After 1994, I was doing the waterfall type development. I was "UNIX-C" programmer who uses a feedback loop.
In 2000, I met up with Agile Manifesto.
And I found the scrum immediately.
After I found the scrum, argument of the scrum participated in a community, and followed.
And I just became the scrum coach who helps a developer.
CSP/CSM/CSPO/Certified LeSS Practitioner
Community "the Sukusuku-scrum" member.
-See more below: https://www.scrumalliance.org/community/profile/dwatanabe