André Maia

I am a Java Backend Engineer with 5+ years of software development experience, focused on backend systems, distributed architectures, APIs, and financial technology.

My current work involves high-criticality systems for the banking sector, where I develop and maintain Java and Spring Boot microservices, REST APIs, and synchronous and asynchronous integrations. I work with Apache Kafka, including producers, consumers, topic-based communication, and Dead Letter Queue handling, as well as Oracle, MongoDB, automated testing, performance testing, CI/CD pipelines, and production troubleshooting. I also participate in backlog refinement, technical analysis, user story definition, development, testing, and functional validation.

Previously, I worked on backend systems for payments, billing, banking integrations, marketplaces, and condominium management. During that experience, I progressed from Junior to Mid-Level Java Developer and worked with Java, Spring, MySQL, MongoDB, Amazon SQS, Datadog, Backend-for-Frontend services, and integrations with LLM-based solutions. I also solved complex database concurrency issues and contributed to integrations designed to improve payment processing and reduce banking costs.

Before fully transitioning into software engineering, I worked in accounting and financial controllership. That background gives me practical knowledge of bank reconciliation, financial controls, payroll, projections, and accounting processes, which is particularly useful when working on banking, payments, fintech, and financial systems.

I am currently pursuing a Professional Master's Degree in Computational Modeling and Systems at Unimontes. My research focuses on training and applying multimodal models to develop a hybrid predictive model. This has increased my interest in the intersection of backend engineering, distributed systems, AI, and data-intensive applications.

I am especially interested in remote international opportunities involving Java, Spring Boot, distributed systems, Kafka, event-driven architectures, banking or fintech, platform/backend engineering, and AI-enabled backend systems. I value technically challenging environments where reliability, scalability, system design, and continuous learning are important.

English: Full Professional Proficiency, CEFR C1.