kivitendo/kivitendo-erp
Dec 2023 – Jul 2026
20 Months active
Languages Used
PerlHTMLJavaScriptUnknownPHPSQLTextCSS
Technical Skills
Perlback end developmentAJAXBackend DevelopmentData ValidationERP Systems
Bernd Bleßmann
PROFILE
Bernd Bleßmann
Over 20 months, this developer delivered robust features and reliability improvements to the kivitendo/kivitendo-erp repository, focusing on ERP workflows such as inventory management, reporting, and financial processes. They engineered solutions using Perl, JavaScript, and SQL, implementing enhancements like CSV import/export, multilingual support, and secure authentication. Their work emphasized data integrity, UI consistency, and maintainability, addressing both backend and frontend challenges. Through targeted bug fixes, code refactoring, and comprehensive test coverage, they improved business-critical modules including payment approvals, SEPA compliance, and warehouse reporting. Their technical approach balanced new feature delivery with ongoing stability, documentation, and upgrade readiness across releases.
Overall Statistics
Feature vs Bugs
60%Features
Repository Contributions
265Total
Bugs
58
Commits
265
Features
87
Lines of code
6,518
Activity Months20
Your Network
21 peopleShared Repositories
21
Work History
July 2026
11 Commits • 6 Features
Jul 1, 2026July 2026 monthly summary for kivitendo-erp focused on delivering core pricing, payment, and SEPA workflow improvements, alongside data integrity and UI enhancements. Key features delivered and bugs fixed improved business value by simplifying pricing flows, strengthening payment governance, and enhancing localization and user experience across accounts payable, vendor invoices, and customer communications.
11 Commits • 6 Features
Jul 1, 2026July 2026 monthly summary for kivitendo-erp focused on delivering core pricing, payment, and SEPA workflow improvements, alongside data integrity and UI enhancements. Key features delivered and bugs fixed improved business value by simplifying pricing flows, strengthening payment governance, and enhancing localization and user experience across accounts payable, vendor invoices, and customer communications.
July 2026
June 2026
28 Commits • 7 Features
Jun 1, 2026June 2026 performance summary for kivitendo/kivitendo-erp: Focused on stability of data paths, UI polish, security hardening, and testing resilience to deliver business value with minimal risk during upgrades. Key features delivered include UI and format improvements (ZUGFeRD cosmetics and start/end tags comments), title handling improvements (Belegnummer in Titlezeile anzeigen), and a UI refresh (Design 4.0 CSS recompiled) along with E-Mail-Journal layout improvements. Major bugs fixed addressed critical upgrade data path (InstanceState SQL query fix), upgrade syntax correctness, and robustness in data handling before save (DeliveryOrder base_qty guard). Security hardening includes escaping units in HTML templates to prevent XSS. Testing and maintainability gains come from improved unit tests (Bank Account) and a set of Zwischeninventur/Abgleich fixes to ensure reliable inventory workflows. The work demonstrates strong SQL and DB migration discipline, UI consistency, and proactive quality assurance.
June 2026
28 Commits • 7 Features
Jun 1, 2026June 2026 performance summary for kivitendo/kivitendo-erp: Focused on stability of data paths, UI polish, security hardening, and testing resilience to deliver business value with minimal risk during upgrades. Key features delivered include UI and format improvements (ZUGFeRD cosmetics and start/end tags comments), title handling improvements (Belegnummer in Titlezeile anzeigen), and a UI refresh (Design 4.0 CSS recompiled) along with E-Mail-Journal layout improvements. Major bugs fixed addressed critical upgrade data path (InstanceState SQL query fix), upgrade syntax correctness, and robustness in data handling before save (DeliveryOrder base_qty guard). Security hardening includes escaping units in HTML templates to prevent XSS. Testing and maintainability gains come from improved unit tests (Bank Account) and a set of Zwischeninventur/Abgleich fixes to ensure reliable inventory workflows. The work demonstrates strong SQL and DB migration discipline, UI consistency, and proactive quality assurance.
