Mauro Castillo

I'm Mauro.
A Software Engineer.

Portfolio

Check out my projects!

About Me

My Story

I started my professional journey as a customer service rep, where I found joy in connecting with people and solving their problems. This role ignited a spark, leading me to explore new opportunities in Sales Administration. There, I discovered a fascination with data - automating reports and mastering Excel functions quickly became a new passion.

As I advanced to Sales Administration Manager, I enjoyed optimizing workflows and driving efficiency, but my true calling was coding. Balancing spreadsheets and data with a growing love for programming, I realized my dream lay in Software Engineering.

After much deliberation, I took a leap of faith and enrolled in college while continuing to work. My hobbies of gardening, running, and playing board games with friends kept me grounded and energized throughout. Finally, I graduated with a Bachelor of Science in Software Engineering.

Today, my journey from customer service to software engineering reflects my commitment to personal and professional growth. My experience in sales, combined with a passion for technology and a healthy lifestyle, drive my innovative approach to creating meaningful solutions and fostering collaboration.

Looking forward, I am eager to further my expertise with a Master's degree in Software Engineering, aiming to become a leading engineer and make an even greater impact in the field.

Education & Resume

Education

Master of Business Administration

Western Governor's University

IT Management

Expected Graduation: Dec 2025

Bachelor of Science

Western Governor's University

Software Engineering

June 2022 - June 2024

Associate of Science

Dallas College

Computer Science

Jan 2020 - May 2022

Work Experience

Jan 2024 - Oct 2024
Android Developer Intern

Wazzle AI

Assisted in the Development and optimization of 10+ mobile app features in collaboration with cross-functional teams, resulting in a 20% increase in user satisfaction and app performance.

Integrated remote data using REST APIs and JSON, leveraging third-party libraries to ensure 99.9% uptime and seamless interactions with external data sources

Led full mobile development life cycle, from coding to testing and debugging, consistently reducing app crash rates by 15% through robust development practices and performance optimization

Jul 2024 - Sep 2024
Software Engineer Apprentice

HeadStarter

Built and deployed 5 AI projects using React, Next.js, Firebase, Clerk, and Vercel, incorporating best software engineering practices such as CI/CD for regression detection and iterative deployment

Collaborated with and led a team of 3 to build and deploy a SaaS product that generates flashcards based on a given topic using the OpenAI API

Developed a RAG-based project with a team of 3 using the OpenAI API and Pinecone that generates responses based on a provided dataset

Aug 2022 - Jan 2023
Sales Administration Manager

Pecan Grove Farms

Improved sales operations efficiency by 15% and reduced overhead by 10% through optimized logistics and procurement

Enhanced data accuracy by 20% with automated testing frameworks and data analytics, providing actionable insights into customer trends

Streamlined CRM usage, boosting team productivity by 25% by resolving NetSuite infrastructure issues

Orchestrated lead generation efforts at trade shows, driving a 20% increase in new business by cultivating high-value relationships and securing key partnerships

Jan 2017 - Aug 2022
Sales Admin /
Account Executive

Sanwa Technologies

Enhanced decision-making through the development of detailed ZOHO reports and Excel/SQL dashboards, driving 25% more accurate quarterly reviews for business strategy planning

Improved team coordination and vendor communication, resulting in a 10% reduction in shipment errors and a 5% increase in customer satisfaction

Acted as the liaison between multiple departments, boosting cross-department collaboration by 30%, which led to improved overall operational efficiency

Aug 2007 - Dec 2016
Sales Administrator

KidKraft, LLC

Managed and grew 3rd-tier accounts, increasing sales from $10,000 to over $50,000 annually, and successfully converting them into 2nd and 1st-tier accounts, contributing to a 40% sales growth

Developed automated Excel reporting systems to provide weekly inventory updates, which resulted in a 15% increase in customer satisfaction and a 10% improvement in retention rates

Oversaw 3PL warehouse inventory in Canada, maintaining a 99.9% on-time shipment rate, ensuring that SLAs were consistently met, and optimizing turnover with customized Excel reports

Skills & Certificates

Contact

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