"I am an Agroecological engineer."
This is really cool and important nowadays.
We have here (on Steem) some scientific communities.
So, as a person who deals with science you might be interested in https://steemit.com/@stemq
(https://www.stemq.io/)
and
https://steemit.com/@steemstem
(https://www.steemstem.io)
And this is a good resource to get some info for newcomers - http://steem.how/