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Heyling Marquez

@heylingmarquez

Backend Developer at Kelisto building Ruby on Rails APIs and automated RSpec tests for reliable software.

At Kelisto, I develop and maintain Ruby on Rails applications and RESTful APIs. I also design and maintain automated tests using RSpec and TDD principles.

I work with third-party APIs and external providers, and use PostgreSQL and MongoDB for database modeling and optimization.

When defects or performance issues arise, I investigate their root causes. I also refactor legacy code to improve maintainability, reliability, and scalability.

Previously, as a Junior Frontend Developer at UniqueHomeTech, I supported frontend development and application maintenance, implementing designs with HTML, CSS, Angular, and JavaScript. I also provided backend support using Python.

Experience

Work history, roles, and key accomplishments

Current

Backend Developer

Current

Kelisto

Jan 2021 - Present (5 years 9 months)

Developed and maintained Ruby on Rails backend applications and RESTful APIs. Designed and maintained automated tests using RSpec and TDD principles, integrated third-party APIs, and performed database modeling and optimization.

Ruby on Rails REST APIs RSpec Test Driven Development PostgreSQL MongoDB Third Party Integrations Agile Code Review

Junior Frontend Developer

UniqueHomeTech

Jan 2020 - Jan 2021 (1 year)

Supported the development team with frontend implementation and application maintenance. Translated UI/UX designs into HTML and CSS, developed frontend functionality using Angular and JavaScript, and performed backend support tasks using Python.

HTML CSS Angular JavaScript Python Agile