Looking for a job

João Santucci

@joosantucci

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I stabilize and modernize high-traffic PHP and React systems, eliminating technical debt and production failures.

Brazil

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What I'm looking for

I'm looking to take ownership of complex production systems where I can modernize legacy code, diagnose critical issues, improve reliability and performance, and collaborate remotely on practical, high-impact software.

I've maintained and stabilized high-concurrency investment platforms at Migracloud, serving 40k+ active users and 50k+ daily transactions. I refactored core PHP/Laravel modules, improved error logging, and introduced fail-safe mechanisms to protect uptime during peak traffic.

Across legacy PHP, Laravel, Symfony, Zend, WordPress, React, and TypeScript applications, I diagnose critical bugs, reduce technical debt, and improve production stability without regressions. My database and application optimizations have increased performance by 20–50% and reduced error rates by 30%.

At Envolve and Koder, I built WordPress themes and plugins, repaired enterprise workflows, delivered React UI components under tight deadlines, and created PHP import processes that safely handled 100k+ CSV records. I've also built real-time river monitoring, medical results, document-processing, and task-management systems.

I enjoy taking ownership of complex systems that need practical fixes, clear architecture, and reliable delivery. I work effectively in remote teams and bring advanced English alongside native Portuguese communication.

Experience

Work history, roles, and key accomplishments

Fullstack Software Engineer

Migracloud

Mar 2021 - Mar 2026 (5 years)

Maintained and stabilized a high-concurrency investment members platform serving 40k+ active users; refactored core PHP/Laravel modules and implemented robust error logging. Audited and refactored a legacy compliance platform, boosting performance by 50% and reducing error rates by 30%.

PHP Laravel WordPress MySQL PostgreSQL Refactoring Performance Optimization Logging REST APIs

Fullstack Software Engineer

Envolve

Jun 2020 - Mar 2021 (9 months)

Refactored and maintained custom PHP/JavaScript calculation engines, reducing material estimation errors by 20%. Architected lightweight WordPress themes using OOP PHP and built a river monitoring system with PHP and Symfony.

PHP WordPress Symfony JavaScript REST APIs MySQL

Fullstack Software Engineer

Koder

Oct 2018 - Apr 2020 (1 year 6 months)

Delivered critical UI components for a remote medical assistance project using React.js and integrated OAuth. Debugged and refactored an enterprise task management platform in PHP/Zend, and built custom data import scripts for WordPress applications.

PHP WordPress React Zend JavaScript MySQL OAuth