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I am a software developer, consultant, technical project manager, and architect with over 20 years of professional experience. Throughout my career, I have worked closely with customers and users, ensuring clean code is at the core of every project. Collaboration with fellow developers, architects, and decision-makers has always been central to my approach. With a broad range of experience across diverse industries such as banking, tourism, pharmaceuticals, energy systems, agriculture, finance, and public services, I enjoy applying my expertise to solve complex software challenges. My strong focus is always on delivering high-quality, maintainable software that meets clients' needs effectively.…I am a software developer, consultant, technical project manager, and architect with over 20 years of professional experience. Throughout my career, I have worked closely with customers and users, ensuring clean code is at the core of every project. Collaboration with fellow developers, architects, and decision-makers has always been central to my approach. With a broad range of experience across diverse industries such as banking, tourism, pharmaceuticals, energy systems, agriculture, finance, and public services, I enjoy applying my expertise to solve complex software challenges. My strong focus is always on delivering high-quality, maintainable software that meets clients' needs effectively.

Dirk Rottmar

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I am a software developer, consultant, technical project manager, and architect with over 20 years of professional experience. Throughout my career, I have worked closely with customers and users, ensuring clean code is at the core of every project. Collaboration with fellow developers, architects, and decision-makers has always been central to my approach. With a broad range of experience across diverse industries such as banking, tourism, pharmaceuticals, energy systems, agriculture, finance, and public services, I enjoy applying my expertise to solve complex software challenges. My strong focus is always on delivering high-quality, maintainable software that meets clients' needs effectively.…I am a software developer, consultant, technical project manager, and architect with over 20 years of professional experience. Throughout my career, I have worked closely with customers and users, ensuring clean code is at the core of every project. Collaboration with fellow developers, architects, and decision-makers has always been central to my approach. With a broad range of experience across diverse industries such as banking, tourism, pharmaceuticals, energy systems, agriculture, finance, and public services, I enjoy applying my expertise to solve complex software challenges. My strong focus is always on delivering high-quality, maintainable software that meets clients' needs effectively.

Available to hire

I am a software developer, consultant, technical project manager, and architect with over 20 years of professional experience. Throughout my career, I have worked closely with customers and users, ensuring clean code is at the core of every project. Collaboration with fellow developers, architects, and decision-makers has always been central to my approach.

With a broad range of experience across diverse industries such as banking, tourism, pharmaceuticals, energy systems, agriculture, finance, and public services, I enjoy applying my expertise to solve complex software challenges. My strong focus is always on delivering high-quality, maintainable software that meets clients’ needs effectively.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Work Experience

Principal Software Engineer at Kaut-Bullinger Ltd. & Co. KG

September 1, 2022 - Present

Independently planned and implemented data migration and re-engineering of Pentaho ETL jobs and transformations to synchronize online shops using Perl, Unix-Bash, SQL, Java, and various database systems. Focused on ETL data migration for data warehouse synchronization.

Senior Software Consultant at Commerzbank Inc.

August 31, 2022 - September 5, 2025

Supported and developed the web portal commerzbank.de as part of the Cross Channel Banking project. Responsibilities included standardizing online banking features, modularizing monolithic architecture, implementing login and authorization frameworks, processing complex user stories in a Scrum environment, and conducting code reviews.

Senior Software Consultant at Amadeus Ltd.

September 30, 2019 - September 5, 2025

Conducted backend evaluation, prototype development, and Angular frontend development. Involved in infrastructure consulting, developing Eclipse-Microprofiles prototypes, implementing REST interfaces, planning and realizing JPA layers, and performing code reviews. Technologies included Java, Eclipse-Microprofiles, Payara, Quarkus, Angular, and Docker.

Senior Software Consultant at Commerzbank Inc.

April 30, 2020 - September 5, 2025

Participated in a database migration project (DB2 to Oracle Exadata), implementing new features, performing error analysis, migrating Java business and data access layers, adapting Faces views, conducting code reviews, and mentoring junior developers.

Management / Lead Developer / Software Architect / Software Engineer at medianet Ltd.

December 31, 2018 - September 5, 2025

Led and managed multiple software projects across various clients such as Siemens-Haustechnik, Fresenius, Hoffmann-La-Roche, Philips, and the American Embassy in Germany. Delivered Java full-stack development, architecture design, and project management in small and medium-sized teams.

Lead Developer and Architect at medianet Ltd.

December 31, 2018 - September 5, 2025

Designed and developed iOS and Android accompanying apps for trade fairs including Agritechnica, Eurotier and Feldtage, supporting product and exhibitor research along with individual planning and visualization functions. Managed project architecture, development of Ionic/Angular apps and Spring MVC backend, and controlled the release process for app stores.

Project Manager / Lead Developer at DLG e.V.

December 31, 2017 - September 5, 2025

Led the development and maintenance of a global agricultural internship job exchange platform with frontends for job seekers, providers, and administration. Developed Spring MVC backend, REST interfaces, Angular 2 frontend, and automated MS Office document generation. Managed architecture, design, and support.

Software Architect and Developer at DLG e.V.

December 31, 2016 - September 5, 2025

Developed a modular and scalable online member administration system for 25,000 members including backend and frontend development using Spring MVC, Angular 2, Thymeleaf, and integrated content management. Included design, architecture, development, and maintenance tasks.

Project Manager / Lead Developer at DLG Academy

December 31, 2016 - September 5, 2025

Developed the DLG Academy website for seminar research, booking, and administration. Responsibilities spanned architecture, backend and frontend development using Spring MVC and Angular 2, interface development to CRM and invoicing systems, data replication, import/export applications, and content management integration.