The PASS Application Development VG is a developer community with free training and information for developers working with data.

About Us

Group Leadership Team

Armando Lacerda - co-Leader


Over 30 years in the computing field as a developer and system integrator; over 20 years working with SQL Server since version 6; cross platform experience with Oracle and IBM SQL/DS and DB2; Microsoft Certified Trainer (MCT) since 1998.
Armando is a native of Brasil. In 2001, he moved to the US (now on the West coast). Currently, Armando may be found back and forth in South America doing training and consulting. Armando enjoys surfing, diving, biking and jogging. He is a pastor for a Brazilian Christian ministry in Recife.

Carnegie Johnson - co-Leader


Carnegie Johnson is a Consultant at IAYF Consulting focused on training, designing, and developing modern IT solutions primarily around Microsoft technologies. Carnegie has more than 25 years of experience as a IT professional in diverse roles, such as Software Developer, Project Manager, Technical Instructor and Consultant. He has consulted and trained thousands of software developers and IT professionals worldwide.
Carnegie is currently pursuing certification and mastery of Microsoft Azure and cloud solutions.

Davide Mauri - co-Leader


Director of Software Development & Cloud Infrastructure @ Sensoria, an innovative smart garments and wearable company. After more than 15 year playing with the Microsoft .Net and Data Platform, with a specific focus on High Performance databases, Business Intelligence, Data Science and Data Architectures, he's now applying all his skills to IoT, defining architectures to crunch numbers, create nice user experiences and provide meaningful insights, all leveraging Microsoft Azure cloud.
MVP on Data Platform since 2006 he has a very strong background development and love both the ER model and OO principles. He is also a fan of Agile Methodology and Automation, which he tries to apply everywhere he can, to make sure that "people think, machines do".


The App Dev Virtual Chapter was started in November 2013 by Gabriel Villa, Jr who grew the chapter to an impressive 15K users. In June 2015 the leadership was passed to Ed Elliott and Justin Dearing, and after that, from Spring 2017 to Davide Mauri who is restarting the chapter to deliver high quality training and guidance for developers who use not only SQL Server, but the entire Microsoft Data Platform. The scope of the VC will be more broad than in the past, in order to keep up with the request of modern times, embracing topics like NoSQL, Machine Learning, DevOPS, Continuous Integration, Streaming Data and all the technologies that Azure offer related to the Data Platform, discussed from a Developer perspective.

Meeting Schedule

Historically, we schedule at least one presentation every six weeks. We are always seeking good presentations to share with our group. If you would like to volunteer or make a presentation, please reach out to us at or via twitter @PASSAppDev .

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