![Johannes Kettmann profile picture](https://media2.dev.to/dynamic/image/width=320,height=320,fit=cover,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F140139%2F5881453b-c3cb-4812-a9e8-4c41db313b70.jpg)
Johannes Kettmann
Building the React Job Simulator for (aspiring) Junior developers at profy.dev. React & Fullstack JS dev with 7+ years of experience.
Work
Teaching professional React at Profy.dev
![Writing Debut](https://media2.dev.to/dynamic/image/width=180,height=,fit=scale-down,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fbadge%2Fbadge_image%2F280%2FWriting_Streak_Badges-05.png)
![Writing Debut Writing Debut badge](https://media2.dev.to/dynamic/image/width=192,height=,fit=scale-down,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fbadge%2Fbadge_image%2F280%2FWriting_Streak_Badges-05.png)
Writing Debut
Awarded for writing and sharing your first DEV post! Continue sharing your work to earn the 4 Week Writing Streak Badge.
![Five Year Club](https://media2.dev.to/dynamic/image/width=180,height=,fit=scale-down,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fbadge%2Fbadge_image%2F91%2FVersion2-04.png)
![Five Year Club Five Year Club badge](https://media2.dev.to/dynamic/image/width=192,height=,fit=scale-down,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fbadge%2Fbadge_image%2F91%2FVersion2-04.png)
Five Year Club
This badge celebrates the longevity of those who have been a registered member of the DEV Community for at least five years.
![Four Year Club](https://media2.dev.to/dynamic/image/width=180,height=,fit=scale-down,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fbadge%2Fbadge_image%2F75%2FVersion2-05.png)
![Four Year Club Four Year Club badge](https://media2.dev.to/dynamic/image/width=192,height=,fit=scale-down,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fbadge%2Fbadge_image%2F75%2FVersion2-05.png)
Four Year Club
This badge celebrates the longevity of those who have been a registered member of the DEV Community for at least four years.
![8 Week Writing Streak](https://media2.dev.to/dynamic/image/width=180,height=,fit=scale-down,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fbadge%2Fbadge_image%2F12%2FWriting_Streak_Badges-03.png)
![8 Week Writing Streak 8 Week Writing Streak badge](https://media2.dev.to/dynamic/image/width=192,height=,fit=scale-down,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fbadge%2Fbadge_image%2F12%2FWriting_Streak_Badges-03.png)
8 Week Writing Streak
The streak continues! You've written at least one post per week for 8 consecutive weeks. Unlock the 16-week badge next!
![1 Week Community Wellness Streak](https://media2.dev.to/dynamic/image/width=180,height=,fit=scale-down,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fbadge%2Fbadge_image%2F160%2FCommunity_Wellness_Streak_Badge-01.png)
![1 Week Community Wellness Streak 1 Week Community Wellness Streak badge](https://media2.dev.to/dynamic/image/width=192,height=,fit=scale-down,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fbadge%2Fbadge_image%2F160%2FCommunity_Wellness_Streak_Badge-01.png)
1 Week Community Wellness Streak
For actively engaging with the community by posting at least 2 comments in a single week.
![Git](https://media2.dev.to/dynamic/image/width=180,height=,fit=scale-down,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fbadge%2Fbadge_image%2F22%2Fgit-sticker.png)
![Git Git badge](https://media2.dev.to/dynamic/image/width=192,height=,fit=scale-down,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fbadge%2Fbadge_image%2F22%2Fgit-sticker.png)
Git
Awarded to the top git author each week
![React](https://media2.dev.to/dynamic/image/width=180,height=,fit=scale-down,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fbadge%2Fbadge_image%2F26%2Freact-sticker.png)
![React React badge](https://media2.dev.to/dynamic/image/width=192,height=,fit=scale-down,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fbadge%2Fbadge_image%2F26%2Freact-sticker.png)
React
Awarded to the top React author each week
![JavaScript](https://media2.dev.to/dynamic/image/width=180,height=,fit=scale-down,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fbadge%2Fbadge_image%2F16%2Fjs-badge.png)
![JavaScript JavaScript badge](https://media2.dev.to/dynamic/image/width=192,height=,fit=scale-down,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fbadge%2Fbadge_image%2F16%2Fjs-badge.png)
JavaScript
Awarded to the top JavaScript author each week
![Three Year Club](https://media2.dev.to/dynamic/image/width=180,height=,fit=scale-down,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fbadge%2Fbadge_image%2F10%2FVersion2-06.png)
![Three Year Club Three Year Club badge](https://media2.dev.to/dynamic/image/width=192,height=,fit=scale-down,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fbadge%2Fbadge_image%2F10%2FVersion2-06.png)
Three Year Club
This badge celebrates the longevity of those who have been a registered member of the DEV Community for at least three years.
![Two Year Club](https://media2.dev.to/dynamic/image/width=180,height=,fit=scale-down,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fbadge%2Fbadge_image%2F9%2FVersion2-07.png)
![Two Year Club Two Year Club badge](https://media2.dev.to/dynamic/image/width=192,height=,fit=scale-down,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fbadge%2Fbadge_image%2F9%2FVersion2-07.png)
Two Year Club
This badge celebrates the longevity of those who have been a registered member of the DEV Community for at least two years.
![4 Week Writing Streak](https://media2.dev.to/dynamic/image/width=180,height=,fit=scale-down,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fbadge%2Fbadge_image%2F11%2FWriting_Streak_Badges-02.png)
![4 Week Writing Streak 4 Week Writing Streak badge](https://media2.dev.to/dynamic/image/width=192,height=,fit=scale-down,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fbadge%2Fbadge_image%2F11%2FWriting_Streak_Badges-02.png)
4 Week Writing Streak
You've posted at least one post per week for 4 consecutive weeks!
![One Year Club](https://media2.dev.to/dynamic/image/width=180,height=,fit=scale-down,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fbadge%2Fbadge_image%2F2%2FVersion2-08.png)
![One Year Club One Year Club badge](https://media2.dev.to/dynamic/image/width=192,height=,fit=scale-down,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fbadge%2Fbadge_image%2F2%2FVersion2-08.png)
One Year Club
This badge celebrates the longevity of those who have been a registered member of the DEV Community for at least one year.
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