Mikołaj Kiereś is a Senior Mobile Apps Engineer based in Sydney with 10 years of hands-on experience building cross-platform mobile solutions and leading small mobile teams. He has deep Xamarin/.NET expertise, having contributed to Xamarin.Forms and maintained popular plugins like device_calendar, and has driven full-stack features including .NET Core APIs and Azure-integrated libraries. At Endeavour Group and The Yield he combined hands-on development, QA automation, and team mentorship while owning CI/CD and documentation efforts. A pragmatic engineer who moves between coding, test automation, and architecture, he also contributes to open source and documents his developer journey on a long-running technical blog. Outside work he’s an avid board-gamer and outdoor adventurer, often blending travel and camping with side projects and app development.
10 years of coding experience
10 years of employment as a software developer
MSc, Electronics and Telecommunications, MSc, Electronics and Telecommunications at Politechnika Wrocławska
A cross platform plugin for modifying calendars on the user's device
Role in this project:
Mobile Developer (Android/iOS)
Contributions:48 commits, 63 PRs, 139 pushes in 28 days
Contributions summary:Mikołaj primarily contributed to the development of a cross-platform mobile application for managing calendar events. Their commits focused on enhancing the functionality of the device calendar plugin by adding features such as retrieving event attendees and handling platform-specific exceptions. Additionally, the user addressed issues related to permissions and implemented UI improvements within the example app. They also worked on refactoring and clarifying comments within the project.
Contributions:5 commits, 6 PRs, 27 comments in 5 months
Contributions summary:Mikołaj contributed to the Xamarin.Forms repository by developing and automating UI tests. They created tests for specific issues, including those related to switch functionality and list view behavior. Their work involved writing test cases, verifying user interface elements, and validating application behavior under various scenarios, contributing to the overall quality assurance of the project.
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Mikołaj Kiereś - Senior Mobile Apps Engineer at Endeavour Group