Fosco Marotto
Chief Technology Officer at GAB AI INC.
Wilkes-Barre, Pennsylvania, United States
Summary
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RockstarFosco Marotto is a seasoned technology leader and current CTO at GAB AI Inc., with over a decade of hands-on experience building scalable back-end systems and developer platforms. He spent seven years at Facebook as a Developer Advocate and Production Engineer, and before that led engineering teams across insurance and health tech, blending production reliability with pragmatic delivery. An active open-source contributor, Fosco made notable contributions to Parse Server and RocksDB—helping harden authentication, session management, file handling, and cross-platform build stability for widely used projects. He combines deep systems-level expertise (databases, storage, server frameworks) with product-minded leadership, driving both code-level fixes and strategic platform decisions. Based in Wilkes-Barre, PA, he retains the curiosity of an early founder—having run his own design firm—and applies that entrepreneurial perspective to scaling AI and cloud services.
14 years of coding experience
15 years of employment as a software developer
Stackoverflow
38,328reputation
6.1mreached
745answers
2questions
browser
top-5%
javascript
top-5%
mysql
top-1%
image
top-5%
sql
top-1%
foreach
top-5%
Github Skills (58)
api-rest10
storage-engine10
javascript10
c-language10
jquery10
admin10
back-end-development10
mysql10
api-design10
restful-api10
testing10
databases10
user-authentication10
authentication10
database-administration10
Programming languages (12)
Github contributions (5)
parse-community/parse-server
Jan 2016 - Jun 2016
Parse Server for Node.js / Express
Role in this project:
Back-end Developer
Back-end DeveloperContributions:170 commits, 169 PRs, 137 pushes in 4 months
Contributions summary:Fosco contributed to the Parse Server codebase by addressing various issues and implementing enhancements related to core functionalities. Their work included adding and modifying fields related to Facebook login, session management, and schema object types, demonstrating an understanding of the server's authentication and data handling processes. The user also fixed bugs related to password handling, ACLs, and file uploads and improved unit tests for increased system reliability. These modifications demonstrate a strong understanding of the server's inner workings and architecture.
file-storageexpressnotificationsgraphql-servermongodb
facebook/rocksdb
Jan 2018 - Jan 2020
A library that provides an embeddable, persistent key-value store for fast storage.
Role in this project:Back-end Developer
Back-end DeveloperContributions:22 releases, 23 commits, 119 PRs in 2 years
Contributions summary:Fosco primarily contributed to the RocksDB database library by fixing bugs, improving build compatibility, and optimizing code. They addressed issues related to integer precision in table tests and VS2017 warnings related to unused references. Additionally, they worked on Windows-specific code adjustments and updated the project's build environment to use Visual Studio 2017. The user's contributions involved changes to the core database functionality, compression utilities, and build infrastructure.
persistent-storagebigtablefast-storagelsm-treedatabase
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