[et_pb_section fb_built=”1″ admin_label=”Header” _builder_version=”4.27.0″ _module_preset=”default” use_background_color_gradient=”on” background_color_gradient_direction=”90deg” background_color_gradient_stops=”#003f86 40%|gcid-a674551e-c023-4666-82b8-b7448e713885 40%|rgba(255,255,255,0) 40%|rgba(255, 255, 255, 0) 54%” background_last_edited=”on|tablet” background_color_gradient_direction_tablet=”180deg” collapsed=”on” global_colors_info=”{%22gcid-a674551e-c023-4666-82b8-b7448e713885%22:%91%22background_color_gradient_stops%22%93}”][et_pb_row column_structure=”1_2,1_2″ _builder_version=”4.25.0″ _module_preset=”default” max_width=”1280px” global_colors_info=”{}”][et_pb_column type=”1_2″ _builder_version=”4.25.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_image src=”https:\/\/www.itech-progress.com\/wp-content\/uploads\/2025\/08\/Julian_in_Signet.jpg” alt=”Portrait of Holger Tiemeyer” title_text=”Julian_in_Signet” _builder_version=”4.27.4″ _module_preset=”default” width=”76%” max_height_tablet=”400px” max_height_phone=”400px” max_height_last_edited=”on|tablet” animation_style=”slide” border_radii=”on|6px|6px|6px|6px” locked=”off” global_colors_info=”{}”][\/et_pb_image][\/et_pb_column][et_pb_column type=”1_2″ _builder_version=”4.25.0″ _module_preset=”default” custom_padding=”60px||60px||true|false” custom_padding_tablet=”0px||0px||true|false” custom_padding_phone=”0px||0px||true|false” custom_padding_last_edited=”on|desktop” global_colors_info=”{}”][et_pb_heading title=”Green Software, Software Architecture, IT Consulting” _builder_version=”4.27.4″ _module_preset=”_initial” title_level=”h6″ title_font=”Poppins|600|||||||” title_font_size=”16px” title_letter_spacing=”-0.03em” title_line_height=”1.4em” custom_margin=”||10px||false|false” animation_style=”fade” title_font_size_tablet=”15px” title_font_size_phone=”14px” title_font_size_last_edited=”on|desktop” locked=”off” global_colors_info=”{}”][\/et_pb_heading][et_pb_heading title=”Julian” _builder_version=”4.27.4″ _module_preset=”_initial” title_font=”Poppins|500|||||||” title_font_size=”72px” title_letter_spacing=”-0.05em” custom_margin=”||10px||false|false” animation_style=”fade” title_font_size_tablet=”40px” title_font_size_phone=”24px” title_font_size_last_edited=”on|desktop” locked=”off” global_colors_info=”{}”][\/et_pb_heading][et_pb_image src=”https:\/\/www.itech-progress.com\/wp-content\/uploads\/2022\/08\/itech-academy_logo_3c-01_new_V2-scaled.jpg” title_text=”itech-academy_logo_3c-01_new_V2″ _builder_version=”4.27.0″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_image][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ admin_label=”Work Experience” _builder_version=”4.27.0″ _module_preset=”default” custom_margin_tablet=”” custom_margin_phone=”-50px||||false|false” custom_margin_last_edited=”on|desktop” custom_padding=”41px||||false|false” locked=”off” collapsed=”on” global_colors_info=”{}”][et_pb_row _builder_version=”4.27.0″ _module_preset=”default” max_width=”1280px” custom_padding=”7px|||||” animation_style=”fade” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.25.