Mijenko is an education professional with extensive experience in teaching, research, and international cooperation. His work spans human rights and citizenship education, Holocaust and genocide education, history and cultural heritage, and media and digital literacy, including the critical use of AI in learning contexts. He recently took on a new role focused on implementing international projects in adult education, aiming to empower learners and educators beyond traditional classrooms. His current work emphasizes innovative learning methods, inclusive community programs, and lifelong learning initiatives, fostering meaningful impact and growth for adult learners worldwide.