Johannes Lumpe
Staff Software Engineer at Orum 🥇
New York, New York, United States
Summary
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Rockstar🎓
Top SchoolJohannes Lumpe is a Staff Software Engineer based in New York with 13 years of experience building full-stack and mobile systems, currently leading engineering efforts at Orum after senior technical leadership at Mark43. He is a TypeScript/JavaScript specialist who pairs front-end UX improvements with back-end robustness—contributions range from React and Draft.js editor fixes to webpack configuration and Node ORM enhancements. Johannes has a strong mobile/ iOS background, having implemented native filesystem and video playback features for React Native projects and shipped production kiosk and iOS apps earlier in his career. He regularly contributes to notable open-source projects (webpack, Draft.js, Bookshelf) where his changes improve developer ergonomics and runtime correctness. Known for pragmatic refactors and careful API handling, he often focuses on edge cases like cursor behavior in editors or error handling in ORM updates. Outside of work he blends design-minded thinking (media design training) with deep engineering, which shows in his attention to both UX details and infrastructure quality.
13 years of coding experience
15 years of employment as a software developer
IHK-Zertifikat Media Design, IHK-Zertifikat Media Design at bm - Gesellschaft für Bildung in Medienberufen mbH
German, English, Turkish
Stackoverflow
1,762reputation
89kreached
44answers
2questions
Github Skills (44)
objective-c10
filesystem10
javascript10
ios10
react-native10
testing10
css-in-js10
css10
databases10
s610
bundle10
ui-design10
uid10
media-playback10
orm10
Programming languages (14)
Github contributions (5)
johanneslumpe/react-native-selectablesectionlistview
Apr 2015 - Dec 2017
A Listview with a sidebar to jump to sections directly
Role in this project:
Front-end Developer
Front-end DeveloperContributions:26 commits, 10 pushes, 1 branch in 2 years 8 months
Contributions summary:Johannes primarily focused on enhancing the user interface and functionality of the `react-native-selectablesectionlistview` project. Their commits demonstrate the implementation of a section list feature, including touch-move selection of sections. They made modifications to `SectionList.js` and `SelectableSectionsListView.js` to add and refine features like a section header, proper scrolling behavior, and handling user interactions for improved usability. The commits also include refactoring the UI elements.
jumpsectionstoolbarsidebarmulti-select
itinance/react-native-fs
May 2015 - Mar 2017
Native filesystem access for react-native
Role in this project:Mobile Developer (iOS)
Mobile Developer (iOS)Contributions:3 releases, 62 commits, 33 PRs in 1 year 11 months
Contributions summary:Johannes primarily contributed to the native iOS implementation of the react-native-fs library. They added functionalities like writing and unlinking files, along with providing access to directory paths like caches and documents. The user also implemented the ability to retrieve file metadata, including size and modification times. The user's work expanded the library's capabilities for file system interactions within React Native iOS applications.
downloadreact-nativereactfilesystem
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