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nevvesdev/README.md

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

🛠️ Tech Stack

Languages & Frameworks

Java Kotlin Go Spring

  • 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

PostgreSQL Redis MongoDB Kafka

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

Architecture & Infrastructure

Docker GitHub Actions

  • 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 IntelliJ Git GitHub

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

🎯 Focus Areas

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

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