Juan Cadima

Senior Software Engineer | Web Applications, APIs & Secure Systems

 Work Experience

March 2024 - Present
U2C

Senior Software Engineer | Web Applications, APIs & Secure Systems

  • Led production incident response across Laravel applications, identifying and remediating cryptomining malware, web shells, and SEO spam injections. Developed automated malware scanning scripts, hardened nginx configurations, and enforced secure file ownership and permission models to prevent recurrence.
  • Designed and implemented scalable multi-tenant SaaS architectures using Laravel, focusing on domain-driven design, secure authentication flows, JWT lifecycle management, encrypted session handling, and centralized audit logging to support long-term maintainability and operational transparency.
  • Developed automated testing and delivery workflows for containerized applications using Docker and CI/CD pipelines, improving release reliability, reducing manual deployment effort, and ensuring consistent behavior across all environments.
  • Built reusable platform components and shared services including authentication modules, external fraud prevention integrations, and extensible CMS infrastructure deployed across 10+ production client implementations, accelerating delivery while maintaining strong security and quality standards.
  • Delivered internal and customer-facing administrative platforms. These included Firebase-integrated mobile user management dashboards and operational tooling for multi-tenant SaaS systems, supporting business operations, user lifecycle management, and data visibility.
Oct 2022 - February 2024
Contractor

Full Stack Developer

  • Delivered a fully multilingual custom CMS using Laravel and Livewire, improving content management efficiency and enhancing the user experience for international audiences—reducing admin time by over 30%.
  • Streamlined financial operations by customizing and optimizing invoice templates, enabling faster invoicing cycles and reducing client-side manual adjustments and errors.
  • Increased conversion rates and reduced cart abandonment by maintaining and optimizing multiple e-commerce websites, addressing performance bottlenecks and enhancing mobile responsiveness.
  • Boosted platform stability by diagnosing and resolving high-priority bugs in a ticketing system, reducing support tickets and ensuring uninterrupted service for end-users.
Oct 2021 - Oct 2022
Ideal Image

Senior Backend Engineer

  • Improved system scalability and deployment efficiency by architecting RESTful APIs and Dockerized background workers within a microservices environment—reducing deployment errors and boosting development-to-production consistency.
  • Accelerated product delivery by integrating React and Laravel into a cohesive stack, enabling a full-featured web application to launch ahead of schedule and under budget, while increasing team development velocity.
  • Engineered and maintained robust APIs with Laravel, ensuring seamless integration with third-party services and internal tools—supporting thousands of transactions daily with high reliability.
  • Significantly enhanced database performance by optimizing SQL queries and restructuring schema, resulting in faster data access and more responsive API endpoints across the application.
Aug 2020 - Oct 2021
NIA Auto Design

Full Stack Developer/Admin

  • Improved the maintainability and scalability of a Laravel web application by refactoring the codebase and implementing modern software design patterns, resulting in increased efficiency and reduced technical debt
  • Automated and optimized business logic for core E-commerce operations in areas such as customer operations, producing invoices, checking and modifying store inventory
  • Managed E-commerce projects, implementing payment gateways and shopping cart functionality
  • Server automation/backups with Python/Bash automation scripts, applied security patches on a regular basis
  • Deployed web applications on Linux servers, ensuring optimal performance and security
June 2018 - July 2020
C&I Studios

Full Stack Developer

  • Designed and developed custom web applications using PHP/Laravel/Wordpress, MySQL, HTML, CSS, and JavaScript, ensuring high performance and scalability
  • Development of custom CMS Laravel applications for internal admin store operations
  • Automated an event registering system by rewriting the application with modern full-stack features and reduced the number of manual data input entries and processing that needed to be done under the old system
  • Website and database optimization techniques which improved load times for data intensive pages and API endpoints
  • Built internal registration software, automated registration processes and created administrative tools
Feb 2015 - June 2018
Pop Creative Group

Web Developer

  • Developed several custom full stack web applications using Wordpress, Laravel, and integrating with various API services such as YouTube API, Stripe, Authorize.net
  • Refactored code, identified and replaced legacy code with modern Object Oriented techniques
  • Managed project timelines and budgets, collaborating with stakeholders to ensure timely delivery of high-quality web applications that meet client requirements and exceed expectations
  • Custom Magento web development, migration to Magento v2
  • Developed and maintained documentation for existing and new web applications, improving code base readability and facilitating team collaboration
January 2012 - Feb 2015
Cause Populi

Web Developer

  • Developed and maintained several E-commerce websites based on WooCommerce and Magento
  • Debugged and resolved complex technical issues in web applications, ensuring high up time
  • Ticket support for client requests with server migrations
  • Management of websites, DNS configuration and troubleshooting
  • Worked with legacy PHP code bases to update and maintain existing web applications

 Education

  • Florida International University
    2006 - 2011

 Languages

  • English
  • Spanish