erickvasm

Hi There!
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ABOUT

I'm Erick, a backend engineer from Costa Rica. I build microservices and backend systems for banking and ERPs.

When I'm not squashing bugs, I like digging into research and traveling. I'll take any excuse to check out somewhere new.

EXPERIENCES

My professional journey

Backend Engineer

Yaipan — Escazú, Costa Rica
  • Designed and built scalable microservices and REST APIs with Java and Spring Boot, applying SOLID principles, design patterns (Factory, Strategy, Repository) and hexagonal architecture in a multi-module enterprise ERP.
  • Integrated the Evertec SDK for POS terminal payments and connected banking services (BN, BCR) via REST/SOAP.
  • Implemented OAuth 2.0 with Keycloak and Spring Security.
  • Cut billing time from 23 minutes to 2.5 seconds (99%) through SQL optimization on Oracle DB.
  • Led stack migrations (Java 8→25, Gradle 4→9, Vert.x 4→5) and mentored 6 junior developers.
Java Spring Boot Vert.x Oracle DB OAuth 2.0 Docker Jenkins

Technical Lead (Volunteer)

Awaq NGO — Biological Stations (Remote)
  • Led a team of 4 developers building a Node.js backend platform and REST APIs.
  • Ran CI/CD pipelines and code reviews.
  • Enforced documentation standards under Scrum.
Node.js REST APIs CI/CD Scrum

PORTFOLIO

These are some of my projects

A screenshot of Gym API

Gym API

Java & Spring Boot
A screenshot of Zona Descarga

Zona Descarga

Vue.js & Typescript
A screenshot of Asistente Virtual Municipalidad de Carrillo

Asistente Virtual Municipalidad de Carrillo

Node.js

TRAVELS

Places I've explored

New York City skyline from a rooftopHollywood sign from the hiking trail, Los AngelesStreet in Madrid with the Cibeles Palace tower in the backgroundBelém Tower, LisbonCasa Batlló by Gaudí, BarcelonaRooftops and cathedral tower, Porto

CONTACT

You can contact me here