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Guilherme Urnau

@guilhermeurnau

Message

I build scalable Java backend systems, integrations, and automation that improve business decisions and costs.

Brazil

Message

What I'm looking for

I'm looking for new backend challenges on teams that value clean code, reliable architecture, collaboration, and delivering real business value.

I've built backend systems for Patrimonial Segurança, including a cost and profitability platform that integrates payroll, uniforms, PPE, taxes, and variable costs to support accurate pricing and margin protection.

At Zucchi Consultoria, I led the delivery of a corporate governance platform spanning KPIs, SIPOC, task distribution, a corporate academy, scheduling, and executive decision support. I also developed resilient meeting recording with AI-powered transcription, managed Hostinger infrastructure, and used LLMs responsibly to accelerate testing, refactoring, and delivery.

Most recently, I've developed Java 25 and Spring-based REST APIs at Minesoft, connecting distributed systems through scalable microservice integrations. I value clean code, layered architecture, reliable databases, and software that delivers real operational value.

Experience

Work history, roles, and key accomplishments

Backend Java Developer

Minesoft

Jun 2026 - Jul 2026 (1 month)

Developed RESTful APIs using Java 25 and the Spring ecosystem, implementing integrations between distributed systems and managing PostgreSQL database versioning with Liquibase.

Java Spring Boot Spring Security REST APIs PostgreSQL Liquibase Microservices

Education

Degrees, certifications, and relevant coursework

IFSC – Federal Institute of Santa Catarina

Technical Degree, Computer Programming

2012 - 2017

Completed an integrated technical program in computer programming, gaining a solid foundation in software development, object-oriented programming, databases, debugging, and agile methodologies.