Tomasz Marzeion
Mobile Team Leader at Idego Group
Gdańsk, Pomeranian Voivodeship, Poland
Summary
👤
Senior🎓
Top SchoolTomasz Marzeion is a Mobile Team Leader and seasoned mobile engineer with 10 years of experience building high-impact Android and Flutter applications across healthcare, fintech, edtech, and retail. He combines hands-on development—shipping large-scale apps and fintech features—with team leadership at Idego Group and a prolific freelance practice delivering end-to-end Flutter solutions using Clean Architecture and CI/CD. Tomasz has contributed to notable open-source healthcare projects like OpenMRS, touching front-end UI, Android client refactors, and REST API enhancements, and has improved test reliability in reference EMR distributions. His background includes building multi-million-download banking and healthcare apps and implementing scalable architectures for unicorn-scale products, showing both production rigor and user-focused design. Based in Gdańsk, he balances continuous learning with practical delivery, and intriguingly started his career as a kitesurf instructor—reflecting a hands-on, adventurous approach to problem solving.
10 years of coding experience
9 years of employment as a software developer
Bachelor's degree Internal Security, Bachelor's degree Internal Security at Akademia Marynarki Wojennej w Gdyni
Polish, English, kashubian
Github Skills (27)
uitest10
api-rest10
javascript10
selenium10
api-design10
restful-api10
model-view10
mvp10
selenium-ide10
ui-design10
interface-design10
java10
webservice10
javas10
junit10
Programming languages (8)
Github contributions (5)
openmrs/openmrs-contrib-android-client
Aug 2016 - Mar 2017
Android client for OpenMRS
Role in this project:
Mobile Developer (Android)
Mobile Developer (Android)Contributions:13 releases, 139 commits, 160 PRs in 6 months
Contributions summary:Tomasz primarily focused on the development of the OpenMRS Android client, making numerous changes to various components. Their contributions include fixing issues related to the find patient list sorting, network connections, and UI animations within the patient view. Furthermore, the user refactored the find patients storyboard and improved the active visits layout. The user also implemented MVP (Model-View-Presenter) architecture across several activities and fragments, specifically related to patient dashboards, synced patients and form entry.
openmrsjiraandroidjavaandroid-client
openmrs/openmrs-distro-referenceapplication
Aug 2016 - Nov 2016
The reference distribution of the OpenMRS EMR application (v3)
Role in this project:QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:35 commits, 33 PRs, 13 pushes in 3 months
Contributions summary:Tomasz primarily worked on improving the reliability of existing tests within the `ui-tests` directory. These changes involved modifying test implementations to address flakiness and ensure consistent results, as evidenced by multiple commits with messages indicating fixes to the `AddDiagnosisToVisitNoteTest` and `CaptureVitalsTest`. Additionally, the user made adjustments to the `AddUserTest`, `ContactInfoTest`, and other UI tests, implying a focus on maintaining and improving the test suite's effectiveness. They addressed issues related to test flakiness and made a number of reliability improvements.
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