Open to opportunities

Guilherme Orlandini

@guilhermeorlandini

Message

Java backend engineer with 15+ years building event-driven microservices and scalable distributed systems.

Brazil

Message

What I'm looking for

I’m looking for a remote-friendly team where I can build event-driven microservices with Java/Spring Boot and Kafka, improve performance and reliability with observability, and collaborate in cross-functional Agile delivery.

I’m a Java Backend Engineer with 15+ years building distributed systems and event-driven microservices, with deep expertise in Spring Boot, Apache Kafka, AWS, and scalable REST APIs. I’ve built reactive, non-blocking services with Spring WebFlux (Mono/Flux), and I apply security and reliability practices using Spring Security, OAuth2, JWT, TDD, and integration/performance testing.

I’ve improved system uptime by ~40% and API response times by 20–40% through profiling, load testing, and observability (Datadog APM, Micrometer, log analysis). As a Technical Co-Founder and Lead Backend Engineer, I guided architecture and roadmap decisions, mentored teams, and delivered backend automation integrating OpenAI APIs and Ollama—cutting exam creation time for professors by 50%.

Experience

Work history, roles, and key accomplishments

Current

Java Backend Engineer

Current

Unifio

Jan 2020 - Present (6 years 5 months)

Designed and maintained scalable Java microservices and REST APIs with Spring Boot and event-driven messaging via Apache Kafka (and Google Cloud Pub/Sub), building reactive WebFlux controllers for high concurrency. Improved system uptime by ~40% and API response times by 20–40% using profiling, log analysis, and Datadog/Micrometer observability; also automated CI/CD and implemented secure OAuth2/J

Java Spring Boot Spring WebFlux (Mono Flux)Apache Kafka Google Cloud Pub Sub Docker GitHub Actions OAUTH2

Current

Professor of Software Engineering

Current

FATEC Ourinhos

Jan 2011 - Present (15 years 5 months)

Teach Software Engineering principles, Java development, and OOP to undergraduate students while continuing parallel industry work.

Software Engineering Java Object Oriented Programming (OOP)Mentorship

Co-Founder & Lead Backend

Websonora

Jan 2008 - Jan 2020 (12 years)

Led technical roadmap and backend architecture, mentoring developers and scaling the platform to serve thousands of users. Built core backend components from scratch using Java/JDBC/JSP and enabled Ford SYNC/AppLink voice navigation, later included in Ford's AppLink application catalog.

Java JDBC JSP backend architecture Agile Leadership Scaling

Software Engineer

Tevecenter

Jan 2003 - Jan 2008 (5 years)

Developed backend and database-driven applications for SMBs, gaining experience delivering client-facing software and working with distributed data systems.

Java SQL MySQL Backend Development Distributed Systems Client Facing Integration Testing API Development