Klemen Tusar
Technical Lead - OPTO at CMC Markets
London, England, United Kingdom
Summary
👤
Senior🎓
Top SchoolKlemen Tusar is a Principal Software Engineer with 11 years of experience building web and mobile products, currently leading a five-engineer team at CMC Markets in London. He began his career developing PHP and JavaScript systems for major Slovenian news publishers, later transitioning to fintech where he helped evolve a legacy PHP backend and led the product development of OPTO, a thematic investment app now shipping mobile features. Klemen blends full-stack depth (Laravel, Vue.js, Flutter) with backend tooling expertise, and he authored the popular Python package sqlite3-to-mysql used by projects like Home Assistant and Our World In Data. An active open-source maintainer, he has significantly improved the Dart/Flutter Chopper HTTP generator, addressing nullable types, worker pools and image upload testing. His background in medicine studies and a history as the sole developer for large news sites give him uncommon experience translating complex domain needs into resilient, production-ready systems.
11 years of coding experience
9 years of employment as a software developer
Medicine, Medicine at University of LjubljanaA - level equivalent, General Secondary School, A - level equivalent, General Secondary School at Secondary school of Vipava
Slovenian, English, German, Italian, Croatian
Stackoverflow
9,449reputation
2.4mreached
127answers
3questions
html
top-1%
sqlite
top-5%
javascript
top-5%
forms
top-1%
Github Skills (16)
html10
code-generation10
dart10
forms10
testing9
javascript9
sqlite9
json8
datetime6
css6
highlighting6
php6
jquery6
python6
regex6
Programming languages (17)
Github contributions (5)
lejard-h/chopper
Jul 2022 - Jan 2023
Chopper is an http client generator using source_gen and inspired from Retrofit.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:113 reviews, 20 commits, 328 PRs in 5 months
Contributions summary:Klemen primarily focused on improving the `chopper` library, an HTTP client generator. Their contributions involved fixing compilation issues related to nullable QueryMap parameters and updating the code to support features such as compute() and isolate worker pools. The user also addressed code style and implemented an image upload test. Furthermore, they worked on improving the library's overall functionality and expanding its capabilities with new features.
retrofitsource-genhttp-clientdarthttpclient
techouse/alfred-nova-docs
Nov 2018 - Dec 2022
Search the Laravel Nova documentation using Alfred and Algolia
Contributions:22 releases, 49 commits, 1 PR in 4 years 2 months
alfred-workflowalgolia-searchlaravellaravel-nova
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