A 16-bit pixel art scene inspired by Street Fighter II on SNES. A fighting stage set in a futuristic server room. A young 'Junior Dev' character in a fighting stance facing a huge robot boss labeled 'SENIOR REQUIREMENTS'.

Guide to the First IT Opportunity and How to Develop Your Career

Looking for the ‘keyboard shortcut’ to enter or level up in IT? Check out real tips on networking, open source, and personal marketing to accelerate your career.

March 4, 2026 Â· 7 min Â· Matheus Oliveira
SNES 16-bit pixel art battle screen between a tech-fantasy hero and a 'Legacy Complexity' monster

RESTful APIs with Quarkus: Use Jakarta REST and Quarkus REST for Spring Developers

A complete guide for Spring developers on RESTful APIs in Quarkus. Learn about the Jakarta REST specification, the Quarkus REST implementation, and how to build high-performance endpoints.

February 25, 2026 Â· 8 min Â· Matheus Oliveira
OCI Object Storage and PARs Illustration

OCI Object Storage: Configure file upload with Quarkus on Always Free

Learn how to configure your Quarkus application to use OCI Object Storage. Leverage Always Free’s 20GB storage and 10TB bandwidth to scale your media with PARs.

February 22, 2026 Â· 7 min Â· Matheus Oliveira
OCI Vault security illustration

Zero Trust in Practice: Protecting Secrets with OCI Vault and Quarkus

Upgrade your security to Zero Trust. Learn how to use OCI Vault and Hardware Security Modules (HSM) to protect your Quarkus application’s database secrets.

February 20, 2026 Â· 7 min Â· Matheus Oliveira
High-end Seinen manga style illustration of the Oracle Logo, featuring heavy ink brush strokes, intricate deep black cross-hatching, and a glowing golden digital aura.

SQL or NoSQL? Why Not Both? Using Oracle's Converged Database with Quarkus

Discover the power of Oracle’s converged database: how to persist and query native JSON documents using Quarkus and Hibernate Panache without needing a separate NoSQL database.

February 17, 2026 Â· 6 min Â· Matheus Oliveira
Ink-wash manga style illustration featuring a stone monolith shaped like a cylindrical database, with a glowing golden digital aura representing mTLS connection.

Quarkus + Oracle Autonomous DB: Building a Secure mTLS Connection

Learn how to connect Quarkus to Oracle Autonomous Database using mTLS Wallet authentication in OCI’s Always Free tier.

February 16, 2026 Â· 8 min Â· Matheus Oliveira
Oracle Cloud account creation interface

Oracle Cloud Free Tier: How to Get 24GB RAM and Database Free Forever

A step-by-step guide to creating your Oracle Cloud Free Tier account and securing 24GB of RAM and free databases forever.

February 15, 2026 Â· 5 min Â· Matheus Oliveira
Duke mascot in Cuphead style carrying a giant Quarkus injection needle

Quarkus Dependency Injection: The Ultimate Guide for Spring Developers

Understand how Quarkus reinvented Dependency Injection with ArC: zero runtime reflection, instant startup, and flexible configuration.

February 14, 2026 Â· 4 min Â· Matheus Oliveira
Starting in the Open Source world

How to Start Contributing to Open Source: The Definitive Guide

The digital world runs on Open Source. Discover how to get hands-on and start contributing to the projects that power the planet.

February 7, 2026 Â· 4 min Â· Matheus Oliveira

The First Contact and Quarkus Development Mode

A hands-on first contact: building your first API and discovering why Quarkus Dev Mode is a game changer for Spring developers.

January 31, 2026 Â· 6 min Â· Matheus Oliveira