May 2026
21 Commits • 4 Features
May 1, 2026May 2026 performance summary for kivitendo/kivitendo-erp focused on delivering business value through UI consistency, data integrity, and reliability improvements, while strengthening upgrade readiness and test coverage. Key contributions include frontend polish and build pipeline improvements, data-model enhancements for pricing history, robust content handling, and critical DB migration work that reduces risk in future releases.
21 Commits • 4 Features
May 1, 2026May 2026 performance summary for kivitendo/kivitendo-erp focused on delivering business value through UI consistency, data integrity, and reliability improvements, while strengthening upgrade readiness and test coverage. Key contributions include frontend polish and build pipeline improvements, data-model enhancements for pricing history, robust content handling, and critical DB migration work that reduces risk in future releases.
May 2026
April 2026
19 Commits • 5 Features
Apr 1, 2026April 2026: Delivered measurable business value by stabilizing core reporting, enhancing data exchange, and improving UI reliability across key ERP modules. Focused on data integrity, maintainability, and enabling better decision-making through cleaner exports, robust error handling, and more accurate date/time processing in orders.
April 2026
19 Commits • 5 Features
Apr 1, 2026April 2026: Delivered measurable business value by stabilizing core reporting, enhancing data exchange, and improving UI reliability across key ERP modules. Focused on data integrity, maintainability, and enabling better decision-making through cleaner exports, robust error handling, and more accurate date/time processing in orders.
March 2026
6 Commits • 2 Features
Mar 1, 2026Summary for 2026-03 (kivitendo/kivitendo-erp): Delivered key enhancements and fixes that improve data integrity, reporting capabilities, and user-facing reliability. Key features delivered include CSV export for orders, enabling reporting and data sharing; improved form submission for checkboxes via for_submit handling and default values; and a refactor-safe fix for position renumbering consistency across order and delivery note code. These changes enhance business visibility, enable exporters for operational reporting, and reduce data inconsistencies across core documents.
6 Commits • 2 Features
Mar 1, 2026Summary for 2026-03 (kivitendo/kivitendo-erp): Delivered key enhancements and fixes that improve data integrity, reporting capabilities, and user-facing reliability. Key features delivered include CSV export for orders, enabling reporting and data sharing; improved form submission for checkboxes via for_submit handling and default values; and a refactor-safe fix for position renumbering consistency across order and delivery note code. These changes enhance business visibility, enable exporters for operational reporting, and reduce data inconsistencies across core documents.
March 2026
February 2026
21 Commits • 4 Features
Feb 1, 2026February 2026 focused on delivering business value through pricing accuracy, data integrity, and compliance readiness. Key work spanned pricing for additional items, ZUGFeRD improvements, localization updates, supplier verification in the order workflow, and UI/data integrity fixes, along with consolidation of document handling and targeted code quality improvements.
February 2026
21 Commits • 4 Features
Feb 1, 2026February 2026 focused on delivering business value through pricing accuracy, data integrity, and compliance readiness. Key work spanned pricing for additional items, ZUGFeRD improvements, localization updates, supplier verification in the order workflow, and UI/data integrity fixes, along with consolidation of document handling and targeted code quality improvements.
January 2026
1 Commits
Jan 1, 2026January 2026 monthly summary for kivitendo/kivitendo-erp focused on robustness and business value in critical financial workflows. Delivered targeted fix to handle missing tax data in the supplier order to creditor booking path, improving error handling, stability, and overall process reliability. This reduced risk of runtime errors in payment workflows and supported smoother supplier payments and compliance-ready bookings.
1 Commits
Jan 1, 2026January 2026 monthly summary for kivitendo/kivitendo-erp focused on robustness and business value in critical financial workflows. Delivered targeted fix to handle missing tax data in the supplier order to creditor booking path, improving error handling, stability, and overall process reliability. This reduced risk of runtime errors in payment workflows and supported smoother supplier payments and compliance-ready bookings.
January 2026
December 2025
3 Commits • 2 Features
Dec 1, 2025Dec 2025 monthly summary focusing on delivering reliable test infrastructure and clearer tax logic for kivitendo-erp, with concrete hygiene improvements that reduce risk and improve maintainability.
December 2025
3 Commits • 2 Features
Dec 1, 2025Dec 2025 monthly summary focusing on delivering reliable test infrastructure and clearer tax logic for kivitendo-erp, with concrete hygiene improvements that reduce risk and improve maintainability.
