Jesús Sáez
Software Engineer at CoinTracker
Zaragoza, Aragon, Spain
Summary
👤
Senior🎓
Top SchoolJesús Sáez is a seasoned software engineer with 17 years of experience, currently building backend systems at CoinTracker after leading backend and IoT platform work at Fresco. He specializes in Python-driven services and backend integrations, with deep experience in performance tuning, serverless optimization, and building highly available AWS infrastructure. Jesús has a strong open-source pedigree, contributing backend fixes and MySQL/OpenChange integrations to notable projects like Zentyal and SOGo, evidencing expertise in mail/collaboration protocols and interoperability. Comfortable across languages from C/C++ and Objective-C to Ruby and Perl, he brings pragmatic problem-solving to complex systems and migrations that yielded multi-order performance gains. Based in Zaragoza, Spain, he pairs hands-on coding with infrastructure and DevOps craftsmanship, and his playful GitHub bio hints at a pragmatic, curious engineering style.
17 years of coding experience
17 years of employment as a software developer
Engineer Computer Science, Engineer Computer Science at Universidad de Zaragoza
Spanish, English
Github Skills (14)
objective-c10
linux10
perl10
mysql10
samba10
data-integration9
sql-database9
character-encoding9
error-handling9
configuration-management9
databases9
go8
javascript8
jgroups7
Programming languages (8)
Github contributions (5)
Alinto/sogo
Nov 2013 - Feb 2016
SOGo is a very fast and scalable modern collaboration suite (groupware). It offers calendaring, address book management, and a full-featured Webmail client along with resource sharing and permission handling. It also makes use of documented standards (IMAP, CalDAV, CardDAV, etc.) and thereby provides native connectivity (without plugins) to many clients such as Microsoft Outlook, Apple iCal, the iPhone, Mozilla Lightning, and a plethora of mobile devices.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:194 commits, 2 PRs, 5 comments in 2 years 3 months
Contributions summary:Jesús primarily contributed to the back-end components of the SOGo collaboration suite. Their work involved fixing bugs, improving code quality, and adding functionality to the core components related to the MAPIStore and OpenChange modules. The contributions demonstrate a focus on addressing issues related to folder synchronization, character encoding, and database interactions, ensuring data integrity and proper functionality. Moreover, the user's changes touched upon performance improvements and handling exceptions, indicating an effort to enhance the stability and reliability of the application.
sogofull-featuredcontactssharingcollaboration
zentyal/zentyal
Nov 2013 - Oct 2015
Linux Small Business Server
Role in this project:Back-end Developer
Back-end DeveloperContributions:47 commits, 6 pushes, 8 branches in 1 year 11 months
Contributions summary:Jesús primarily focused on enhancing the Zentyal Linux Small Business Server's back-end functionalities. Their contributions involved integrating MySQL as a backend for OpenChange, a key component for Exchange-like services, and modifying Samba configurations. The user also worked on provisioning and deprovisioning OpenChange with MySQL, ensuring proper database interaction and configuration of connection strings. Moreover, they implemented changes in the software management UI, allowing 'select all' checkbox functionality for updates.
self-hostinglinuxfail2bansmall-business
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