Germano Rocha Stamm, Developer in Porto Alegre - State of Rio Grande do Sul, Brazil
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Germano Rocha Stamm

Verified Expert  in Engineering

Back-end Java Developer

Porto Alegre - State of Rio Grande do Sul, Brazil

Toptal member since April 2, 2025

Expertise
Back-end DevelopersJavaJUnitSQLSpring BootSpringREST APIMicroservices DevelopmentPostgreSQLCloud EngineeringDockerKeycloakAWS
Bio

Germano is a seasoned back-end developer with 10 years of experience crafting high-performance Java solutions, primarily in the banking and insurance sectors. Specializing in Spring Boot and Quarkus, he builds scalable, reliable microservices that drive business success. Passionate about collaboration and innovation, Germano thrives in team-driven environments, ensuring high-quality solutions that make an impact.

Portfolio

Avanade
Java, Spring Boot, Quarkus, Camunda BPM, Apache Kafka, Docker, Pub/Sub...
DXC Technology
Java, REST, Microservices, Docker, Spring Boot, Spring, APIs, REST APIs...
Datum TI
Java EE 6, Java, Spring Boot, PostgreSQL, Hibernate, Spring, APIs, REST APIs...

Experience

  • Java - 10 years
  • Back-end - 10 years
  • Spring Boot - 6 years
  • REST - 6 years
  • Microservices - 5 years
  • PostgreSQL - 4 years
  • Hexagonal Architecture - 3 years
  • Quarkus - 1 year

Availability

Full-time

Preferred Environment

Java

The most amazing...

...banking project I've led as a principal developer involved mastering new tech and mentoring developers to enhance efficiency, code quality, and project success.

Work Experience

Consultant Back-end Developer

2022 - PRESENT
Avanade
  • Developed an API to communicate with an insurance company calculator.
  • Advanced from a senior developer to a consultant developer through a promotion.
  • Contributed to developing a back end to change the company that processed payments to a bank.
Technologies: Java, Spring Boot, Quarkus, Camunda BPM, Apache Kafka, Docker, Pub/Sub, Microservices, Hexagonal Architecture, REST, Spring, APIs, REST APIs, Google Cloud Platform (GCP), Azure, Spring Microservice, SQL, React

Business Consulting Expert

2019 - 2022
DXC Technology
  • Developed an application to improve the visibility of employee highlights in the company.
  • Created an application to automate medical appointment scheduling for a clinic.
  • Drove digital transformation to clients while working in a multidisciplinary team.
Technologies: Java, REST, Microservices, Docker, Spring Boot, Spring, APIs, REST APIs, Google Cloud Platform (GCP), Amazon Web Services (AWS), Spring Microservice, SQL

Java Developer

2018 - 2019
Datum TI
  • Collaborated with a team to develop new features in a legacy system.
  • Employed Spring Boot to develop REST APIs with Java 8.
  • Served as a full-stack developer using Jakarta Server Pages (JSP) on the front end.
Technologies: Java EE 6, Java, Spring Boot, PostgreSQL, Hibernate, Spring, APIs, REST APIs, SQL

Junior Java Developer

2017 - 2018
Pontifical Catholic University of Rio Grande do Sul
  • Collaborated with a team to develop new features in a legacy system.
  • Tracked and fixed bugs. Developed new features using Redmine.
  • Learned older technologies to work with a credit union client.
Technologies: Java EE 6, PostgreSQL, JDBC, SQL

Mobile Developer Intern

2015 - 2017
Hewlett Packard Enterprise
  • Developed an Android app to accelerate the hiring process.
  • Worked in a fast-paced team, learning new technologies to apply in prototypes for clients.
  • Created an app to buy things with the phone camera directly from an image of the product.
Technologies: Java, Android, SQL

Experience

Car Repossess Project

Spearheaded back-end development for a Java with Quarkus application focused on car repossession from scratch. I took on the challenge of learning and implementing new technologies while mentoring developers to ensure a smooth and efficient development process. I also played a key role in designing scalable and high-performance solutions, contributing to the project's success and the team's growth.

Education

2014 - 2025

Engineer's Degree in Computer Engineering

Pontifical Catholic University of Rio Grande do Sul - Porto Alegre, Rio Grande do Sul, Brazil

Skills

Libraries/APIs

REST APIs, JDBC, React

Tools

Keycloak, Camunda BPM

Languages

Java, SQL, C

Frameworks

Spring Boot, Spring, JUnit, Mockito, Spring Microservice, Jakarta Server Pages (JSP), Hibernate

Paradigms

Microservices, REST

Platforms

Docker, Google Cloud Platform (GCP), Azure, Amazon Web Services (AWS), Android, Apache Kafka

Storage

PostgreSQL

Other

Hexagonal Architecture, APIs, Back-end, Quarkus, Java EE 6, Pub/Sub

Collaboration That Works

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