Lecturer and Head of Thesis Guidance Commission (KOMBI) at Undergraduate Program Mathematics Education, University of Jember, Member of Quality Assurance Centre (GPM) and Head of Education and Coordination Division UPTTIK University of Jember.
Primary Education Tutor at Indonesia Open University (UT) (2016 – Present), Mathematics Tutor at LBB Forum Guru Malang (2012 – 2014), and at LBB Galileo Jember (2009 – 2012).
Member of Manabel (Mathematics Analysis and Learning) and LS-Imel (Lesson Study in Mathematics Learning) Research Group.
More than 50 times as a Keynote Speaker at seminars and workshops on mathematics, educational research and technology-assisted learning
Journal reviewer at Axiom UIN SU (SINTA-3), Vygotsky UNISLA (SINTA-3), and Soulmath UNITOMO (SINTA-4)
Founder of Guru Inovatif Indonesia and Fotografi Ponsel Indonesia (more than 250.000 members), and Content Creator on Youtube Channel “Randipopo” (more than 11.000 subscribers)