JULIO CESAR DE ARRUDA
Hi there! I'm Julio Cesar, a Backend Software Engineer focused on building reliable, scalable systems and APIs.
About
Hi there! I’m Julio Cesar, a Backend Software Engineer focused on building reliable, scalable systems and APIs. I specialize in PHP (Laravel/Lumen), relational databases, and complex business workflows, with a passion for long-term maintainability and production-grade performance.\n\nIn my recent roles I’ve led backend evolution for nationwide mission-critical systems in Brazil, designed RESTful APIs for intricate workflows, and driven data integrity across critical operations. I enjoy refactoring legacy modules to improve stability, optimizing SQL queries to remove bottlenecks, and helping teams make sound technical decisions that balance speed and reliability.
- 4 years' experience
- Joined June 2026
Languages
- PortugueseFluent
- EnglishAdvanced
Industry experience
- Software & Internet
- Professional Services
Work experience
Led the evolution of backend services for nationwide mission-critical systems; designed and improved RESTful APIs supporting complex workflows; ensured data consistency and integrity across critical operations; refactored legacy modules improving stability and maintainability; optimized SQL queries reducing performance bottlenecks; contributed to technical decision-making and system improvements.
Developed and maintained production web applications using PHP and MySQL; improved legacy systems and enhanced maintainability; diagnosed and resolved production issues; collaborated with stakeholders to deliver business-driven solutions.
Education
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