Senior Full-Stack Developer | DevSecOps-Oriented | Security-Focused Web Applications

Juan Cadima

Senior Full-Stack Developer with 10+ years of experience building secure, high-performance custom web applications. Specializing in backend and frontend development with a strong emphasis on integrating security best practices throughout the software lifecycle. Proven track record in developing custom Content Management Systems (CMS), Customer Relationship Management (CRM) systems, and e-commerce platforms with an eye toward performance, scalability, and resilience. Skilled in Linux server management, cloud environments, and containerized deployments with Docker, applying DevSecOps principles to streamline delivery while enhancing application and infrastructure security. Experienced collaborating with businesses of all sizes—from small agencies to mid-sized enterprises—to solve complex challenges and deliver innovative, security-minded digital solutions.

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Portfolio Highlights

My background in developing custom CMS and CRM systems has honed my ability to solve complex problems with clean, efficient code, always focusing on performance and maintainability.

PHP Micro Framework

A simple and lightweight PHP Framework for personal and learning purposes

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WireCMS

A custom Laravel Content Management System, fully reactive backend functionality with Livewire

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IMGrly

Generate placeholder images instantly and more. Built for developers, designers, and content creators.

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No Site Radar

Discover untapped opportunities in your area. Generate instant lead lists of local businesses that need your web services.

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U2C Mobile

Complete Content Management System with API integrations

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U2C Mobile Lifeline

Complete Content Management System with API integrations

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Areas of Proficiency

With extensive experience in backend development, I specialize in designing and building secure, scalable, and high-performance web applications tailored to diverse business needs. Proficient in PHP, Laravel, and Livewire, I have developed custom CMS and CRM solutions with hardened authentication, secure API integrations, and compliance-ready logging. Skilled in API design, database architecture, and containerized deployments using Docker, I apply DevSecOps principles to ensure consistency, resilience, and security across development, staging, and production environments

Secure Web Application Development

Specializing in building dynamic, scalable, and security-hardened web applications, including custom CMS, CRM systems, e-commerce platforms, and seamless API integrations. With expertise in both backend and frontend development, I deliver high-performance solutions that prioritize data protection, performance, and user trust. Using modern frameworks and security best practices, I ensure applications are not only fast and responsive but also resilient against common vulnerabilities such as SQL injection, XSS, and CSRF.

Database Architecture & Data Security

Designing and developing efficient, scalable, and security-focused database solutions for complex applications. Expertise includes schema design, query optimization, role-based access control (RBAC), and encryption strategies to protect sensitive data. I build data architectures that meet current operational needs while supporting future growth, ensuring compliance with data security standards and optimizing for both performance and resilience.

Server & Infrastructure Security Management

Managing and optimizing server infrastructure across VPS, cloud, and containerized environments with a DevSecOps approach. Skilled in Docker containerization, Nginx configurations, and secure deployment pipelines. Experienced in SSL/TLS implementation, intrusion prevention measures, automated backups, and system hardening to safeguard uptime and data integrity. I deliver infrastructure that is not only scalable and cost-effective, but also secure by design.

Secure API Design & Integration

Designing and implementing secure, scalable APIs that enable reliable communication between systems and applications. Specializing in RESTful architecture, third-party API integrations (e.g., payment gateways, analytics, social media APIs), and secure authentication protocols such as OAuth2 and JWT. Focused on delivering APIs that follow OWASP API Security Top 10 best practices, ensuring efficient data exchange without compromising security.

Secure, Scalable Web Applications and SaaS Solutions That Deliver Real Results

I design and build custom web applications and SaaS platforms that balance innovation with rock-solid security. From concept to deployment, I focus on performance, scalability, and safeguarding your business in today’s evolving digital landscape.

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