November 2025
33 Commits • 18 Features
Nov 1, 2025November 2025 summary for kivitendo/kivitendo-erp: Focused on data integrity, reporting clarity, and stable release readiness. Implemented robust error handling, improved reporting fields, and enhanced UI/configurability. Strengthened security and documentation, and expanded upgrade paths with CryptX integration and 4.0.0 release prep. Key work spanned CSV import reliability, EK/VK invoice reporting enhancements, discount carryover in quotes/offers, task-list UI/UX/config improvements, and security/quality hardening.
33 Commits • 18 Features
Nov 1, 2025November 2025 summary for kivitendo/kivitendo-erp: Focused on data integrity, reporting clarity, and stable release readiness. Implemented robust error handling, improved reporting fields, and enhanced UI/configurability. Strengthened security and documentation, and expanded upgrade paths with CryptX integration and 4.0.0 release prep. Key work spanned CSV import reliability, EK/VK invoice reporting enhancements, discount carryover in quotes/offers, task-list UI/UX/config improvements, and security/quality hardening.
November 2025
October 2025
5 Commits • 2 Features
Oct 1, 2025Month: 2025-10. Focused on stabilizing pricing data handling in Reclamation flows, improving Reclamation controller maintainability, and strengthening warehouse reporting. Delivered three changes across kivitendo/kivitendo-erp with targeted bug fixes and non-functional improvements that reduce data risk and improve report robustness.
October 2025
5 Commits • 2 Features
Oct 1, 2025Month: 2025-10. Focused on stabilizing pricing data handling in Reclamation flows, improving Reclamation controller maintainability, and strengthening warehouse reporting. Delivered three changes across kivitendo/kivitendo-erp with targeted bug fixes and non-functional improvements that reduce data risk and improve report robustness.
September 2025
19 Commits • 4 Features
Sep 1, 2025Concise monthly summary for 2025-09 focusing on business value and technical achievements across kivitendo/kivitendo-erp. Highlights include SEPA compliance guardrails for non-Euro invoices, enhanced delivery planning visibility and sorting, performance and UI improvements in warehouse journal reporting, and improved inventory valuation accuracy with clearer error messaging. These changes reduce risk, improve decision throughput, and improve data quality in financial and logistics workflows.
19 Commits • 4 Features
Sep 1, 2025Concise monthly summary for 2025-09 focusing on business value and technical achievements across kivitendo/kivitendo-erp. Highlights include SEPA compliance guardrails for non-Euro invoices, enhanced delivery planning visibility and sorting, performance and UI improvements in warehouse journal reporting, and improved inventory valuation accuracy with clearer error messaging. These changes reduce risk, improve decision throughput, and improve data quality in financial and logistics workflows.
September 2025
August 2025
24 Commits • 6 Features
Aug 1, 2025August 2025 monthly summary for the repository kivitendo/kivitendo-erp. Delivered targeted features and reliability improvements across printing workflows, search, and billing reports, while strengthening test coverage and localization. Key business value includes streamlined DeliveryOrder printing with fewer client-side dependencies, correct Belege CVars filtering, stable Volltext search for Lieferschein, enhanced Mahnungsbericht presentation, and corrected Umlagerungen display and sorting. Additionally, template cleanup and unit-test hygiene reduced maintenance cost and improved future scalability. Demonstrated skills in Perl backend work, SQL query tuning, frontend formatting, localization, and automated testing.
August 2025
24 Commits • 6 Features
Aug 1, 2025August 2025 monthly summary for the repository kivitendo/kivitendo-erp. Delivered targeted features and reliability improvements across printing workflows, search, and billing reports, while strengthening test coverage and localization. Key business value includes streamlined DeliveryOrder printing with fewer client-side dependencies, correct Belege CVars filtering, stable Volltext search for Lieferschein, enhanced Mahnungsbericht presentation, and corrected Umlagerungen display and sorting. Additionally, template cleanup and unit-test hygiene reduced maintenance cost and improved future scalability. Demonstrated skills in Perl backend work, SQL query tuning, frontend formatting, localization, and automated testing.
