Sonia Valeja: Sonia is an Indian DBA who started working in PostgreSQL in the year 2012. Since she has performed multiple migrations from Oracle to PostgreSQL, she learnt Oracle while working with PostgreSQL. She is a SME for beginner-level course on Open Source Database-PostgreSQL in one of her company. She has conducted multiple trainings on PostgreSQL for freshers as well as experienced professionals. Also, she has been an active participant at pgConf and has given lightening talk. She has worked extensively in Taxation as well as manufacturing based projects for Indian as well as African sub-continent.
David Gonzalez: David is a Mexican DBA with 10+ years of hands-on experience with different RDBMS such as PostgreSQL, Oracle, and MySQL. He is good at PostgreSQL Administration and Development and has written multiple blogs on PostgreSQL. He has participated in various projects for banking, IT, and Software companies.