Dirk Lemmermann
CEO at DLSC Software & Consulting GmbH
Adliswil, Zurich, Switzerland
Summary
👤
Senior🎓
Top SchoolDirk Lemmermann is a veteran software engineer and CEO with over four decades of programming experience and three decades of professional practice, specializing in Java and JavaFX UI frameworks. He founded and leads DLSC and has driven commercialization of UI libraries (DJT, FlexGanttFX) used across scheduling, medical, and energy domains, licensing products to hundreds of customers. A Java Champion and JavaFX evangelist, he contributes to prominent open-source projects like ControlsFX and CalendarFX, with notable commits improving PopOver, SegmentedBar and calendar editing features. Dirk combines hands-on full‑stack development with product leadership—building complex desktop clients and CRM systems—while mentoring teams and moving niche, high-quality UI toolkits into production. Based in Zurich, he pairs academic training (MS Computer Science) with a track record of turning advanced scheduling and visualization research into widely used commercial software.
12 years of coding experience
20 years of employment as a software developer
Bachelor, Computer Science, Bachelor, Computer Science at Towson UniversityMS, Computer Science, MS, Computer Science at Carl von Ossietzky University of Oldenburg
German, English
Stackoverflow
156reputation
12kreached
10answers
2questions
Github Skills (10)
css10
javas10
uid10
javafx10
front-end-development10
java10
ui-design9
database6
mysql6
gantt-chart6
Programming languages (7)
Github contributions (5)
dlsc-software-consulting-gmbh/CalendarFX
Oct 2017 - Jan 2023
A Java framework for creating sophisticated calendar views (JavaFX 8, 9, 10, and 11)
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:17 releases, 3 reviews, 343 commits in 5 years 3 months
Contributions summary:Dirk primarily focused on developing the user interface for the JavaFX calendar framework. Their contributions included fixing the output of product information and removing obsolete dependencies, along with code cleanup. The user was also involved in implementing functionality related to editing entries and adding and organizing modules, particularly adding module-info.java files.
calendarjavafx-8javafxjavajava-framework
controlsfx/controlsfx
Nov 2013 - Nov 2016
High quality UI controls to complement the core JavaFX distribution
Role in this project:Front-end Developer
Front-end DeveloperContributions:95 commits, 52 comments, 8 issues in 3 years
Contributions summary:Dirk's commits primarily focus on the development of UI elements for the controlsfx library, specifically the "PopOver" and "SegmentedBar" components, and updating existing components such as the "ListSelectionView". The commits include modifications to the CSS, layouts, and various JavaFX controls to provide new features, improve visual appearance, and fix layout issues. Additionally, the user demonstrated the ability to address reported bugs within the control library.
ui-controlshigh-qualityjavafxcomplementjava
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