Mario Castillo
Junior Software Engineer | Business Intelligence | Web Developer | Data Analytics | Digital Marketing and Content Creator
About Me
Hi, I’m Mario Castillo, a software engineer specialized in technology solutions, data analysis, business intelligence and web development.This portfolio showcases a selection of my projects, skills, and experiences that reflect my professional, creative, and results-driven approach.
🛠️ Skills Overview
I bring a versatile skill set that bridges software engineering, data analytics, and digital strategy. With hands-on experience in building scalable web applications, managing SEO-driven websites, and leading digital transformation projects, I combine technical knowledge with strategic thinking.Technical Skills:Programming: JavaScript, PHP, PythonFrameworks: Laravel, React, WordPress, WooCommerceData Tools: Excel (advanced, with macros), Power BI, Tableau, Google Data StudioWeb & SEO: Elementor, HTML/CSS, Google Search Console, SEO optimizationDatabases & Cloud: MySQL, AWS (Certified Cloud Practitioner)Soft Skills:- Project management and cross-functional collaboration- Problem-solving and process improvement- Clear communication with technical and non-technical stakeholders- Adaptability across fast-paced environmentsI’m passionate about turning ideas into actionable solutions and delivering value through technology, design, and data.
🎓 Certifications
I’ve enhanced my technical and strategic expertise through a combination of formal education and industry-recognized certifications:- Master’s in Business Intelligence – focused on data-driven decision making, business analytics, data visualization, and applied data strategy for organizations.- AWS Certified Cloud Practitioner – foundational understanding of cloud services, infrastructure, and security within Amazon Web Services.- Microsoft Excel (Advanced Certification) – full mastery from basic to advanced features, including data modeling, macros, pivot tables, and automation.- Microsoft Outlook Productivity Certificate – certified in task planning, scheduling, and effective communication in business environments.- Digital Marketing & SEO Courses (Google, HubSpot, others) – skills in SEO optimization, keyword research, Google Search Console, and online growth strategy.These qualifications reinforce my ability to combine data, technology, and business intelligence to design scalable, real-world solutions.
💼 Projects
A selection of real-world projects that reflect my ability to build, analyze, and optimize digital and data-driven solutions:
Latin America Steel Company
Developed and implemented the full digital presence for Lasco S.A., a Panamanian company specialized in industrial storage systems and metal structures.Designed and structured a modern, responsive corporate website focused on industrial clients.Integrated SEO best practices and optimized content to improve search visibility and lead generation.Created technical content, product galleries, and project pages to showcase large-scale industrial solutions.Implemented Google Search Console and performance tracking tools.Supported social media and video marketing efforts to position the brand both locally and internationally.🛠️ Tools used: WordPress, Elementor, Yoast SEO, Google Search Console, Canva, Meta Business Suite
Climatización Servimed
Led the development of a complete e-commerce platform for Climatización Servimed, a Chilean company specializing in air conditioning and climate control solutions.Built a responsive and user-friendly online store using WordPress and WooCommerce.Configured dynamic product filters, custom regional pricing, and tax rules tailored to Chilean logistics.Integrated Mercado Pago for seamless and secure online payments.Applied SEO optimizations to improve product visibility and search rankings.Developed backend workflows for order processing, shipping regions, and automated notifications.🛠️ Tools used: WordPress, WooCommerce, Elementor, Mercado Pago API, Google Search Console
ABAM Abogados
Designed and developed the official website for ABAM Abogados, a Spanish law firm specializing in civil, labor, and commercial law.Built a modern, responsive layout using Divi Builder, aligned with the firm’s professional image.Structured content to highlight legal services, practice areas, and team members.Integrated contact forms, WhatsApp communication, and Google Maps for improved client interaction.Ensured usability and accessibility across all devices.Please note that the current version of the website may have undergone changes not made by me or outside of my control.🛠️ Tools used: WordPress, Divi Builder, Google Maps API, WhatsApp Plugin
Companies I worked for:
Heart Coded Madrid
- Developed Laravel APIs to improve data processing and integration across web-based applications.- Optimized backend codebase, achieving a 20% reduction in system loading times and response latency.- Managed SQL database tasks to ensure structure efficiency, performance, and long-term system stability.- Participated in the design and deployment of AI-based modules integrated into client digital environments.
The Bertrandt Group
- Designed and implemented control systems for energy consumption using Excel, Python, and Arduino tools.- Developed C++ applications focused on technical operations and internal process automation tasks.- Performed data analysis to detect usage patterns and propose targeted operational improvements.- Used Grafana dashboards to monitor real-time energy flow across servers and support engineering teams.
- Communication as the main key to work development.