Make backends behave. Keep systems boring. Ship things that last.

Victor Hugo

Software Engineer • Java & Spring Boot • Brazil

Building at GFT Technologies

I make backends behave (mostly). Software engineer at GFT Technologies ↗, allocated to Itaú Unibanco, building and maintaining Java and Spring Boot services for systems that are, charitably, enterprise-scale. I like the unglamorous parts of software: the migrations, the on-call, the systems nobody notices until they break. Before this I did IT support at a school, which taught me more about staying calm under pressure than any course did.

Professional Experience

GFT Technologies ↗

Software Engineer — Java

Backend services for Itaú Unibanco with Java, Spring Boot and Quarkus.

Oct 2025 — Present

Allocated to Itaú Unibanco, one of Brazil's largest banks, contributing to the development, support and evolution of enterprise applications in Agile teams. Designing, developing and maintaining backend solutions with Java, Spring Boot and Quarkus, focused on scalability, reliability and software quality.

JavaSpring BootQuarkusKafkaRabbitMQPostgreSQLRedisKeycloakDockerTerraformAWSPrometheusGrafana

Colégio Adventista

IT Support Analyst I

Technical support for faculty, staff and students across systems and network.

Apr 2025 — Sep 2025

Provided technical support to faculty, staff and students, troubleshooting issues across enterprise systems, productivity software and network infrastructure. Learned that "it's broken" rarely means what people think it means.

WindowsNetwork AdministrationHardware TroubleshootingIT DocumentationUser Training

Proof of Work

NoviPay

NoviPay — Payments platform

Checkout with Pix and card, a Telegram sales bot and a billing API in one account. No monthly fee, pay only on approved sales.

PaymentsPixBilling APITelegram Bot

Bancada

Bancada — Learn DevOps by doing

Open source platform to practice DevOps with simulators, exercises, quizzes and interactive labs. 168+ hands-on activities.

Next.jsTypeScriptRadix UIPWAOpen Source

Banking Transfer API

Digital banking REST API where concurrent transfers can't corrupt balances: pessimistic locking on both accounts, Flyway migrations and CI.

Java 21Spring Boot 3PostgreSQLJPA+4

Estudo Bíblico

Bible Study — Adventist

A Bible study platform with interactive study guides, progress tracking and personalized reading plans.

Next.jsReactTypeScript+1

Currently

Itaú Unibanco @ GFT

REST APIs, microservices and code reviews at bank scale.

☕

Learning in public

Event-driven systems with Kafka, observability and cloud.

GitHub Contributions @victrhugo

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Stack I use

Technologies I work with to build systems that stay understandable as they grow

Selected Engineering Work

Banking API: race-free transfers with PESSIMISTIC_WRITE locks 2026

Why pessimistic over optimistic locking for hot accounts, with JUnit 5 + Mockito tests on every push.

Simpli.fy: IoT telemetry with NestJS and ESP32 2024

Containerized microservices collecting sensor data from upcycled hardware.

Bible Study: structured reading with progress tracking 2026

Six themed tracks, modules and studies with per-user progress.

Bancada: interactive DevOps simulators in the browser 2026

53 tools, 44 quizzes and 20 exercises for engineers who prefer a terminal to slides.

If you've read this far, you might be interested in what I do.

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Let's connect

Find me across code, work and whatever I'm building next

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