravel & Laravel Lumen - Full-featured and lightweight API development
- Node.js - Real-time systems and high-performance backends
- Docker - Containerization and infrastructure as code
- RabbitMQ - Asynchronous messaging and event handling
- MySQL & PostgreSQL - Relational data design and optimization
- MongoDB - NoSQL and document-based systems
- BigQuery - Data warehousing and analytics
- SQL Server 2008 - Enterprise database systems
- Jenkins - CI/CD pipelines and automated deployments
- Docker - Container orchestration and multi-environment setups
- Zabbix - Monitoring, alerting, and system dashboards
- Git Workflows - Branching strategies and collaborative development
- PHPUnit - PHP unit and integration testing
- JUnit - Java testing frameworks
- Jest - JavaScript/TypeScript testing
- Continuous Learning - Always improving skills and exploring new technologies
- Respect for Existing Systems - Understanding legacy code before optimizing
- Practical Solutions - Solving real business problems, not over-engineering
- Improvement Over Perfection - Incremental enhancements that create value
- Code as Communication - Writing code that other developers can understand and maintain
- Production-ready systems - Full-stack projects deployed in real environments
- Architecture examples - Design patterns, microservices, and system design
- Refactoring studies - Legacy code modernization techniques
- Integration projects - Third-party APIs, payment gateways, data systems
- Learning experiments - Exploring new technologies and frameworks
Most repositories reflect things I've actually used, deployed, or studied in depth.
- GitHub: https://github.com/thyagopacher
- Open to: Senior Backend Development, System Architecture, Technical Leadership
- Compensation Range: $13k+ USD/month
Good software is built with clarity, responsibility, and continuous improvement.
I don't just write code—I architect solutions.