Jonas Da Silva
Systems Developer at Simon Fraser University
Berlin, Germany
Summary
🤩
Rockstar🎓
Top SchoolJonas Da Silva is a polyglot systems developer with over 20 years of experience building and optimizing mission-critical software, from C# microservices for foreign-exchange operations to PHP-based open-source publishing platforms and reactive Vue.js SPAs. He combines deep backend expertise (performance tuning, message brokers, SQL optimization) with front-end reactivity and design-system work, and has driven dramatic resource reductions such as cutting a service’s memory from 2 GiB to 100 MiB and query times from 20 minutes to 30 seconds. A long-time open-source contributor to well-known projects like PKP/OJS and php-gettext, he helps modernize scholarly publishing tools used by tens of thousands of users while also shipping commercial systems for clients including Pfizer, Nike and Toyota. Comfortable leading remote, asynchronous teams and mentoring others, Jonas equally enjoys hunting bugs and open-sourcing solutions, and holds dual Brazilian/Russian citizenship while being based in Berlin and open to relocation for the right role.
21 years of coding experience
19 years of employment as a software developer
Bachelor's degree, Computer and Information Systems Security/Information Assurance, Bachelor's degree, Computer and Information Systems Security/Information Assurance at Universidade de Santo Amaro
English, Russian, Portuguese
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (15)
database-management10
debug10
php10
internationalization10
gettext10
sql10
translation10
cpp-templates9
html-template9
python-templates9
apptemplates9
code-templates9
web-development9
code-formatting8
phpunit8
Programming languages (8)
Github contributions (5)
pkp/pkp-lib
Mar 2019 - Jan 2023
The library used by PKP's applications OJS, OMP and OPS, open source software for scholarly publishing.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:636 reviews, 296 commits, 376 PRs in 3 years 10 months
Contributions summary:Jonas primarily worked on back-end improvements and bug fixes within the PKP library. They updated templates, corrected notification messages, and replaced invalid translation keys. Additionally, the user made code changes related to the handling of plugin installation, including error handling for plugin deletion and the handling of file uploads.
securityapplication-libraryweb-applicationpkp
pkp/ojs
Mar 2019 - Jan 2023
Open Journal Systems is open source software to manage scholarly journals.
Role in this project:Back-end Developer
Back-end DeveloperContributions:175 reviews, 165 commits, 343 PRs in 3 years 10 months
Contributions summary:Jonas's commits primarily involve modifying code within the `classes/article/PublishedArticleDAO.inc.php` file. The changes include updating database queries, modifying SQL statements to optimize retrieval of published articles, and adding new methods to access article data. The focus appears to be on improving the data access layer related to published submissions within the OJS platform. The user also extended ReCaptcha to the login page.
journalopen-access
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