João Victor · Backend Engineer

Building scalable systems in Java, Kotlin, and Go — with a strong focus on fintech, distributed architectures, and event-driven design.

📍 Brazil  |  📧 nevvesdev@gmail.com  |  💼 LinkedIn  |  🎥 YouTube

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🛠️ Tech Stack

Languages & Frameworks

• Java 21 — Spring Boot, Spring Security, Spring Cloud Gateway, REST APIs, JUnit 5, Mockito
• Kotlin — Spring Boot, Coroutines, JUnit 5
• Go — Gin, Chi, Clean Architecture, Zerolog, golang-migrate

Data & Messaging

• Databases: PostgreSQL, MongoDB, H2
• Cache: Redis
• Messaging: Apache Kafka, RabbitMQ

Architecture & Infrastructure

• Patterns: Clean Architecture, Hexagonal, DDD, CQRS, SAGA, Transactional Outbox
• Infra: Docker & Docker Compose, Resilience4j, Zipkin, Eureka, OpenTelemetry
• Auth: JWT, Spring Security
• CI/CD: GitHub Actions

Tools & Environment

• Linux (Ubuntu), IntelliJ IDEA, Insomnia, Git & GitHub

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🎯 Focus Areas

• Fintech & Digital Banking — core banking, digital wallets, credit