Developer at Smart Data Automation
Experience

Developer at Smart Data Automation

I built custom web solutions using PHP CodeIgniter, JavaScript, and development best practices.

PHPCodeIgniterJavaScriptMySQLGitHub

Walter Giovanny Cuadros Rincon

Cloud Solutions Architect

Role and Context

From August 2019 to April 2021, I worked as a Fullstack Developer at Smart Data Automation, contributing to the development of custom software solutions for various clients.

The main focus of my work was building robust, maintainable, and business-oriented web applications using PHP (CodeIgniter) on the backend and JavaScript on the frontend, applying development best practices and version control.


Key Responsibilities

  • Custom software development using PHP with CodeIgniter, from requirement analysis to production delivery.
  • Implementation of backend modules for content management, user administration, scheduling, and data handling.
  • Development of dynamic interfaces using Vanilla JavaScript, Ajax, and jQuery, prioritizing usability and fast system response.
  • Building solutions such as:
    • Custom Content Management Systems (CMS).
    • Medical appointment management systems, including scheduling, availability, and reminders.
    • Conversion‑focused landing pages optimized for marketing campaigns.
    • Technical SEO implementations and adjustments for websites and landing pages.
  • Database modeling and management with MySQL, including table design, optimized queries, and data maintenance.
  • Continuous use of version control (e.g., Git) to ensure traceability and structured collaboration.

Achievements and Results

  • Contributed to the development and improvement of multiple production applications aligned with specific client needs.
  • Helped build content administration modules that enabled non‑technical users to manage information efficiently.
  • Supported the development of medical appointment systems that improved service organization and reduced friction in scheduling.
  • Implemented frontend improvements with JavaScript, Ajax, and jQuery, resulting in smoother interfaces and better user experience.
  • Ensured code remained versioned, structured, and maintainable, avoiding low‑quality shortcuts and prioritizing long‑term stability.

Technology Stack

Backend

  • PHP
  • CodeIgniter

Frontend

  • Vanilla JavaScript
  • jQuery
  • Ajax
  • HTML5, CSS3 (view integration)

Database

  • MySQL

Development Practices

  • Code version control (e.g., Git)
  • Clear separation between frontend and backend
  • Focus on maintainable and reusable code

Collaboration and Work Style

During my time at Smart Data Automation, I worked closely with other developers and the team responsible for defining requirements and priorities.

I focused on:

  • Maintaining clear communication about scope and progress.
  • Proposing technical improvements when opportunities to simplify or strengthen a solution arose.
  • Aligning deliveries with agreed timelines while prioritizing product quality.

Learnings and Growth

This experience strengthened my foundation as a fullstack developer, especially in PHP‑based MVC frameworks and JavaScript‑driven frontend development.

Key learnings include:

  • Designing MySQL databases with scalability and maintainability in mind.
  • The value of version control for collaborative work and change management.
  • Building fast, simple interfaces for end‑users, particularly in high‑frequency systems like medical scheduling tools.
  • Reinforcing a continuous improvement mindset, upholding good practices, and avoiding shortcuts that compromise quality.

This stage became an important foundation for evolving toward modern architectures, better engineering practices, and a more holistic view of the software lifecycle.