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_heading title=”Experience and qualifications” _builder_version=”4.27.0″ _module_preset=”_initial” title_level=”h5″ title_font=”Poppins|600|||||||” title_font_size=”35px” title_letter_spacing=”-0.04em” title_line_height=”1.4em” custom_margin=”||0px||false|false” title_font_size_tablet=”16px” title_font_size_phone=”16px” title_font_size_last_edited=”on|phone” global_colors_info=”{}”][\/et_pb_heading][et_pb_text quote_border_color=”#16264a” _builder_version=”4.27.4″ _module_preset=”_initial” link_font=”||||on||||” link_text_color=”#16264a” quote_font=”Poppins|600|||||||” quote_text_color=”#000000″ quote_font_size=”24px” quote_letter_spacing=”-0.04em” quote_line_height=”1.6em” header_font=”Poppins|500|||||||” header_font_size=”72px” header_letter_spacing=”-0.05em” header_line_height=”1.2em” header_2_font=”Poppins|500|||||||” header_2_font_size=”52px” header_2_letter_spacing=”-0.05em” header_2_line_height=”1.2em” header_3_font=”Poppins|500|||||||” header_3_font_size=”36px” header_3_letter_spacing=”-0.05em” header_3_line_height=”1.2em” header_4_font=”Poppins|600|||||||” header_4_font_size=”24px” header_4_letter_spacing=”-0.04em” header_4_line_height=”1.6em” header_5_font=”Poppins|600|||||||” header_5_font_size=”20px” header_5_letter_spacing=”-0.04em” header_5_line_height=”1.4em” header_6_font=”Poppins|600|||||||” header_6_font_size=”16px” header_6_letter_spacing=”-0.03em” header_6_line_height=”1.4em” text_font_size_tablet=”” text_font_size_phone=”14px” text_font_size_last_edited=”on|desktop” quote_font_size_tablet=”16px” quote_font_size_phone=”15px” quote_font_size_last_edited=”on|desktop” header_font_size_tablet=”40px” header_font_size_phone=”24px” header_font_size_last_edited=”on|desktop” header_2_font_size_tablet=”32px” header_2_font_size_phone=”20px” header_2_font_size_last_edited=”on|desktop” header_3_font_size_tablet=”20px” header_3_font_size_phone=”16px” header_3_font_size_last_edited=”on|desktop” header_4_font_size_tablet=”16px” header_4_font_size_phone=”15px” header_4_font_size_last_edited=”on|desktop” header_5_font_size_tablet=”16px” header_5_font_size_phone=”14px” header_5_font_size_last_edited=”on|desktop” header_6_font_size_tablet=”15px” header_6_font_size_phone=”14px” header_6_font_size_last_edited=”on|desktop” global_colors_info=”{}”]<\/p>\n
Julian is an experienced software architect, consultant, and trainer with extensive expertise in sustainable software development and modern software architectures.<\/p>\n
He is a Green Software Champion of the Green Software Foundation and brings deep knowledge in the design and implementation of resource-efficient software solutions.<\/p>\n
Throughout his career, Julian has been involved in the development and architecture of numerous cloud-native applications in the FinTech sector \u2013 including projects related to payroll systems, the establishment of sustainable IT infrastructures, and the modernization of web applications.<\/span><\/p>\n His core areas include Green Software Engineering, test-driven development, and full-stack technologies such as Java, Spring Boot, Angular, and GraphQL.<\/span><\/p>\n He also has strong expertise in building CI\/CD pipelines, cloud operations (Docker, Kubernetes), and quality assurance using automated testing and code analysis tools.<\/p>\n In addition, Julian teaches at the Baden-W\u00fcrttemberg Cooperative State University (DHBW), where he shares his knowledge in mathematics, application development, and Green IT in a hands-on, practical manner.<\/span><\/p>\n [\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”1_2,1_2″ _builder_version=”4.27.0″ _module_preset=”default” max_width=”1280px” animation_style=”fade” global_colors_info=”{}”][et_pb_column type=”1_2″ _builder_version=”4.25.