Janzen is a higher education instructor specializing in Mathematics Education and Professional Education courses. He teaches Logic and Set Theory, Statistics and Probability, General Education subjects, and Practical Research. He previously served as a College Instructor at Ramon Magsaysay Memorial Colleges and as a Substitute Teacher in the Department of Education, bringing with him a diverse teaching background across secondary and tertiary levels. He earned his Master of Arts in Teaching major in Mathematics from Sultan Kudarat State University. His master’s thesis reflects his strong research orientation toward improving statistical literacy, strengthening conceptual mastery, and designing evidence-based enhancement programs for teacher education students. His academic and research interests include mathematics pedagogy, statistics education, technology integration in learning, student motivation, and quantitative research in education. Through his teaching and scholarly engagement, he advocates for data-driven instruction, critical thinking development, and continuous professional growth among future educators.