July 2025
9 Commits • 2 Features
Jul 1, 2025July 2025 monthly summary for kivitendo/kivitendo-erp: Delivered notable improvements in ZUGFeRD exports and delivery note printing that advance compliance, reliability, and user experience. Localization and validation enhancements for ZUGFeRD exports reduce data-entry errors and improve German-language usability, while robustness fixes guard against runtime warnings in PDF processing. Delivery notes printing now supports item-level selection and explicit item positions with updated HTML/LaTeX templates, providing clearer printouts and better traceability. Overall, these changes improve business value by reducing manual corrections, increasing accuracy in compliant documents, and easing end-user workflows.
9 Commits • 2 Features
Jul 1, 2025July 2025 monthly summary for kivitendo/kivitendo-erp: Delivered notable improvements in ZUGFeRD exports and delivery note printing that advance compliance, reliability, and user experience. Localization and validation enhancements for ZUGFeRD exports reduce data-entry errors and improve German-language usability, while robustness fixes guard against runtime warnings in PDF processing. Delivery notes printing now supports item-level selection and explicit item positions with updated HTML/LaTeX templates, providing clearer printouts and better traceability. Overall, these changes improve business value by reducing manual corrections, increasing accuracy in compliant documents, and easing end-user workflows.
July 2025
May 2025
12 Commits • 5 Features
May 1, 2025Concise monthly summary for 2025-05 focused on delivering business value through reliable data import, security/documentation improvements, and localization enhancements. The month emphasizes technical achievements that reduce manual work, improve data integrity, and accelerate developer onboarding, while laying groundwork for a stable release cycle.
May 2025
12 Commits • 5 Features
May 1, 2025Concise monthly summary for 2025-05 focused on delivering business value through reliable data import, security/documentation improvements, and localization enhancements. The month emphasizes technical achievements that reduce manual work, improve data integrity, and accelerate developer onboarding, while laying groundwork for a stable release cycle.
April 2025
16 Commits • 4 Features
Apr 1, 2025April 2025 focused on data quality, usability, and security improvements in kivitendo/kivitendo-erp. Delivered multilingual part texts retrieval, master data pricing integration for DeliveryOrder and Reclamations, and Delivery Order UI enhancements, alongside a security/authentication overhaul. Key bug fixes included a reclamation item IDs form variable typo and Delivery Order stock transfer logic corrections. Added test coverage and code quality improvements to support maintainability and reliability. The work enhances pricing accuracy, multilingual data consistency, user experience in delivery workflows, and security posture across the platform.
16 Commits • 4 Features
Apr 1, 2025April 2025 focused on data quality, usability, and security improvements in kivitendo/kivitendo-erp. Delivered multilingual part texts retrieval, master data pricing integration for DeliveryOrder and Reclamations, and Delivery Order UI enhancements, alongside a security/authentication overhaul. Key bug fixes included a reclamation item IDs form variable typo and Delivery Order stock transfer logic corrections. Added test coverage and code quality improvements to support maintainability and reliability. The work enhances pricing accuracy, multilingual data consistency, user experience in delivery workflows, and security posture across the platform.
April 2025
March 2025
6 Commits • 2 Features
Mar 1, 2025March 2025 monthly summary for kivitendo/kivitendo-erp: Delivered two new features enhancing data integrity and multilingual support, and fixed localization and UI issues to improve user experience. Key impact: higher import reliability for multiplex CSVs, accurate multi-language order item translations, corrected reclamation form logic, and polished localization across templates and translations.
March 2025
6 Commits • 2 Features
Mar 1, 2025March 2025 monthly summary for kivitendo/kivitendo-erp: Delivered two new features enhancing data integrity and multilingual support, and fixed localization and UI issues to improve user experience. Key impact: higher import reliability for multiplex CSVs, accurate multi-language order item translations, corrected reclamation form logic, and polished localization across templates and translations.
September 2024
2 Commits • 1 Features
Sep 1, 2024Month: 2024-09. This period focused on delivering UI enhancements for warehouse and bin selection in kivitendo-erp, paired with a dedicated test-page workflow to validate pre-filled defaults, submission behavior, and result visibility. The changes improve data entry efficiency, reduce user errors, and enhance UI component testing visibility. No critical bugs were reported this month; work centered on feature delivery and testability, with commits traceable to the described changes.
