Jonas Greifenhain

Software Engineer

Software engineer at AWS working on mobile and cloud infrastructure. Building both open-source and internal tools, with a focus on improving AI-driven development workflows.

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Berlin, Germany

About

I'm a software engineer at AWS, contributing to open-source projects including the Amplify Flutter SDK and AWS Blocks. I work across mobile and cloud technologies, primarily with Flutter, TypeScript, and Node.js.

My background includes embedded systems and electronics, which I studied as a minor. I enjoy contributing to open-source software and exploring different areas of development.

Current Work

AWS Amplify

Contributing to multiple libraries across the AWS Amplify organization, helping developers build full-stack cloud applications with Flutter, JavaScript, and other platforms.

FlutterDartTypeScriptAWS

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AWS Blocks

Contributing to AWS Blocks - composable building blocks for full-stack AWS applications with end-to-end type safety.

TypeScriptAWSCDK

Community Contributions

Contributions to external projects and libraries. Hover for details, click to visit.

Flutter Secure Storage

Secure storage plugin for Flutter apps

My contribution: Fixed Android compilation issues with Flutter's compileSdkVersion

WebView CEF

Chromium Embedded Framework webview for Flutter Desktop

My contribution: Multiple contributions: null-safe fixes, auto-setup for Linux, build improvements, CI pipelines

LibreOffice Core

Free office suite for documents, spreadsheets, and presentations

My contribution: Enabled tab scrolling in notebook bar with improved touchpad sensitivity

Dart Build System

Build system for Dart and Flutter projects

My contribution: Added web worker support to entrypoint loader for JS/WASM compilation

Universal BLE

Cross-platform Bluetooth Low Energy library for Flutter

My contribution: Added pub.dev pipeline, fixed Android builds, improved iOS/macOS name handling

Background Location

Flutter plugin for background location tracking

My contribution: Upgraded Gradle for compatibility and updated location services to fix crashes

Flutter Image Slideshow

Image carousel widget for Flutter applications

My contribution: Added option to disable manual scrolling during auto-scroll

Broadlink Manager

Docker container for managing Broadlink smart home devices

My contribution: Updated Python library and added support for RM4c (0x6539) device

Skills

Languages

DartTypeScriptJavaScriptPythonC++SwiftKotlin

Technologies

FlutterNode.jsAWSReactGit