Daniel Durante is a consultant and strategist for Fortune 100 companies, and has been a full-stack developer since the age of 12. He is also an author and technical reviewer for Packt Publishing. His code exists in infrastructures such as Hubcash, Stripe, and Walmart. He has worked on text-based browser games that have surpassed 1,000,000 active players. Further he has created bin packing software for CNC machines, worked with embedded programming with cortex-m and PIC circuits, produced high-frequency trading applications, and helped contribute to and maintain one of the oldest object-relational mappers (ORMs) of Node.js (SequelizeJS).

Marcelo Diaz is a software engineer with more than 15 years of experience with a special focus on PostgreSQL. He is passionate about open source and has promoted its application in critical and high-demand environments where
he has worked as a software developer and consultant on private and public companies. He currently works very happily at Cybertec and as a technical reviewer for Packt Publishing.

He enjoys spending his leisure time with his daughter, Malvina, and his wife, Romina. He also likes playing football.