Felix Jahn
Senior Front-end Developer at Toptal
Germany
Summary
👤
Senior🎓
Top SchoolFelix Jahn is a Senior Front-end Developer based in Germany with over 15 years of software development experience and a Diplom in Computer Science. He specializes in modern web UIs using React, TypeScript, JavaScript, HTML5 and CSS3, and has driven front-end architecture, tech decisions and implementations for both enterprise energy management and consumer-facing gaming platforms. Felix has a strong track record as a long-term freelancer and consultant, delivering production-grade clients with testing, build tooling and real-time features (Server-Sent Events, Cordova) before joining Toptal in 2020. Comfortable across legacy and modern stacks—from Flex/Flash era projects to current React ecosystems—he brings pragmatic engineering judgment and a habit of evolving platforms rather than rewriting them.
10 years of coding experience
16 years of employment as a software developer
Degree in computer science (Diplom-Informatiker FH), Media and Computer Science, Thesis grade: very good, overall grade: good, Degree in computer science (Diplom-Informatiker FH), Media and Computer Science, Thesis grade: very good, overall grade: good at Beuth Hochschule für Technik Berlin (ehemals Technische Fachhochschule Berlin)
English, German, Spanish, Russian
Github Skills (108)
hot-reload10
typescript-definitions10
form-validation10
javascript10
filtering10
typescript10
redux-form10
dts10
react-tooltip10
webpack-plugin10
validation9
jackson9
tooltips9
react-redux9
charting9
Programming languages (3)
Github contributions (5)
Q-Man/DefinitelyTyped
Apr 2016 - Mar 2018
Contributions:4 pushes in 1 year 11 months
type-definitionshigh-qualitydefinitionstypescriptquality
Q-Man/happo-storybook-userevent
May 2023 - May 2023
Contributions:9 pushes, 1 branch in 3 days
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