I have over 20 years of active Java development experience. I'm self-motivated, curious, and an analytical problem-solver with a scientific approach to work and thinking. I'm passionate about Linux and Java and enjoy tackling complex challenges such as concurrency and performance optimization, with a proven track record in these areas. I am a Linux and Java enthusiast with extensive expertise in full-stack development using Java frameworks and front-end technologies. I have led teams, coordinated EU projects, and developed sophisticated software solutions, always emphasizing best practices and continuous improvement.

Alexander Kerner

I have over 20 years of active Java development experience. I'm self-motivated, curious, and an analytical problem-solver with a scientific approach to work and thinking. I'm passionate about Linux and Java and enjoy tackling complex challenges such as concurrency and performance optimization, with a proven track record in these areas. I am a Linux and Java enthusiast with extensive expertise in full-stack development using Java frameworks and front-end technologies. I have led teams, coordinated EU projects, and developed sophisticated software solutions, always emphasizing best practices and continuous improvement.

Available to hire

I have over 20 years of active Java development experience. I’m self-motivated, curious, and an analytical problem-solver with a scientific approach to work and thinking. I’m passionate about Linux and Java and enjoy tackling complex challenges such as concurrency and performance optimization, with a proven track record in these areas.

I am a Linux and Java enthusiast with extensive expertise in full-stack development using Java frameworks and front-end technologies. I have led teams, coordinated EU projects, and developed sophisticated software solutions, always emphasizing best practices and continuous improvement.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate

Language

German
Fluent
English
Advanced

Work Experience

Developer at Bank CIC, Basel
April 1, 2021 - Present
Full-stack development with Spring Boot and Vue.js. Redeveloped an application to create documents from Microsoft Word templates. Authored a detailed guide for agile development, specifically with Spring Boot. Defined best practices for continuous development and integration using Git, Maven, Jenkins, and Docker. Led the CI migration from Jenkins to OpenShift.
Developer at adesso insurances solutions, Frankfurt am Main
March 1, 2021 - August 27, 2025
Full-stack development and maintenance of the "payTras" transaction system with Java EE 7, Jenkins, and Docker. Defined and improved the software architecture and components, including redevelopment of the logging framework and redefinition of related best practices.
Project Coordinator at Lablicate GmbH, Hamburg
May 1, 2020 - August 27, 2025
Coordinated work on the EU Horizon project 'OLEUM', implementing an application for the storage and management of bioanalytical data focused on quality assurance of edible oils.
Team Lead at Lablicate GmbH, Hamburg
May 1, 2018 - Present
Coordinated and provided technical leadership for various teams of remote developers to implement new software modules.
Developer at Lablicate GmbH, Hamburg
December 1, 2017 - August 27, 2025
Developed for the open-source platform OpenChrom, a software in the field of analytical chemistry. Developed a visually sophisticated desktop application based on Eclipse RCP for applying and visualizing bioinformatics and cheminformatics models.
Freelance Trainer in Bioinformatics at Heidelberg University, Heidelberg
December 1, 2017 - August 27, 2025
Organized and delivered the seminar "Applied Bioinformatics in the Shell and in the Cloud," targeting life science students with a focus on bioinformatics.
Research Assistant at German Cancer Research Center (DKFZ), Heidelberg
December 1, 2014 - August 27, 2025
Developed a full-stack web application for managing genetic data.
Developer at Bank CIC, Basel
April 1, 2021 - Present
Full-stack development with Spring Boot and Vue.js. Redeveloped an application for creating documents from Microsoft Word templates. Authored a detailed guide for agile development, especially with Spring Boot. Defined best practices for continuous development and integration using Git, Maven, Jenkins, and Docker. Led the CI migration from Jenkins to OpenShift.
Developer at adesso insurances solutions, Frankfurt am Main
May 1, 2020 - August 27, 2025
Full-stack development and maintenance of the "payTras" transaction system using Java EE 7, Jenkins, and Docker. Defined and improved the software architecture and components, including redevelopment of the logging framework and redefinition of related best practices.
Project Coordinator at Lablicate GmbH, Hamburg
May 1, 2020 - August 27, 2025
Coordinated work on the EU Horizon project 'OLEUM' which implemented an application for the storage and management of bioanalytical data, aimed at developing methods for quality assurance of edible oils.
Team Lead at Lablicate GmbH, Hamburg
June 1, 2021 - August 27, 2025
Coordinated and provided technical leadership for various teams of remote developers to implement new software modules for the open-source platform OpenChrom, a software from the field of analytical chemistry.
Freelance Trainer in Bioinformatics at Heidelberg University, Heidelberg
December 1, 2017 - August 27, 2025
Organized and delivered the seminar "Applied Bioinformatics in the Shell and in the Cloud" targeting life science students focused on bioinformatics. Covered Unix Shell and R programming.
Research Assistant at German Cancer Research Center (DKFZ), Heidelberg
December 1, 2014 - August 27, 2025
Developed a full-stack web application for managing genetic data. Developed a graphically advanced desktop application for label-free quantification of cancer-related proteins. Implemented performance optimizations including concurrency, background processing, serialization, and stream-based techniques to optimize memory usage.

Education

Dr. rer. nat. (PhD) at Heidelberg University
December 1, 2015 - December 1, 2017
Diploma (Bioinformatics) at University of Applied Sciences Gießen
January 1, 2009 - January 1, 2012
Dr. rer. nat. (PhD) at Heidelberg University
December 1, 2015 - December 1, 2017
Diploma (Bioinformatics) at University of Applied Sciences, Giessen
October 1, 2009 - October 1, 2012

Qualifications

Red Hat OpenShift Developer II: Building and Deploying Cloud-native Applications (DO288)
January 1, 2024 - August 27, 2025
Containers, Kubernetes, and Red Hat OpenShift Administration (DO285)
October 1, 2022 - August 27, 2025
iSAQB Certified Professional for Software Architecture, iSQI Group
January 1, 2020 - August 27, 2025
Red Hat OpenShift Developer II: Building and Deploying Cloud-native Applications (DO288)
January 1, 2024 - August 27, 2025
Containers, Kubernetes, and Red Hat OpenShift Administration (DO285)
October 1, 2022 - August 27, 2025
iSAQB Certified Professional for Software Architecture
January 1, 2020 - August 27, 2025

Industry Experience

Financial Services, Healthcare, Life Sciences, Software & Internet, Education

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate

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