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_heading title=”Personal Philosophy” _builder_version=”4.27.0″ _module_preset=”_initial” title_level=”h5″ title_font=”Poppins|600|||||||” title_font_size=”35px” title_letter_spacing=”-0.04em” title_line_height=”1.4em” custom_margin=”||0px||false|false” title_font_size_tablet=”16px” title_font_size_phone=”16px” title_font_size_last_edited=”on|phone” global_colors_info=”{}”][\/et_pb_heading][et_pb_text quote_border_color=”#16264a” _builder_version=”4.27.4″ _module_preset=”_initial” link_font=”||||on||||” link_text_color=”#16264a” quote_font=”Poppins|600|||||||” quote_text_color=”#000000″ quote_font_size=”24px” quote_letter_spacing=”-0.04em” quote_line_height=”1.6em” header_font=”Poppins|500|||||||” header_font_size=”72px” header_letter_spacing=”-0.05em” header_line_height=”1.2em” header_2_font=”Poppins|500|||||||” header_2_font_size=”52px” header_2_letter_spacing=”-0.05em” header_2_line_height=”1.2em” header_3_font=”Poppins|500|||||||” header_3_font_size=”36px” header_3_letter_spacing=”-0.05em” header_3_line_height=”1.2em” header_4_font=”Poppins|600|||||||” header_4_font_size=”24px” header_4_letter_spacing=”-0.04em” header_4_line_height=”1.6em” header_5_font=”Poppins|600|||||||” header_5_font_size=”20px” header_5_letter_spacing=”-0.04em” header_5_line_height=”1.4em” header_6_font=”Poppins|600|||||||” header_6_font_size=”16px” header_6_letter_spacing=”-0.03em” header_6_line_height=”1.4em” text_font_size_tablet=”” text_font_size_phone=”14px” text_font_size_last_edited=”on|desktop” quote_font_size_tablet=”16px” quote_font_size_phone=”15px” quote_font_size_last_edited=”on|desktop” header_font_size_tablet=”40px” header_font_size_phone=”24px” header_font_size_last_edited=”on|desktop” header_2_font_size_tablet=”32px” header_2_font_size_phone=”20px” header_2_font_size_last_edited=”on|desktop” header_3_font_size_tablet=”20px” header_3_font_size_phone=”16px” header_3_font_size_last_edited=”on|desktop” header_4_font_size_tablet=”16px” header_4_font_size_phone=”15px” header_4_font_size_last_edited=”on|desktop” header_5_font_size_tablet=”16px” header_5_font_size_phone=”14px” header_5_font_size_last_edited=”on|desktop” header_6_font_size_tablet=”15px” header_6_font_size_phone=”14px” header_6_font_size_last_edited=”on|desktop” global_colors_info=”{}”]<\/p>\n Julian takes a forward-looking approach to software architecture that combines technical excellence with environmental awareness.<\/p>\n For him, good software means not only functional quality but also sustainability, maintainability, and social responsibility.<\/span><\/p>\n He makes deliberate use of agile methods such as TDD, BDD, and mob programming, combined with a clear communication culture and team empathy.<\/span><\/p>\n His goal is to design technical solutions that are not only scalable but also resource-conscious and built for the long term.<\/span><\/p>\n [\/et_pb_text][\/et_pb_column][et_pb_column type=”1_2″ _builder_version=”4.25.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_heading title=”Key Achievements” _builder_version=”4.27.0″ _module_preset=”_initial” title_level=”h5″ title_font=”Poppins|600|||||||” title_font_size=”35px” title_letter_spacing=”-0.04em” title_line_height=”1.4em” custom_margin=”||0px||false|false” title_font_size_tablet=”16px” title_font_size_phone=”16px” title_font_size_last_edited=”on|phone” global_colors_info=”{}”][\/et_pb_heading][et_pb_text quote_border_color=”#16264a” _builder_version=”4.27.4″ _module_preset=”_initial” link_font=”||||on||||” link_text_color=”#16264a” ul_line_height=”1.6em” quote_font=”Poppins|600|||||||” quote_text_color=”#000000″ quote_font_size=”24px” quote_letter_spacing=”-0.04em” quote_line_height=”1.6em” header_font=”Poppins|500|||||||” header_font_size=”72px” header_letter_spacing=”-0.05em” header_line_height=”1.2em” header_2_font=”Poppins|500|||||||” header_2_font_size=”52px” header_2_letter_spacing=”-0.05em” header_2_line_height=”1.2em” header_3_font=”Poppins|500|||||||” header_3_font_size=”36px” header_3_letter_spacing=”-0.05em” header_3_line_height=”1.2em” header_4_font=”Poppins|600|||||||” header_4_font_size=”24px” header_4_letter_spacing=”-0.04em” header_4_line_height=”1.6em” header_5_font=”Poppins|600|||||||” header_5_font_size=”20px” header_5_letter_spacing=”-0.04em” header_5_line_height=”1.4em” header_6_font=”Poppins|600|||||||” header_6_font_size=”16px” header_6_letter_spacing=”-0.03em” header_6_line_height=”1.4em” text_font_size_tablet=”” text_font_size_phone=”14px” text_font_size_last_edited=”on|desktop” quote_font_size_tablet=”16px” quote_font_size_phone=”15px” quote_font_size_last_edited=”on|desktop” header_font_size_tablet=”40px” header_font_size_phone=”24px” header_font_size_last_edited=”on|desktop” header_2_font_size_tablet=”32px” header_2_font_size_phone=”20px” header_2_font_size_last_edited=”on|desktop” header_3_font_size_tablet=”20px” header_3_font_size_phone=”16px” header_3_font_size_last_edited=”on|desktop” header_4_font_size_tablet=”16px” header_4_font_size_phone=”15px” header_4_font_size_last_edited=”on|desktop” header_5_font_size_tablet=”16px” header_5_font_size_phone=”14px” header_5_font_size_last_edited=”on|desktop” header_6_font_size_tablet=”15px” header_6_font_size_phone=”14px” header_6_font_size_last_edited=”on|desktop” global_colors_info=”{}”]<\/p>\n Founded and led an internal Green IT community at DATEV<\/p>\n<\/li>\n Led a research initiative on measuring resource consumption of architecture and coding patterns<\/p>\n<\/li>\n Developed sustainable web applications in the area of HR and payroll<\/p>\n<\/li>\n Migrated legacy applications to modern cloud-native infrastructure<\/p>\n<\/li>\n Advised internal teams on adopting green software practices and energy-efficient API design<\/p>\n<\/li>\n<\/ul>\n [\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”4.27.0″ _module_preset=”default” max_width=”1280px” animation_style=”fade” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.25.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_heading title=”Personal style” _builder_version=”4.27.0″ _module_preset=”_initial” title_level=”h5″ title_font=”Poppins|600|||||||” title_font_size=”35px” title_letter_spacing=”-0.04em” title_line_height=”1.4em” custom_margin=”||0px||false|false” title_font_size_tablet=”16px” title_font_size_phone=”16px” title_font_size_last_edited=”on|phone” global_colors_info=”{}”][\/et_pb_heading][et_pb_text quote_border_color=”#16264a” _builder_version=”4.27.4″ _module_preset=”_initial” link_font=”||||on||||” link_text_color=”#16264a” quote_font=”Poppins|600|||||||” quote_text_color=”#000000″ quote_font_size=”24px” quote_letter_spacing=”-0.04em” quote_line_height=”1.6em” header_font=”Poppins|500|||||||” header_font_size=”72px” header_letter_spacing=”-0.05em” header_line_height=”1.2em” header_2_font=”Poppins|500|||||||” header_2_font_size=”52px” header_2_letter_spacing=”-0.05em” header_2_line_height=”1.2em” header_3_font=”Poppins|500|||||||” header_3_font_size=”36px” header_3_letter_spacing=”-0.05em” header_3_line_height=”1.2em” header_4_font=”Poppins|600|||||||” header_4_font_size=”24px” header_4_letter_spacing=”-0.04em” header_4_line_height=”1.6em” header_5_font=”Poppins|600|||||||” header_5_font_size=”20px” header_5_letter_spacing=”-0.04em” header_5_line_height=”1.4em” header_6_font=”Poppins|600|||||||” header_6_font_size=”16px” header_6_letter_spacing=”-0.03em” header_6_line_height=”1.4em” text_font_size_tablet=”” text_font_size_phone=”14px” text_font_size_last_edited=”on|desktop” quote_font_size_tablet=”16px” quote_font_size_phone=”15px” quote_font_size_last_edited=”on|desktop” header_font_size_tablet=”40px” header_font_size_phone=”24px” header_font_size_last_edited=”on|desktop” header_2_font_size_tablet=”32px” header_2_font_size_phone=”20px” header_2_font_size_last_edited=”on|desktop” header_3_font_size_tablet=”20px” header_3_font_size_phone=”16px” header_3_font_size_last_edited=”on|desktop” header_4_font_size_tablet=”16px” header_4_font_size_phone=”15px” header_4_font_size_last_edited=”on|desktop” header_5_font_size_tablet=”16px” header_5_font_size_phone=”14px” header_5_font_size_last_edited=”on|desktop” header_6_font_size_tablet=”15px” header_6_font_size_phone=”14px” header_6_font_size_last_edited=”on|desktop” global_colors_info=”{}”]<\/p>\n Julian is known for his structured and scientifically grounded working style.<\/p>\n He combines analytical thinking with practical implementation and has a talent for inspiring teams around technical excellence and sustainable software development.<\/span><\/p>\n His leadership style is characterized by openness, transparency, and trust in his colleagues’ self-responsibility.<\/p>\n Julian fosters a learning environment where continuous improvement, constructive feedback, and deep technical expertise are actively encouraged.<\/span><\/p>\n [\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row disabled_on=”off|off|off” _builder_version=”4.27.4″ _module_preset=”default” max_width=”1280px” custom_padding=”||2px|||” animation_style=”fade” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.25.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_heading title=”Accredited Trainer for:” _builder_version=”4.27.4″ _module_preset=”_initial” title_level=”h5″ title_font=”Poppins|600|||||||” title_font_size=”35px” title_letter_spacing=”-0.04em” title_line_height=”1.4em” custom_margin=”||0px||false|false” title_font_size_tablet=”16px” title_font_size_phone=”16px” title_font_size_last_edited=”on|phone” global_colors_info=”{}”][\/et_pb_heading][et_pb_text quote_border_color=”#16264a” _builder_version=”4.27.6″ _module_preset=”_initial” link_font=”||||on||||” link_text_color=”#16264a” quote_font=”Poppins|600|||||||” quote_text_color=”#000000″ quote_font_size=”24px” quote_letter_spacing=”-0.04em” quote_line_height=”1.6em” header_font=”Poppins|500|||||||” header_font_size=”72px” header_letter_spacing=”-0.05em” header_line_height=”1.2em” header_2_font=”Poppins|500|||||||” header_2_font_size=”52px” header_2_letter_spacing=”-0.05em” header_2_line_height=”1.2em” header_3_font=”Poppins|500|||||||” header_3_font_size=”36px” header_3_letter_spacing=”-0.05em” header_3_line_height=”1.2em” header_4_font=”Poppins|600|||||||” header_4_font_size=”24px” header_4_letter_spacing=”-0.04em” header_4_line_height=”1.6em” header_5_font=”Poppins|600|||||||” header_5_font_size=”20px” header_5_letter_spacing=”-0.04em” header_5_line_height=”1.4em” header_6_font=”Poppins|600|||||||” header_6_font_size=”16px” header_6_letter_spacing=”-0.03em” header_6_line_height=”1.4em” hover_enabled=”0″ text_font_size_tablet=”” text_font_size_phone=”14px” text_font_size_last_edited=”on|desktop” quote_font_size_tablet=”16px” quote_font_size_phone=”15px” quote_font_size_last_edited=”on|desktop” header_font_size_tablet=”40px” header_font_size_phone=”24px” header_font_size_last_edited=”on|desktop” header_2_font_size_tablet=”32px” header_2_font_size_phone=”20px” header_2_font_size_last_edited=”on|desktop” header_3_font_size_tablet=”20px” header_3_font_size_phone=”16px” header_3_font_size_last_edited=”on|desktop” header_4_font_size_tablet=”16px” header_4_font_size_phone=”15px” header_4_font_size_last_edited=”on|desktop” header_5_font_size_tablet=”16px” header_5_font_size_phone=”14px” header_5_font_size_last_edited=”on|desktop” header_6_font_size_tablet=”15px” header_6_font_size_phone=”14px” header_6_font_size_last_edited=”on|desktop” global_colors_info=”{}” sticky_enabled=”0″]<\/p>\n \ud83d\udcdc\u00a0<\/span>ISAQB\u00ae CPSA Foundation Level (CPSA-F)<\/a><\/p>\n \ud83d\udcdc<\/span>\u00a0<\/span>ISAQB\u00ae CPSA Advanced Level \u2013 Modul ADOC<\/a><\/p>\n \ud83d\udcdc iSAQB\u00ae CPSA Advanced Level \u2013 Module GREEN<\/a><\/p>\n \ud83d\udcdc\u00a0<\/span>Extended Level \u2013 AI4SWARC<\/a><\/p>\n \ud83d\udcdc\u00a0<\/span>Extended Level \u2013 AI Agents for Architects<\/a><\/p>\n [\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row disabled_on=”off|off|off” _builder_version=”4.27.4″ _module_preset=”default” max_width=”1280px” custom_padding=”||2px|||” animation_style=”fade” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.25.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_heading title=”Certifications:” _builder_version=”4.27.4″ _module_preset=”_initial” title_level=”h5″ title_font=”Poppins|600|||||||” title_font_size=”35px” title_letter_spacing=”-0.04em” title_line_height=”1.4em” custom_margin=”||0px||false|false” title_font_size_tablet=”16px” title_font_size_phone=”16px” title_font_size_last_edited=”on|phone” global_colors_info=”{}”][\/et_pb_heading][et_pb_text quote_border_color=”#16264a” _builder_version=”4.27.6″ _module_preset=”_initial” link_font=”||||on||||” link_text_color=”#16264a” quote_font=”Poppins|600|||||||” quote_text_color=”#000000″ quote_font_size=”24px” quote_letter_spacing=”-0.04em” quote_line_height=”1.6em” header_font=”Poppins|500|||||||” header_font_size=”72px” header_letter_spacing=”-0.05em” header_line_height=”1.2em” header_2_font=”Poppins|500|||||||” header_2_font_size=”52px” header_2_letter_spacing=”-0.05em” header_2_line_height=”1.2em” header_3_font=”Poppins|500|||||||” header_3_font_size=”36px” header_3_letter_spacing=”-0.05em” header_3_line_height=”1.2em” header_4_font=”Poppins|600|||||||” header_4_font_size=”24px” header_4_letter_spacing=”-0.04em” header_4_line_height=”1.6em” header_5_font=”Poppins|600|||||||” header_5_font_size=”20px” header_5_letter_spacing=”-0.04em” header_5_line_height=”1.4em” header_6_font=”Poppins|600|||||||” header_6_font_size=”16px” header_6_letter_spacing=”-0.03em” header_6_line_height=”1.4em” hover_enabled=”0″ text_font_size_tablet=”” text_font_size_phone=”14px” text_font_size_last_edited=”on|desktop” quote_font_size_tablet=”16px” quote_font_size_phone=”15px” quote_font_size_last_edited=”on|desktop” header_font_size_tablet=”40px” header_font_size_phone=”24px” header_font_size_last_edited=”on|desktop” header_2_font_size_tablet=”32px” header_2_font_size_phone=”20px” header_2_font_size_last_edited=”on|desktop” header_3_font_size_tablet=”20px” header_3_font_size_phone=”16px” header_3_font_size_last_edited=”on|desktop” header_4_font_size_tablet=”16px” header_4_font_size_phone=”15px” header_4_font_size_last_edited=”on|desktop” header_5_font_size_tablet=”16px” header_5_font_size_phone=”14px” header_5_font_size_last_edited=”on|desktop” header_6_font_size_tablet=”15px” header_6_font_size_phone=”14px” header_6_font_size_last_edited=”on|desktop” global_colors_info=”{}” sticky_enabled=”0″]<\/p>\n \ud83d\udcdc Green Software Champion der Green Software Foundation<\/a><\/p>\n \ud83d\udcdc iSAQB\u00ae CPSA Foundation Level (CPSA-F)<\/a><\/p>\n\n