Piotr Wittchen
Remote Software Engineer Contractor at VCU
Poland
Summary
🤩
Rockstar🎓
Top SchoolPiotr Wittchen is a pragmatic remote software engineer with 14 years of experience building mobile, backend and stream-processing systems primarily in Java/JVM ecosystems, with hands-on work in Python, Go and Swift. He has designed and shipped low-latency, high-throughput authentication and fraud-detection pipelines using Apache Flink, Kafka and cloud-native tooling, and contributed core mobile SDKs and device-fingerprinting features used in production by major banks. Piotr is an active open-source maintainer—his GitHub projects (6k+ stars, 800+ forks) and top-tier StackOverflow presence reflect a strong developer advocacy footprint and community impact. Comfortable across startups and large enterprises, he combines solid academic training with practical expertise in testing, automation, observability and clean code. He prefers 100% remote roles with transparent salary ranges and is open to engineering, architect and developer-advocate positions.
14 years of coding experience
20 years of employment as a software developer
Master's Degree, Macrofaculty of Automatic Control, Electronics and Computer Science, Master's Degree, Macrofaculty of Automatic Control, Electronics and Computer Science at The Silesian University of Technology
English, Polish
Stackoverflow
3,893reputation
464kreached
130answers
6questions
gradle
top-5%
android
top-5%
android-studio
top-5%
Github Skills (19)
rxjavafx10
java10
javas10
android10
rxjava10
unit-testing9
gradle9
android-studio9
network8
kotlin8
robolectric7
android-jetpack6
android-workmanager6
xcode6
jacoco6
Programming languages (22)
Github contributions (5)
pwittchen/ReactiveNetwork
Mar 2018 - Dec 2022
Android library listening network connection state and Internet connectivity with RxJava Observables
Role in this project:
Mobile Developer (Android)
Mobile Developer (Android)Contributions:47 releases, 2 reviews, 282 commits in 4 years 9 months
Contributions summary:Piotr made significant contributions focused on enhancing the Android library `reactivenetwork`. They implemented and refined settings and builder patterns for internet connectivity settings, introducing API-breaking changes to improve code consistency. The user also improved unit test coverage, and fixed Robolectric test issues. The user's work primarily involved modifying Java and Kotlin code related to network monitoring and connectivity, improving the robustness and maintainability of the Android library.
internet-connectivityrxjavarxandroid2connectionconnectivity
pwittchen/voucher-storage-service
Dec 2018 - Jul 2019
Contributions:21 commits, 20 pushes in 7 months
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