josafa@dev:~

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Josafá Marengo

Java Developer

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whoami

Java developer at one of the largest banks in Latin America.

I work on high-volume APIs with hard SLAs, regulated by the central bank — currently Open Finance, previously payments. From development through architecture, including mainframe integration.

About

stack

  • Java
  • Open Finance
  • APIs de alto volume
  • Mainframe · COBOL

Recent posts

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3 min read

The Evolution of Switch in Java: from Statement to Pattern Matching

The switch statement evolved from a basic control structure into a modern feature with pattern matching. See how this transformation makes Java code more concise, safe, and expressive.

4 min read

18 JavaScript Array Methods You Should Know

Discover the 18 JavaScript array methods every developer should know to write efficient, clean code.

3 min read

10 JavaScript String Methods You Should Know

Discover the 10 essential string methods to stand out as a JavaScript developer. Level up your skills now!

13 min read

23 Python String Methods Every Developer Should Know

Discover the 23 most-used string methods in Python. Level up your skills now and become a better developer!

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