2 Commits • 1 Features
Sep 1, 2024Month: 2024-09. This period focused on delivering UI enhancements for warehouse and bin selection in kivitendo-erp, paired with a dedicated test-page workflow to validate pre-filled defaults, submission behavior, and result visibility. The changes improve data entry efficiency, reduce user errors, and enhance UI component testing visibility. No critical bugs were reported this month; work centered on feature delivery and testability, with commits traceable to the described changes.
September 2024
August 2024
24 Commits • 11 Features
Aug 1, 2024Month 2024-08: Delivered a set of inventory counting and stock reconciliation improvements in kivitendo-erp, focusing on mobile-friendly workflows, robust reporting, and reliable data handling. Key features include a comprehensive Zwischeninventur-UI and Abgleich workflow with mobile entry, a MaterialComponents-based bin selector for mobile and Material design, backend reporting enhancements for counts and item relations, improved Lagerplatz rendering and loading behavior, and targeted bug fixes to improve consistency and reliability. These changes drive faster, more accurate cycle counting, clearer reconciliation status, and better visibility into inventory health, while showcasing strong frontend and backend craftsmanship and translations.
August 2024
24 Commits • 11 Features
Aug 1, 2024Month 2024-08: Delivered a set of inventory counting and stock reconciliation improvements in kivitendo-erp, focusing on mobile-friendly workflows, robust reporting, and reliable data handling. Key features include a comprehensive Zwischeninventur-UI and Abgleich workflow with mobile entry, a MaterialComponents-based bin selector for mobile and Material design, backend reporting enhancements for counts and item relations, improved Lagerplatz rendering and loading behavior, and targeted bug fixes to improve consistency and reliability. These changes drive faster, more accurate cycle counting, clearer reconciliation status, and better visibility into inventory health, while showcasing strong frontend and backend craftsmanship and translations.
July 2024
4 Commits • 1 Features
Jul 1, 2024July 2024 monthly summary for kivitendo/kivitendo-erp focused on delivering the Stock Counting (intermediate inventory) feature. Implemented a full persistence layer, UI components, system integration, and data validation to enable tracking and managing intermediate stock counts. The work establishes the foundation for accurate inventory control across warehouses and supports auditability and streamlined counting workflows.
4 Commits • 1 Features
Jul 1, 2024July 2024 monthly summary for kivitendo/kivitendo-erp focused on delivering the Stock Counting (intermediate inventory) feature. Implemented a full persistence layer, UI components, system integration, and data validation to enable tracking and managing intermediate stock counts. The work establishes the foundation for accurate inventory control across warehouses and supports auditability and streamlined counting workflows.
July 2024
December 2023
1 Commits • 1 Features
Dec 1, 2023Month 2023-12 summary for repository: kivitendo/kivitendo-erp. Focused on enhancing Accounts Payable reporting by introducing a dedicated Project Descriptions column in the AP transactions report, enabling better data analysis and project-level spend visibility. No major bugs fixed this month; primary emphasis on delivering business value through improved reporting and data clarity, with groundwork laid for future reliability and feature expansions.
December 2023
1 Commits • 1 Features
Dec 1, 2023Month 2023-12 summary for repository: kivitendo/kivitendo-erp. Focused on enhancing Accounts Payable reporting by introducing a dedicated Project Descriptions column in the AP transactions report, enabling better data analysis and project-level spend visibility. No major bugs fixed this month; primary emphasis on delivering business value through improved reporting and data clarity, with groundwork laid for future reliability and feature expansions.
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Quality Metrics
Correctness95.4%
Maintainability93.6%
Architecture90.4%
Performance91.4%
AI Usage32.8%
Skills & Technologies
Programming Languages
CSSHTMLJavaScriptLESSLaTeXMarkdownNonePHPPerlSQL
Technical Skills
AJAXAPI IntegrationAccess ControlAuthenticationBackend DevelopmentBug FixBug FixingCSSCSV ProcessingCSV handlingCode CleanupCode FormattingCode OrganizationCode RefactoringCode Refinement
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline