Alex Giamas is a consultant and a hands-on technical architect at the Department for International Trade in the UK Government. His experience spans software architecture and development using NoSQL and big data technologies. For more than 15 years, he has contributed to Fortune 15 companies and has worked as a start-up CTO. He is the author of Mastering MongoDB 3.x, published by Packt Publishing, which is based on his use of MongoDB since 2009. Alex has worked with a wide array of NoSQL and big data technologies, building scalable and highly available distributed software systems in Python, Java, and Ruby. He is a MongoDB Certified Developer, a Cloudera Certified Developer for Apache Hadoop and Data Science Essentials.