Philipp Katz
CTO at LineUpr
Dresden, Saxony, Germany
Summary
🤩
Rockstar🎓
Top SchoolPhilipp Katz is a seasoned software leader and co-founder turned CTO with 16 years of experience building product-led startups and developer tools from Dresden, Germany. As co-founder and managing director of LineUpr he built a hybrid event platform that blends attendee engagement features with practical, low-friction deployment for organizers. Philipp pairs hands-on engineering—contributing TypeScript type improvements to the high-profile DefinitelyTyped repository—with product and company leadership, demonstrating a strong full-stack and API-aware mindset. He also developed Selenium KNIME nodes, showing an interest in making automation accessible via graphical workflows. With a Dr.-Ing. in Computer Science from TU Dresden and a background as a research assistant, he bridges rigorous research thinking and pragmatic startup execution. Known for improving type safety across diverse libraries, he brings an attention to developer experience that lifts both product quality and team velocity.
15 years of coding experience
4 years of employment as a software developer
Dr.-Ing., Computer Science, Dr.-Ing., Computer Science at Technische Universität Dresden
German, English, French
Stackoverflow
11,177reputation
782kreached
157answers
110questions
collections
top-5%
sorting
top-5%
mongoose
top-5%
java
top-5%
eclipse
top-5%
arraylist
top-5%
Github Skills (22)
typesc10
typescript10
typescript-definitions10
type-definition10
type-system10
typescript-types10
typescripts10
javascript9
mongoose9
java9
arraylist9
nodejs9
sorting9
eclipse9
collections9
Programming languages (16)
Github contributions (5)
DefinitelyTyped/DefinitelyTyped
Apr 2018 - Nov 2021
The repository for high quality TypeScript type definitions.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:2 reviews, 10 commits, 9 PRs in 3 years 7 months
Contributions summary:Philipp primarily contributed to improving the type definitions within the DefinitelyTyped repository. Their work encompassed fixes and enhancements for various libraries, including i18next, mongoose, email-templates, pdf-parse, jitsi-meet, node-mailjet, ng-dialog and svg-to-pdfkit. The contributions included adding new features, fixing bugs, and updating existing type definitions to align with the latest versions of the libraries. They also addressed issues related to optional parameters and improved overall type safety within the repository.
typescript-definitionstype-definitionshigh-qualitydtsdefinitions
NodePit/svg-to-img
Nov 2019 - Jul 2022
A node.js library to convert SVGs to images built with Puppeteer.
Contributions:10 PRs, 36 pushes, 16 branches in 2 years 8 months
imagejs-libraryscreenshotsvgnode-js
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