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

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.

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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.

Education

Studied computer science and political science at Universities in Freiburg and Frankfurt, Germany
January 1, 1991 - December 31, 1997

Qualifications

Graduated from high school
January 11, 2030 - January 1, 1989
Certified Professional for Software Architecture iSAQB® CPSA®
January 1, 2020 - September 5, 2025

Industry Experience

Financial Services, Travel & Hospitality, Life Sciences, Energy & Utilities, Agriculture & Mining, Consumer Goods, Software & Internet, Manufacturing

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate

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