Freelancer profile translated to English.

Description

Full Stack Developer with over 6 years of professional experience and over 10 years of self-taught development, specializing in high-scale web and mobile applications. Expert in Angular (AngularJS to v21), React, Ionic, and Node.js, with a strong command of MySQL and relational database design.

Transforming legacy systems into scalable and maintainable platforms — technological migrations, stack modernization, offline-first architectures, and CI/CD pipeline automation. Capable of assuming technical leadership responsibilities when the project requires it, without losing focus on hands-on execution.

Industry field of expertise

Languages

Spanish
Native or bilingual
Portuguese
Conversational
English
Conversational

Workplace preferences

Can work on-site

Rincón de la Victoria (up to 50km)

WS Solutions
Full Stack Developer / Tech Lead
SOFTWARE PUBLISHING
November 2024 - February 2026 (1 year and 3 months)
Debugging & Incident Resolution in Production
• ● Parallel resolution of critical production incidents for 40+ simultaneous clients, maintaining sustained availability >95%.
• ● Diagnosis and correction of errors in complex environments: web apps, hybrid mobile apps (Android/iOS), and REST APIs.
• ● Reduction of recurring incidents by 50% through systematic code review and delivery process improvement.
• ● Incident management coordinating with DevOps, QA, and Support, focusing on rapid resolution and root cause documentation.
• ● Maintained and evolved 2 web applications, 5 Ionic mobile apps, and 5 APIs for 40 clients and thousands of users with availability >95%.
• ● Led the complete migration from Ionic 3 to Ionic 8: analysis of breaking changes, refactoring of native plugins, and validation on Android/iOS.
• ● Designed and implemented CI/CD pipelines, reducing deployment time from 1 hour to 5 minutes and increasing release frequency to 4–6/month.
• ● Conducted systematic code reviews that reduced production incidents by 50%.
• ● Coordinated with DevOps, QA, and Support to accelerate the resolution of critical incidents in production applications.
• ● Migration from Azure Blob Storage to Cloudflare R2 with no impact on production, reducing traffic costs by 50%. Stack: AngularJS
◦ · Angular8
◦ · Angular15
◦ · Ionic
◦ · React
◦ · NodeJS
◦ · PHP
◦ · Docker
◦ · Azure
◦ · Cloudflare R2
◦ · Firebase
◦ · Android
◦ · iOS
◦ · CI/CD
Angular React.js Ionic PHP Node.js
WS Solutions
Full Stack Developer
May 2021 - November 2024 (3 years and 6 months)
CESLA - Complexo de Esportes e Lazer, Santa Maria, RS, Brazil
• ● Maintained and evolved legacy Angular/ReactJS applications with 8–10 features per sprint and incident resolution for 40+ clients.
• ● Refactored and modularized legacy systems, achieving a 60% reduction in codebase size.
• ● Participated in technical architecture decisions for legacy and new products, prioritizing scalability and maintainability.
• ● Maintained 5 hybrid Ionic mobile applications (Android/iOS): native plugin integration, cross-platform debugging, environment consistency.
• ● Implemented offline-first architecture with data synchronization to ensure continuous operation without connectivity.
• ● Analysis and debugging of legacy code without documentation: reconstruction of business logic and system stabilization. Stack: AngularJS
◦ · Angular8
◦ · Angular15
◦ · Ionic
◦ · React
◦ · NodeJS
◦ · PHP
◦ · Azure Blob Storage
◦ · Android
◦ · iOS
◦ · REST APIs
Angular Ionic PHP React.js Node.js
Apex America
Front-End Developer
January 2020 - March 2021 (1 year and 2 months)
• ● Developed and maintained dynamic interfaces with AngularJS in high-volume applications, ensuring consistent UX and cross-browser compatibility.
• ● Implemented client-configurable conversational flows in a multi-tenant architecture, enabling quick customizations for multiple accounts.
• ● Participated in code reviews and promoted front-end best practices, improving codebase quality. Stack: AngularJS
◦ · JavaScript
◦ · HTML5
◦ · CSS3
◦ · MongoDB
◦ · AWS
◦ · REST APIs
Angular HTML5 CSS3 Web Development JavaScript, HTML5, CSS3, PHP, MySQL