Marcello Barnaba
Production Engineer at Meta
Rome, Lazio, Italy
Summary
👤
SeniorMarcello Barnaba is a Production Engineer with 23 years of hands-on experience building and operating large-scale UNIX-based systems, currently working on MetalOS at Meta where he develops systems code in Rust and Python and provisions fleets of bare-metal servers. A lifelong open-source advocate, he has contributed to prominent Ruby/Rails projects like shoulda-matchers and Formtastic, improving test coverage and library internals for email testing and form-building flexibility. His background blends software engineering, systems administration and network operations across NGOs, consultancies and startups, demonstrating an ability to move between code, infrastructure and database-level debugging (including work on Sybase ASE bindings). Fast-learning and improvement-focused, he enjoys fixing brittle systems and shipping changes that impact millions of machines. Based in Rome, he brings a pragmatic, hands-on approach informed by two decades of production incidents, automation and netbooting experience.
23 years of coding experience
21 years of employment as a software developer
Italian, English
Stackoverflow
486reputation
160kreached
8answers
0questions
Github Skills (22)
ruby-rails10
testing10
rspec10
databases10
rails10
database-administration10
ruby10
sql10
sybase10
database10
refactor9
refactoring9
microsoft-sql-server8
sql-server8
mssqlserver8
Programming languages (15)
Github contributions (5)
rails-sqlserver/tiny_tds
Dec 2011 - Nov 2012
TinyTDS - Simple and fast FreeTDS bindings for Ruby using DB-Library.
Role in this project:
Database Engineer / Database Administrator
Database Engineer / Database AdministratorContributions:9 commits in 10 months
Contributions summary:Marcello focused on enhancing the repository's database interaction capabilities, primarily with Sybase ASE. They added schema definitions, including SQL and connection settings for Sybase ASE. Furthermore, they adapted existing tests to be compatible with ASE 12.5 and made changes to address obscure syntax errors, and implemented an abstraction for different identity functions. The user also implemented tests related to Sybase stored procedures.
sql-servertinytdssqlrubydatabase
formtastic/formtastic
Jun 2014 - Jun 2014
A Rails form builder plugin with semantically rich and accessible markup.
Role in this project:Back-end Developer
Back-end DeveloperContributions:7 commits in 1 day
Contributions summary:Marcello primarily focused on improving the internal workings of the Formtastic library. They refactored and optimized the class finder API, making it more readable and efficient, which included improvements to the caching mechanism. Additionally, they added configurable namespaces for inputs and actions, enhancing the library's flexibility. The commits also demonstrate a focus on improving code documentation and generator templates.
form-builderrailsaccessiblerubybuilder
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.