Guillermo A Mendez

13100 Gridley St · Sylmar, CA 91342 · (661) 361-9369 ·

As an experienced educator with a passion for programming, I've honed my skills in online tutoring, substitute teaching, and instructional design. Proficient in Python, SQL, JavaScript, and tools like Visual Studio Code and GitHub, I'm dedicated to creating effective solutions that meet the needs of clients and deliver high-quality results.


Online Tutor

Mission Academy

Using a comprehensive approach to tutoring, I covered diverse math subjects from elementary to precalculus across various mediums and platforms. I tracked student progress in real-time using Excel and googlesheets, while providing technical support for online course setup. I also maintained a cloud-based archive of students' end-of-course work samples for easy access and analysis.

July 2022 - Present

Virtual Tutor


I offered versatile tutoring across all subject areas, using various mediums and platforms like online classes and one-on-one sessions based on students' class notes. Additionally, I conducted mini-lessons to enhance writing skills, study habits, and course preparation. By familiarizing myself with the available educational resources, I ensured optimal guidance. Using student notes and discussions, I determined the concepts that required teaching or re-teaching, providing a tailored approach to education.

September 2018 - February 2020

Area Teacher 1

Opportunities for Learning Public Charter Schools

I instructed multiple subjects using diverse teaching methods and materials, maintaining meticulous records for a 40+ student workload. I regularly met with students and parents to ensure progress and challenges were addressed, and also participated in IEP meetings. Additionally, I supported the HR/Admin department by obtaining important information and preparing files for audits. As a state testing coordinator, I ensured a smooth testing process. I also coached the girls' soccer team as part of my job, utilizing my free time to further support students.

March 2017 - February 2012

Substitute Teacher

Antelope Valley Unified High School District

As a substitute teacher, I supported schools during short-term teacher absences while providing students with constructive feedback on their work and study habits. I maintained classroom management by setting clear rules and limits.

September 2016 - July 2018


University of California Los Angeles

Bachelor of Arts
September 2010 - June 2013


Programming Languages & Tools
  • Visual Studio Code
  • Mobile-First, Responsive Design
  • Cross Browser Testing & Debugging
  • Cross Functional Teams
  • Agile Development & Scrum


With over 20 years as a musician, my love for music has been a constant companion, fueling my creativity and passion. I find solace and inspiration in capturing fleeting moments through photography, freezing emotions and memories in time. Exploring the great outdoors on my bicycle and through running brings me joy and a sense of freedom, connecting me with nature's beauty.

Additionally, I thrive on delving into the exciting world of Internet of Things (IoT), experimenting with innovative technologies that push the boundaries of what's possible.


  • Google Analytics Certified Developer
  • Meta Front-end Development Professional Certificate
  • AWS Cloud Technical Essentials