Steffen Deusch
Software Engineer
Summary
🤩
RockstarSteffen Deusch is a pragmatic software engineer with 11 years of experience and a strong open-source focus, contributing to high-profile projects like Elixir, Phoenix, and Phoenix LiveView. He specializes in backend systems, test frameworks, and reliability improvements — notable work includes implementing ExUnit features for deterministic and repeat-until-failure test runs and enhancing OTP process control in erlexec. His contributions span languages and stacks (Erlang/Elixir, Python, web servers), improving token security, concurrency, and robust request handling. Steffen combines careful refactors and testing discipline with practical feature additions, and has a knack for uncovering subtle race conditions and hard-to-reproduce bugs.
11 years of coding experience
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (27)
concurrent10
erlang10
python10
redis10
elixir10
testing10
test-framework10
wsgi10
otp10
exunit10
phoenix-liveview10
phoenix-framework10
web-framework10
webdav10
concurrency10
Programming languages (15)
Github contributions (5)
phoenixframework/phoenix_live_view
Sep 2021 - Apr 2025
Rich, real-time user experiences with server-rendered HTML
Role in this project:
Back-end Developer
Back-end DeveloperContributions:111 reviews, 320 PRs, 364 pushes in 3 years 7 months
Contributions summary:Steffen contributed to the Phoenix LiveView framework by addressing various issues related to its core functionality. Their work included adding a new callback to the live component behavior, improving form handling, and fixing race conditions. They also focused on features like reordering stream items.
javascriptliveviewphoenix-liveviewexperiencesserver-rendered
phoenixframework/phoenix
Jul 2019 - Apr 2025
Peace of mind from prototype to production
Role in this project:Back-end Developer
Back-end DeveloperContributions:78 reviews, 180 PRs, 261 pushes in 5 years 9 months
Contributions summary:Steffen contributed to the Phoenix framework by adding functionality to the token module, specifically adding the `max_age` option for signing and encrypting tokens. They also addressed issues related to live reload patterns, ensuring that the uploads folder is excluded. Furthermore, the user implemented changes related to authentication, including adding a virtual field for the `current_password`. Additional contributions included updates to JavaScript dependencies and the migration of testing frameworks from Mocha to Jest.
realtimepeacephoenix-frameworkelixirprototype
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