Full Stack Web Developer

Jonathan Merlo Apuril

Asunción, Paraguay • EU Passport Holder • Fluent English Speaker

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About me

I'm a Full Stack Web Developer with nearly 5 years of professional experience designing, developing, and delivering modern, scalable web applications.

I started my career working across the full stack and have continued building complete solutions — from responsive, user-centric frontends with React, Next.js, TypeScript and Tailwind CSS, to robust backends using PHP, Java, Python (Django) and Ruby on Rails.

I enjoy working with databases like PostgreSQL, integrating cloud services, building clean REST APIs, and writing clear documentation. I'm an avid learner who loves exploring new technologies to stay current.

Outside of coding, I like playing videogames and watching movies (the grainier the better).

Professional Experience

Software Developer

Paraguay Security S.A. • Asunción, Paraguay

Aug 2023 – Nov 2024

  • Designed and developed full-stack web applications with React, Next.js, TypeScript, Tailwind CSS, and Supabase, creating responsive, user-centric interfaces.
  • Engineered high-performance UIs and optimized PostgreSQL database solutions, boosting application scalability and data efficiency.
  • Collaborated with cross-functional teams to deliver features on time and to exact specifications.

IT Support Specialist

Quality Care Medical Center • San Bernardino, CA

May 2021 – Jul 2021

  • Automated repetitive data entry processes and developed simple, user-friendly guides for non-technical staff, streamlining daily operations.
  • Resolved software and hardware issues in person and remotely.
  • Maintained and monitored daily IT operations.

IT Consultant

IDOM Consulting • Asunción, Paraguay

Feb 2019 – Dec 2019

  • Built critical modules for the Expropriation Management System using PHP and CodeIgniter; designed dynamic web forms with JavaScript, jQuery, HTML, CSS, and Bootstrap; structured PostgreSQL databases with custom reporting via JasperReports.
  • Contributed to requirements gathering and technical planning for the Document Management System (SGD 2.0); developed reusable Django components and polished frontend interfaces using HTML and CSS.

Software Developer

Tavatech • Asunción, Paraguay

Aug 2016 – Feb 2018

  • Engineered enterprise-grade backend modules with Java, Spring MVC, and Hibernate to support high-traffic production systems.
  • Led full software development lifecycle — from architecture and design to deployment on Apache Tomcat.
  • Managed CI/CD pipelines with Maven and conducted code reviews.
  • Contributed to frontend development of the flagship Chispawer platform for Palermo S.A. using Ember.js with custom CSS styling.

Web Developer

Nexoos • Asunción, Paraguay

Dec 2015 – Jul 2016

  • Maintained and enhanced the core Nexoos Paraguay platform built on Ruby on Rails.
  • Translated business requirements into clean, production-ready code while rapidly resolving bugs.
  • Localized homepage content into English, broadening user reach for international audiences.

Technical Skills

Click any skill to see where I used it

Featured Projects

Empower School – Thesis Project

Full-featured modern web application built with Vite, React, Firebase, and Tailwind CSS.

View on GitHub 🔗

Personal Portfolio

This very website — a responsive portfolio built with Next.js, React, TypeScript, and Tailwind CSS, featuring smooth navigation and a clean, modern design.

View on GitHub 🔗

Job Board API

Full REST API for a job board built with Node.js, Express, Prisma and PostgreSQL. Features: user auth (Employer/Applicant roles), data validation using Zod, Job CRUD, Applications with status tracking.

View on GitHub 🔗

Let's Connect

✉️ merlo.a.jonathan@gmail.com💼 LinkedIn Profile