Seidlitz Education Logo


Our Team

The people behind The Visual Non-Glossary.

Stephen Fleenor headshot
Spanish Science Social Studies Math

Stephen Fleenor, PhD

Chief Digital Officer

Stephen leads digital content development for Seidlitz Education. He has served as an educational consultant, teacher, and instructional coach, and holds a PhD in Developmental Biology from Oxford University.

Content Developers
Isaac Márquez headshot
Spanish Science Social Studies
Isaac Márquez
Content Developer/Consultant

Isaac develops Social Studies and Science visuals and provides training for the VNG. He is also an educational consultant specializing in science for emergent bilingual students and technology integration.

Julie Gibson headshot
Spanish Science Social Studies
Julie Gibson
Content Developer/Consultant

Julie develops Social Studies and Science visuals and trains educators on the 5E model of instruction. She has served as a bilingual science facilitator and dual-language teacher.

Areli Amador headshot
Spanish Math Social Studies
Areli Amador
Content Developer

Areli develops Math and Social Studies visuals and transadapts them into Spanish. She previously taught 5th grade dual-language in San Antonio, TX.

Leon MacCormack headshot
Spanish Social Studies
Leon MacCormack
Content Developer

Leon creates secondary Social Studies visuals and previously taught high school Social Studies in San Antonio. He holds a BS in Anthropology.

Grecia Martinez headshot
Spanish Social Studies
Grecia Martinez
Content Developer

Grecia is a high school ESL teacher creating Social Studies visuals. She studied International Relations at UT Austin and is pursuing her MA in Educational Policy Studies.

Fatimah Aboueisha headshot
Arabic Fluent Science
Fatimah Aboueisha
Content Developer

Fatimah builds language-rich resources for English learners. She has served as Associate Dean, Department Chair, and taught high school science for six years.

Web Developers
Alejandro Pérez González headshot
Spanish Web Developer
Alejandro Pérez González
Lead Web Developer

Alejandro leads innovation on the VNG platform and automation systems. He holds a BS in Computer Science and creates tools like pre-made lesson plans.

Hector Mestre Columbié headshot
Spanish Web Developer
Hector Mestre Columbié
Web Developer

Héctor develops features for the VNG and other digital platforms. With a background in Cybersecurity, he focuses on UX, functionality, and secure design.

Jose Jobins headshot
Malayalam Web Developer
Jose Jobins
Web Developer

Jose builds new features and apps for the VNG, combining creativity and technical skill. He is a full-stack developer currently pursuing his BS in Computer Science.