Regina Obe is a web application and database expert with extensive experience in PostgreSQL and SQL Server data-driven web applications. She has over 20 years professional experience in various programming languages and database systems. She is an expert on PostGIS spatial database engine and is a member of the PostGIS project steering committee, the PostGIS core development team, pgRouting development team, and GEOS development and project steering committee. Regina focuses on project cost estimation, high-level programming and troubleshooting, providing technical guidance to programming staff, and one-on-one mentoring to clients in various programming and database disciplines. Regina holds a BS degree in mechanical engineering from the Massachusetts Institute of Technology with a concentration in Bioelectronics and control systems. She is a co-author of the books PostGIS in Action (1st and 2nd editions), published by Manning Publications and PostgreSQL: Up and Running, 2nd Edition (and 1st edition) published by O'Reilly Media. She is currently working on 2 new books, PostgreSQL: Up and Running, 3rd Edition and pgRouting: A Practical Guide (publisher, LocatePress).
Leo Hsu is a master database architect with extensive experience building business intelligence and automation applications for flight management, labor unions, and eCommerce sites. He has over 20 years professional experience working for non-profits and Dot coms developing automated pricing and process applications and devising workflow strategies. Leo focuses on database design, application architecture, and overall project management. He is the resident SQL expert. Leo holds an MS degree in engineering of economic systems from Stanford University. He also holds dual BS degrees in mechanical engineering and economics from the Massachusetts Institute of Technology with a minor in Finance. He is a co-author PostGIS in Action (1st and 2nd editions), published by Manning Publications and PostgreSQL: Up and Running 2nd Edition (and 1st edition ) published by O'Reilly Media. He is co-authoring with Regina two new upcoming books, PostgreSQL: Up and Running, 3rd Edition and pgRouting: A Practical Guide (publisher, LocatePress).
Caitlin is a senior web developer. She holds a BS degree in Physics and Astronomy from Boston University. She specializes in ASP.NET, PHP, and HTML5 development. She is the resident expert on integrating applications with web services such as Facebook, Twitter, Google Apis, and FourSquare. She has extensive experience with SQL and relational database modeling using PostgreSQL, SQL Server, MySQL, and MS Access databases. In her former work study she did scientific modeling and simulation using Fortran.