Tomislav Jovanović
Network Engineer at Comtrade System Integration
Serbia
Summary
🤩
Rockstar🎓
Top SchoolTomislav Jovanović is a seasoned network engineer with 14 years of experience combining ISP core network operations and systems engineering with hands-on Cisco and MikroTik certifications (CCNP, CCNA, MTCNA/MTCRE/MTCTCE/MTCWE). He currently splits his time between Comtrade System Integration and core network responsibilities at BeotelNet, guiding resilient infrastructure and traffic-control strategies for large-scale networks. Beyond networking, Tomislav contributes to open-source projects—most notably improving Firefox's WebExtensions system and fixing long-standing issues in the popular gPodder podcast client—demonstrating a rare blend of low-level networking expertise and full-stack software development. Based in Serbia and educated in computer engineering at the University of Belgrade, he brings pragmatic troubleshooting skills, protocol-level insight, and a knack for integrating tooling and telemetry into production systems.
13 years of coding experience
13 years of employment as a software developer
Engineer's degree, Computer Engineering, Engineer's degree, Computer Engineering at Univerzitet u BeograduPrva beogradska gimnazija
English, Serbian
Github Skills (20)
debug10
javascript10
addin10
python10
plugin-development10
packaging10
typescript10
gtk10
firefox10
typescript-types10
webextension10
typescripts10
unit-test10
addon10
testing9
Programming languages (11)
Github contributions (5)
mozilla/addon-sdk
Aug 2013 - Jan 2015
DEPRECATED - The Add-on SDK repository.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:171 commits, 5 PRs, 3 pushes in 1 year 5 months
Contributions summary:Tomislav primarily focused on adding functionality to handle preference branches within the Add-on SDK. Their commits included modifying existing files such as `cuddlefish/packaging.py`, `python-lib/cuddlefish/xpi.py`, and `python-lib/cuddlefish/options_xul.py` to support the new preference-branch feature. They also created and adapted test files, updating existing tests and adding new tests across the `addons`, `simple-prefs`, and `curly-id` test files to validate and ensure correct functionality of the preference-branch implementation. This work demonstrates a focus on modifying build and packaging tools to enable new add-on configuration options.
add-onsdkabandoned
mozilla/gecko-dev
Jul 2014 - Jan 2023
Read-only Git mirror of the Mercurial gecko repositories at https://hg.mozilla.org. How to contribute: https://firefox-source-docs.mozilla.org/contributing/contribution_quickref.html
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:282 commits in 8 years 7 months
Contributions summary:Tomislav primarily worked on enhancing the Firefox browser's extension system, with a focus on optional permissions and storage. They implemented features to track runtime permission requests and ensure quota enforcement for session storage within extensions. Furthermore, the user contributed to the development of tooling, including type definitions and Glean integration for metrics collection. Their work involved modifying various components to integrate these new features.
repositoriesfirefoxmercurialgit-mirrormozilla
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