Full-Stack Developer · Digital Nomad

Building things
that work
beautifully.

I'm Juan Manuel — a software engineer with 10+ years of experience crafting platforms across fintech, pharma, real estate, and beyond. My guiding principle: it should work flawlessly, and it should do so with exceptional quality.

View Portfolio ↗ About Me
10+
Years experience
18+
Projects delivered
12+
Clients worldwide
Juan Manuel Zaragoza
Buenos Aires · Argentina
LinkedIn GitHub Upwork
PHP· Laravel· JavaScript· TypeScript· React· Next.js· Node.js· NestJS· Python· Angular· PostgreSQL· Docker· GCP· AWS· Azure· Superset· Firebase· BigQuery· PHP· Laravel· JavaScript· TypeScript· React· Next.js· Node.js· NestJS· Python· Angular· PostgreSQL· Docker· GCP· AWS· Azure· Superset· Firebase· BigQuery·
Selected Work

Recent Projects

View all 18 projects →
Client Words

What clients say

"Juan Manuel helped us overhaul our entire platform — from design to security to subscriptions. He not only resolved the existing issues but positioned the platform for future growth. We now have full control of a system that genuinely works."

Julio César Pérez
Project Leader · Listing Los Cabos, Mexico City
All Work

Portfolio

18 projects across ticketing, real estate, pharma, government, fintech, and more. Full-stack development, QA automation, data platforms, and chatbots.

Juan Manuel Zaragoza
10 years of
experience
About Me

I am Juan Manuel

A seasoned Computer Engineer with a decade of hands-on experience in the dynamic realm of technology. My journey in the world of IT began as a Quality Assurance specialist, where I honed my attention to detail and commitment to excellence.

Over time, I became proficient in a diverse array of programming languages and technologies. Beyond my passion for technology, I'm an avid traveler, sports enthusiast — marathon runner, swimmer — and a devoted music aficionado. I fully embrace remote work as the ideal conduit for harmonizing personal aspirations with professional endeavors.

PHP / Symfony Laravel JavaScript TypeScript React Next.js Node.js NestJS Python Angular Java Spring PostgreSQL Docker GCP AWS Azure Superset Firebase BigQuery Cypress Pest / PHPUnit
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Experience

Career Timeline

2024 – Present
Senior Full-Stack Developer
Datakimia LLC & Vivetix (Tonic Time S.L.)
Next.js + NestJS data platform with Superset embedded analytics. QA automation strategy with Cypress and Pest for a ticketing platform.
2022 – 2024
Freelance Software Developer
Calcio (own brand) · LATAM & Spain
Multiple client projects: CRM development (Laravel), real estate platforms (React + Firebase), WordPress for SMEs, chatbot automation, data pipelines.
2020 – 2022
Full-Stack Developer / Tech Lead
IVEE · Atacana Group · Indigo
React platforms with Firebase and GCP. Pharmaceutical reporting with .NET and Azure. AWS Lambda architecture for a lifestyle startup.
2017 – 2020
Technical Lead / Full-Stack Developer
Buenos Aires City Government
Technical Director for two public-sector platforms: employee performance evaluation and medical units attention system. Angular + Java + PostgreSQL/MariaDB.
2015 – 2017
QA Engineer → Software Developer
Early Career
Started as Quality Assurance specialist, transitioning into full-stack development. Built foundations in test methodology, attention to detail, and software quality.
Get in Touch

Let's work
together.

Whether you need a full-stack platform built from scratch, an existing system improved, QA automation, or a data visualization solution — I'm here to help. Let's connect and build something great.

✉
📍
Location
Buenos Aires, Argentina · Remote worldwide
📞
Phone / WhatsApp
(+54) 911 2651 9880
FAQ
What types of projects do you work on?
Web development, mobile applications, custom software, QA automation, data platforms, and cloud computing solutions. I work across the full stack and enjoy projects with real technical challenges.
How do you approach a new project?
I start by understanding your goals and requirements, then create a plan and timeline. Throughout the project I maintain open communication, provide regular updates, and adapt to evolving needs.
What technologies do you specialize in?
PHP/Laravel, JavaScript/TypeScript, React/Next.js, Node.js/NestJS, Python, and cloud platforms (GCP, AWS, Azure). Also experienced with QA tooling like Cypress, Pest, and PHPUnit.
Do you work remotely?
Yes — fully remote. I've worked with clients across Latin America, Spain, the US, and Mexico. I adapt my schedule to overlap with client time zones.
Do you offer ongoing support after project completion?
Yes. I offer ongoing support and maintenance to ensure the continued success of your project. Many of my client relationships are long-term engagements.
How can I request a quote?
Send me an email at juanmanuelzar@gmail.com with details about your project — scope, timeline, and any technical requirements. I'll get back to you promptly.
Ready to start?

Drop me a line and let's discuss how I can help your project.

Send an Email ✉