Hi how are you, I hope you are well, although I do not have certifications in postgresq I have a lot of experience in database configuration development, I have a lot of experience in topics such as database development, role management, users, groups, indexes, types of data, procedures stored in the database, triggers, complex queries involving several tables, views, materialized views, optimization of queries, a series of topics that could be developed according to your needs. I am available in any case of any question.