Windu Fajar Arum is a Environmental Engineering at Green Welfare Indonesia. Colleagues describe them as "Windu is an amazing person. Windu as a Member of Sertifikasiku Ambassador Program, she did a lot of things in this program, not only about helping me to educate other people about professional certification, but also she is a quick learner and has a good performance to communicate something. and last thing, she has eager to learn something new."