User cannot create schema in PostgresSQL database

I'm trying to setup a "deployment" user which can create and alter tables on an existing database in addition to selecting, updating, inserting and deleting records. Here is what I've tried so far: -- Create deployment user CREATE ROLE deploy_user WITH LOGIN PASSWORD 'deploy_user'; -- Grant connect and create GRANT CONNECT, CREATE ON DATABASE my_database TO deploy_user; -- Grant create schema privilege ALTER ROLE deploy_user CREATEDB; -- Change db owner to deployment user ALTER DATABASE my_database OWNER TO deploy_user; -- Grant CRUD operations ALTER DEFAULT PRIVILEGES IN SCHEMA public GRANT INSERT, UPDATE, DELETE ON TABLES TO deploy_user; None of the above grants work. What I end up with is a user which can login but that's it. I cannot select, insert, update, delete on any tables. I cannot make changes to the schema either. Can anybody help out?