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I am a Java backend developer with 3+ years of experience building microservices, REST APIs, and event-driven systems using Spring Boot. I'm hands-on with Apache Kafka (consumer/producer), hexagonal architecture, AWS, Docker, and CI/CD pipelines, and I thrive in agile, cross-functional teams. Throughout my career I designed and shipped backend features at AJ Vierci — Retail Technology, Infogain Uruguay, and as founder of Vistula Uruguay, where I built a WordPress/PHP e-commerce platform. I enjoy turning complex requirements into scalable, reliable systems and collaborating with product and QA teams to deliver value.…I am a Java backend developer with 3+ years of experience building microservices, REST APIs, and event-driven systems using Spring Boot. I'm hands-on with Apache Kafka (consumer/producer), hexagonal architecture, AWS, Docker, and CI/CD pipelines, and I thrive in agile, cross-functional teams. Throughout my career I designed and shipped backend features at AJ Vierci — Retail Technology, Infogain Uruguay, and as founder of Vistula Uruguay, where I built a WordPress/PHP e-commerce platform. I enjoy turning complex requirements into scalable, reliable systems and collaborating with product and QA teams to deliver value.

Stefan Wrzosek

Back-End Developer, Full Stack Developer, Web Developer, +2

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I am a Java backend developer with 3+ years of experience building microservices, REST APIs, and event-driven systems using Spring Boot. I'm hands-on with Apache Kafka (consumer/producer), hexagonal architecture, AWS, Docker, and CI/CD pipelines, and I thrive in agile, cross-functional teams. Throughout my career I designed and shipped backend features at AJ Vierci — Retail Technology, Infogain Uruguay, and as founder of Vistula Uruguay, where I built a WordPress/PHP e-commerce platform. I enjoy turning complex requirements into scalable, reliable systems and collaborating with product and QA teams to deliver value.…I am a Java backend developer with 3+ years of experience building microservices, REST APIs, and event-driven systems using Spring Boot. I'm hands-on with Apache Kafka (consumer/producer), hexagonal architecture, AWS, Docker, and CI/CD pipelines, and I thrive in agile, cross-functional teams. Throughout my career I designed and shipped backend features at AJ Vierci — Retail Technology, Infogain Uruguay, and as founder of Vistula Uruguay, where I built a WordPress/PHP e-commerce platform. I enjoy turning complex requirements into scalable, reliable systems and collaborating with product and QA teams to deliver value.

Available to hire

I am a Java backend developer with 3+ years of experience building microservices, REST APIs, and event-driven systems using Spring Boot. I’m hands-on with Apache Kafka (consumer/producer), hexagonal architecture, AWS, Docker, and CI/CD pipelines, and I thrive in agile, cross-functional teams.

Throughout my career I designed and shipped backend features at AJ Vierci — Retail Technology, Infogain Uruguay, and as founder of Vistula Uruguay, where I built a WordPress/PHP e-commerce platform. I enjoy turning complex requirements into scalable, reliable systems and collaborating with product and QA teams to deliver value.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

Spanish; Castilian

Fluent

English

Fluent

French

Intermediate

Work Experience

Java Backend Developer at AJ Vierci — Retail Technology

June 1, 2024 - Present

Design and develop Java microservices with Spring Boot and Oracle SQL within a hexagonal architecture; consume Apache Kafka components (consumer/producer) for asynchronous, event-driven service communication; deliver RESTful API integrations and scalable, fault-tolerant backend features.

Java Developer / QA Automation at Infogain Uruguay — Software Consulting

February 1, 2023 - June 30, 2024

Built Java test automation frameworks using Selenium for distributed system validation; participated in full agile cycle: sprint planning, code reviews, and issue resolution; managed development tasks and sprint workflows via Azure DevOps Boards.

Founder & Full-Stack Developer at Vistula Uruguay — E-Commerce

July 1, 2016 - March 31, 2023

Built and maintained a WordPress/PHP e-commerce platform from the ground up, including custom integrations and storefront features; managed all business operations: development, sales, billing, and customer consulting; developed foundational skills in web development, backend logic, and product ownership.